CALGreen · California Green Building Standards Code (CALGreen)

What HVAC efficiency and chiller performance rules apply?

CALGreen requires manufacturers to certify that space‑conditioning equipment meets the efficiency numbers and test methods listed in **§ A6.207.1** and its tables; for chillers check the appropriate water‑chilling table (and use Tables A6.207.1‑G/H or the adjustment formula when conditions aren’t standard).

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

Manufacturers must certify that any space‑conditioning equipment installed meets the efficiency and test‑procedure requirements in § A6.207.1 of CALGreen, including the numeric minimums in the tables (unitary equipment and water‑chilling packages) and any applicable test methods (AHRI, ISO, ANSI) listed in those tables. Chiller performance for water‑chilling packages is controlled by the chiller tables (including nonstandard‑condition adjustments) — see Tables A6.207.1‑G and A6.207.1‑H for open cooling‑tower efficiencies and COP requirements for nonstandard centrifugal chillers.

The single most important rule: equipment may only be installed if the manufacturer certifies it complies with the applicable A6.207.1 efficiency table entries and test procedures.

Requirements in detail

Manufacturer certification and scope

  • The manufacturer must certify compliance for any listed space‑conditioning equipment before installation (§ A6.207.1). Key compliance points are efficiency value, applicable test method, and meeting multiple standards when a table lists more than one. § A6.207.1 also explains how capacities used for ratings are determined (maximum/minimum rated capacity per controls during steady state).

Which tables apply

  • Equipment must meet the numeric minimums in the applicable A6.207.1 tables (A through M). For chillers, consult the water‑chilling package table(s) and the nonstandard‑condition adjustment tables: Tables A6.207.1‑D, A6.207.1‑G, and A6.207.1‑H as applicable.

Key chiller performance metrics and test procedures

  • Defined performance metrics you will see in the tables:
    • COP (coefficient of performance) — full‑load efficiency in W/W or unitless ratio (used extensively in A6.207.1 chiller tables).
    • IPLV / NPLV — part‑load integrated performance metrics required for many chillers.
    • Test procedures referenced include AHRI 550/590, AHRI 560, ISO‑13256, and applicable ANSI standards — follow the test procedure column for the specific row.

Decision‑relevant summary table

Decision dimension Typical values / thresholds you must check When it matters Code reference
Manufacturer certification required “Manufacturer has certified compliance” Any listed space‑conditioning equipment before installation § A6.207.1
Water‑cooled centrifugal chillers (standard ARI 550 conditions) COP and IPLV minima (example: <150 ton centrifugal COP 5.00 / IPLV 5.25) Selecting chilled‑water centrifugal chillers Table A6.207.1‑D
Nonstandard centrifugal chillers (<150 tons) Required COP varies with leaving chilled water temp, entering condenser water temp, and condenser flow (gpm/ton) Chillers not designed for ARI 550 full‑load conditions; use Table A6.207.1‑H to pick required COP Table A6.207.1‑H
Open cooling tower efficiency Minimum GPM/HP values by climate zone; Table A6.207.1‑G lists open‑tower efficiencies (not applicable to closed‑circuit towers) Selecting cooling towers that serve chillers Table A6.207.1‑G (open towers)
Adjustment for nonstandard ARI conditions Kadj and COPadj equations for adjusting full‑load/NPLV when chiller not designed for ARI 550 test conditions When site conditions (leaving chilled water temp, entering condenser temp, condenser flow) differ from ARI 550 Exception text and adjustment equations

How to read the chiller tables (practical notes)

  • First identify the equipment Type (air‑cooled vs water‑cooled; centrifugal vs positive‑displacement) and Size category (tons). Then read the row for the required metric (COP at full load and/or IPLV). Test method column tells which AHRI/ISO/ANSI procedure to use to verify the number.
  • If the chiller is not designed for ARI 550 test conditions, use the nonstandard‑condition table (A6.207.1‑H) or Kadj/COPadj formula in the exception to compute the required adjusted metric.

Exceptions & special cases

  • Exception for chillers not designed for ARI 550 test conditions: those water‑cooled centrifugal packages must meet the minimum full‑load COP values in Tables A6.207.1‑H / I / J and NPLV values in Tables A6.207.1‑K / L / M, but only across the listed design ranges (leaving chilled water 40–48°F, entering condenser water 75–85°F, condensing water rise 5–15°F). See the exception language under § A6.207.1.1.
  • For centrifugal chillers installed outside standard ARI conditions, the code provides an adjustment factor (Kadj) equation to compute an adjusted COP (COPadj = Kadj × COPstd) so the Table values can be applied to nonstandard operating points — see the Kadj formula and variable definitions.
  • Open‑circuit cooling tower efficiency requirements in Table A6.207.1‑G explicitly do not apply to closed‑circuit cooling towers. Check the Table notes.

Common mistakes

  • Assuming the federal or Title 20 directory number alone proves CALGreen compliance — you must confirm the manufacturer’s certification to the CALGreen table entries as required by § A6.207.1.
  • Reading only full‑load COP and ignoring IPLV/NPLV (part‑load) metrics — many chiller rows require both full‑load and IPLV to be met. Always check both columns.
  • Applying standard ARI table numbers when the chiller is not tested at ARI 550 conditions — use Table A6.207.1‑H or the Kadj/COPadj method for nonstandard conditions.
  • Using open‑tower efficiencies for closed‑circuit towers. Table G’s values are not applicable to closed‑circuit towers; verify which tower type your project uses.

Worked example — concrete scenario

Scenario: You plan to install a water‑cooled centrifugal chiller sized at 120 tons. Design conditions: leaving chilled water 44°F, entering condenser water 75°F, and condenser flow 3 gpm/ton. The chiller is not tested at standard ARI 550 conditions.

Step 1 — Identify the applicable table: chiller <150 tons and nonstandard conditions → use Table A6.207.1‑H.
Step 2 — Read the required COP for your combination: Table A6.207.1‑H lists required COP values by leaving chilled water temp, entering condenser water temp (which determines LIFT), and condenser flow. For the row for 44°F leaving and 75°F entering (LIFT ~31°F) the table shows a required COP for 3 gpm/ton of approximately 5.82. Use that COP as the full‑load minimum the manufacturer must certify.
Step 3 — Confirm test method and part‑load metrics: verify the table row’s test procedure (usually AHRI 550/590) and whether an IPLV/NPLV value is also required by the applicable path/table. If the table or path requires an IPLV too, ensure the unit meets that.

(Notes: the numeric COP above is taken directly from Table A6.207.1‑H; always confirm the exact table row for your leaving/entering temps and condenser flow rate.)

Related provisions

  • § A6.207.1 — Space‑conditioning equipment certification and efficiency (manufacturer certification and table applicability).
  • Table A6.207.1‑D — Water chilling packages — minimum efficiency requirements (examples and baseline COP/IPLV entries).
  • Table A6.207.1‑G — Open cooling tower efficiencies (minimum GPM/HP by climate zone; not for closed‑circuit towers).
  • Table A6.207.1‑H — COPs for nonstandard centrifugal chillers (detailed COP by leaving/entering temps and condenser flow).
  • Adjustment formula and exception text for chillers not designed for ARI 550 test conditions (Kadj / COPadj equations).

Code references

Grounded in the retrieved California Green Building Standards Code (CALGreen) — click a citation to read the verbatim passage:

  • CALGreen § 110.2 High relevance — show source text

    Water-to-water heat pumps with a capacity less than 135,000 Btu/h are included in Table 110.2-B, Heat Pumps—Minimum Efficiency Requirements.
    i. Source leaving liquid temperature.
    1. The cooling evaporator liquid flow rate used for the heating rating for a reverse cycle air-to-water heat pump shall be the flow rate determined during the full load cooling rating.
    2. The cooling evaporator liquid flow rate for the simultaneous cooling and heating and heat recovery liquid cooled chilling packages rating shall be the liquid flow rates
    from the cooling operation full-load rating.
    3. For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|a. The size category is the full-load net refrigeration cooling mode capacity, which is the capacity of the evaporator available for cooling of the thermal load external to the chill-
    ing package.
    b. For air source heat pumps, compliance with both the 47°F and 17°F heating source outdoor air temperature (OAT) rating efficiency is required for heating.
    c. Heating full-load rating conditions are at standard rating conditions defined in AHRI 550/590 (I-P), Table 4, includes the impact of defrost for air source heating ratings.
    d. For units that operate in both cooling and heating, compliance with both the cooling and heating efficiency is required.
    e. For heat recovery heating chilling package applications where there is simultaneous cooling and heating, compliance with the heating performance heat recover COPHR is
    only required at one of the four heating AHRI 550/590 (I-P) standard ratings conditions of Low, Medium, Hot-Water 1 or Hot-Water 2. Compliance with the cooling-only perfor-
    mance is required as defined in Notes b and c of Table 110.2-I.
    f. For applications where the chilling package is installed to operate only in heating, compliance only with the heating performance COPH is required at only one of the heating
    AHRI 550/590 (I-P) standard rating conditions of Low, Medium, High, or Boost. Compliance with cooling performance is not required.
    g. For heat pump chilling package applications where the cooling capacity is not being used for conditioning, compliance with the heating performance COPH is only required at
    one of the heating AHRI 550/590 (I-P) standard rating conditions of Low, Medium, High, or Boost. Compliance with the cooling performance is required as defined in Notes b
    and c of Table 110.2-I, except as noted in Note f.
    h. Water-to-water heat pumps with a capacity less than 135,000 Btu/h are included in Table 110.2-B, Heat Pumps—Minimum Efficiency Requirements.
    i. Source leaving liquid temperature.
    1. The cooling evaporator liquid flow rate used for the heating rating for a reverse cycle air-to-water heat pump shall be the flow rate determined during the full load cooling rating.
    2. The cooling evaporator liquid flow rate for the simultaneous cooling and heating and heat recovery liquid cooled chilling packages rating shall be the liquid flow rates
    from the cooling operation full-load rating.
    3. For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|a.

  • CALGreen § 207.1 High relevance — show source text

    Any cracking or checking visible to the eye fails the test procedure.|1. Any cracking or checking visible to the eye fails the test procedure.|1. Any cracking or checking visible to the eye fails the test procedure.|

    SECTION A6.207 [OSHPD 1, 2 & 4]—HVAC DESIGN, EQUIPMENT AND INSTALLATION

    A6.207.1 Space-conditioning equipment certification by manufacturers. Any space-conditioning equipment listed in this section may be installed only if the manufacturer has certified that the equipment complies with all the applicable requirements of this section.

    A6.207.1.1 Efficiency. Equipment shall meet the applicable requirements in Tables A6.207.1-A through A6.207.1-M, subject to the following:

    1. If more than one standard is listed for any equipment in Tables A6.207.1-A through A6.207.1-M, the equipment shall meet all the applicable standards that are listed; and
    2. If more than one test method is listed in Tables A6.207.1-A through A6.207.1-M, the equipment shall comply with the applicable standard when tested with each test method; and
    3. Where equipment can serve more than one function, such as both heating and cooling or both space heating and water heating, it shall comply with all the requirements applicable to each function; and
    4. Where a requirement is for equipment rated at its “maximum rated capacity” or “minimum rated capacity,” the capacity shall be as provided for and allowed by the controls, during steady-state operation.

    Exception: Water-cooled centrifugal water-chilling packages that are not designed for operation at ARI Standard 550 test conditions of 44°F leaving chilled water temperature and 85°F entering condenser water temperature shall have a minimum full load COP rating as shown in Tables A6.207.1-H, A6.207.1-I and A6.207.1-J and a minimum NPLV rating as shown in Tables A6.207.1-K, A6.207.1-L and A6.207.1-M. The table values are only applicable over the following full load design ranges:

    Leaving Chiller Water Temperature 40 to 48°F Entering Condenser Water Temperature 75 to 85°F Condensing Water Temperature Rise 5 to 15°F

    APPENDIX A6.1-8 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

    TABLE A6.207.1-A— ELECTRICALLY OPERATED UNITARY AIR CONDITIONERS AND CONDENSING UNITS—MINIMUM EFFICIENCY
    REQUIREMENTS    		 Col2 Col3 Col4 Col5
    EQUIPMENT TYPE SIZE CATEGORY EFFICIENCY1 EFFICIENCY1 TEST PROCEDURE
    EQUIPMENT TYPE SIZE CATEGORY Before 1/1/2010 After 1/1/2010 After 1/1/2010
    Air conditioners,
    Air cooled    		 ≥ 65,000 Btu/h and
    < 135,000 Btu/h
    		 10.3 EER2 11.2 EER2 ARI 340/360
    Air conditioners,
  • CALGreen § 503.7.1 High relevance — show source text

    (3) Table E 503.7.1(3), “Water-Chilling Packages—Minimum Efficiency Requirements” (See Section E 503.4.1 for water-cooled centrifugal water-chilling packages that are designed to operate at nonstandard conditions.) (4) Table E 503.7.1(4), “Electrically Operated Packaged Terminal Air Conditioners, Packaged Terminal Heat Pumps, Single-Package Vertical Air Conditioners, Single-Package Vertical Heat Pumps, Room Air Conditioners, and Room Air Conditioner Heat Pumps—Minimum Efficiency Requirements” (5) Table E 503.7.1(5), “Warm-Air Furnaces and Combination Warm-Air Furnaces/Air-Conditioning Units, WarmAir Duct Furnaces, and Unit Heaters—Minimum Efficiency Requirements”

    420 2025 CALIFORNIA MECHANICAL CODE

    ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

    APPENDIX E

    (6) Table E 503.7.1(6), “Gas- and Oil-Fired Boilers—Minimum Efficiency Requirements” (7) Table E 503.7.1(7), “Performance Requirements for Heat-Rejection Equipment—Minimum Efficiency Requirements” (8) Table E 503.7.1(8), “Electrically Operated VariableRefrigerant-Flow Air Conditioners—Minimum Efficiency Requirements”

    (9) Table E 503.7.1(9), “Electrically Operated VariableRefrigerant-Flow and Applied Heat Pumps—Minimum Efficiency Requirements”

    (10)Table E 503.7.1(10), “Floor-Mounted Air Conditioners and Condensing Units Serving Computer Rooms”

    (11)Table E 503.7.1(11), “Commercial Refrigerators, Commercial Freezers, Freezers, and Refrigeration—Minimum Efficiency Requirements”

    (12)Table E 503.7.1(12), “Vapor-Compression-Based Indoor Pool Dehumidifiers—Minimum Efficiency Requirements”

    (13) Table E 503.7.1(13), “Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, without Energy Recovery—Minimum Efficiency Requirements”

    (14)Table E 503.7.1(14), “Electrically Operated DX-DOAS Units, Single-Package and Remote Condenser, with Energy Recovery—Minimum Efficiency Requirements”

    (15)Table E 503.7.1(15), “Electrically Operated WaterSource Heat Pumps—Minimum Efficiency Requirements”

    (16)Table E 503.7.1(16), “Heat Pump and Heat Recovery Chiller Packages—Minimum Efficiency Requirement”

    (17)Table E 503.7.1(17), “Ceiling-Mounted Computer-Room Air Conditioners—Minimum Efficiency Requirements”

    (18)Table E 503.7.1(18), “Walk-In Cooler and Freezer Display Door Efficiency Requirements”

    (19)Table E 503.7.1(19), “Walk-In Cooler and Freezer Nondisplay Door Efficiency Requirements” (20)Table E 503.7.1(20), “Walk-In Cooler and Freezer Refrigeration System Efficiency Requirements”

    [ASHRAE 90.1:6.4.1.1] E 503.4.1 Water-Cooled Centrifugal Chilling Packages. Equipment not designed for operation in accordance with AHRI 550/590 test conditions of

  • CALGreen § 207.1 High relevance — show source text

    APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

    TABLE A6.207.1-D—WATER CHILLING PACKAGES—MINIMUM EFFICIENCY REQUIREMENTS Col2 Col3 Col4
    EQUIPMENT TYPE SIZE CATEGORY EFFICIENCY TEST PROCEDURE
    Air cooled, with condenser < 150 Tons 2.80 COP ARI 550/590
    Electrically operated ≥ 150 Tons 3.05 IPLV 3.05 IPLV
    Air cooled, without condenser All Capacities 3.10 COP
    Electrically operated Electrically operated 3.45 IPLV 3.45 IPLV
    Water cooled, electrically operated, positive displacement All Capacities 4.20 COP ARI 550/590
    (Reciprocating) (Reciprocating) 5.05 IPLV 5.05 IPLV
    Water cooled, < 150 Tons
    		 4.45 COP ARI 550/590
    Water cooled, < 150 Tons
    		 5.20 IPLV 5.20 IPLV
    Electrically operated, ≥ 150 Tons and 4.90 COP 4.90 COP
    Positive displacement < 300 Tons
    ≥ 300 Tons    		 5.60 IPLV 5.60 IPLV
    Positive displacement < 300 Tons
    ≥ 300 Tons    		 5.50 COP 5.50 COP
    (Rotary screw and scroll) 6.15 IPLV 6.15 IPLV
    Water cooled, electrically operated, centrifugal < 150 Tons 5.00 COP ARI 550/590
    Water cooled, electrically operated, centrifugal < 150 Tons 5.25 IPLV 5.25 IPLV
    Water cooled, electrically operated, centrifugal ≥ 150 Tons and
    < 300 Tons    		 5.55 COP 5.55 COP
    Water cooled, electrically operated, centrifugal ≥ 150 Tons and
    < 300 Tons    		 5.90 IPLV 5.90 IPLV
    Water cooled, electrically operated, centrifugal ≥ 300 Tons 6.10 COP 6.10 COP
    Water cooled, electrically operated, centrifugal ≥ 300 Tons 6.40 IPLV 6.40 IPLV
    Air cooled absorption, single effect All Capacities 0.60 COP ARI 560
    Water cooled absorption, single effect All Capacities 0.70 COP 0.70 COP
    Absorption double effect, indirect-fired All Capacities 1.00 COP 1.00 COP
    Absorption double effect, indirect-fired All Capacities 1.05 IPLV 1.05 IPLV
    Absorption double effect, direct-fired All Capacities 1.00 COP 1.00 COP
    Absorption double effect, direct-fired All Capacities 1.00 IPLV 1.00 IPLV
    Water cooled gas engine driven chiller All Capacities 1.2 COP ANSI Z21.40.4
    Water cooled gas engine driven chiller All Capacities 2.0 IPLV 2.0 IPLV

    |TABLE A6.207.

  • CALGreen § 110.2 High relevance — show source text

    Units that only have capabilities for partial heat recovery shall meet the requirements of Table 110.2-D, Water
    Chilling Packages—Minimum Efficiency Requirements.
    g. For heat recovery heating chilling package applications where there is simultaneous cooling and heating, compliance with the heating performance heat recover COPHR is
    only required at one of the four heating AHRI 550/590 (I-P) standard ratings conditions of Low, Medium, Hot-Water 1 or Hot-Water 2. Compliance with the cooling-only perfor-
    mance is required as defined in Notes b and c of Table 110.2-I.
    h. Water-to-water heat pumps with a capacity less than 135,000 Btu/h are included in Table 110.2-B, Heat Pumps—Minimum Efficiency Requirements.
    i. Source leaving liquid temperature.
    1. The cooling evaporator liquid flow rate used for the heating rating for a reverse cycle air-to-water heat pump shall be the flow rate determined during the full-load cool-
    ing rating.
    2. The cooling evaporator liquid flow rate for the simultaneous cooling and heating and heat recovery liquid cooled chilling packages rating shall be the liquid flow rates
    from the cooling operation full-load rating.
    3. For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|

    2025 CALIFORNIA ENERGY CODE 51

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    SECTION 110.3—MANDATORY REQUIREMENTS FOR SERVICE WATER-HEATING SYSTEMS AND EQUIPMENT

    (a) Certification by manufacturers. Any service water- heating system or equipment may be installed only if the manufacturer has certified that the system or equipment complies with all of the requirements of this subsection for that system or equipment.

    1. Temperature controls for service water-heating systems. Service water-heating systems shall be equipped with automatic temperature controls capable of adjustment from the lowest to the highest acceptable temperature settings for the intended use as listed in Table 3, Chapter 50 of the ASHRAE Handbook, HVAC Applications Volume or Table 613.1 of the Cali- fornia Plumbing Code for healthcare facilities. Exception to Section 110.3(a)1: Residential occupancies.

    (b) Efficiency. Equipment shall meet the applicable requirements of the Appliance Efficiency Regulations as required by Section 110.1, subject to the following:

    1. If more than one standard is listed in the Appliance Efficiency Regulations, the equipment shall meet all the standards listed; and

    2. If more than one test method is listed in the Appliance Efficiency Regulations, the equipment shall comply with the applicable standard when tested with each test method; and

    3. Where equipment can serve more than one function, such as both heating and cooling, or both space heating and water heating, it shall comply with all the requirements applicable to each function; and

    4. Where a requirement is for equipment rated at its “maximum rated capacity” or “minimum rated capacity,” the capacity shall be as provided for and allowed by the controls, during steady-state operation.

    (c) Installation. Any service water-heating system or equipment may be installed only if the system or equipment complies with all of the applicable requirements of this subsection for the system or equipment. 1.

  • CALGreen § 6.15 High relevance — show source text

    15 IPLV|6.15 IPLV| |Water cooled, electrically operated, centrifugal|< 150 Tons|5.00 COP|ARI 550/590| |Water cooled, electrically operated, centrifugal|< 150 Tons|5.25 IPLV|5.25 IPLV| |Water cooled, electrically operated, centrifugal|≥ 150 Tons and
    < 300 Tons|5.55 COP|5.55 COP| |Water cooled, electrically operated, centrifugal|≥ 150 Tons and
    < 300 Tons|5.90 IPLV|5.90 IPLV| |Water cooled, electrically operated, centrifugal|≥ 300 Tons|6.10 COP|6.10 COP| |Water cooled, electrically operated, centrifugal|≥ 300 Tons|6.40 IPLV|6.40 IPLV| |Air cooled absorption, single effect|All Capacities|0.60 COP|ARI 560| |Water cooled absorption, single effect|All Capacities|0.70 COP|0.70 COP| |Absorption double effect, indirect-fired|All Capacities|1.00 COP|1.00 COP| |Absorption double effect, indirect-fired|All Capacities|1.05 IPLV|1.05 IPLV| |Absorption double effect, direct-fired|All Capacities|1.00 COP|1.00 COP| |Absorption double effect, direct-fired|All Capacities|1.00 IPLV|1.00 IPLV| |Water cooled gas engine driven chiller|All Capacities|1.2 COP|ANSI Z21.40.4| |Water cooled gas engine driven chiller|All Capacities|2.0 IPLV|2.0 IPLV|

    TABLE A6.207.1-E—PACKAGED TERMINAL AIR CONDITIONERS AND PACKAGED TERMINAL HEAT PUMPS – MINIMUM EFFICIENCY
    REQUIREMENTS    		 Col2 Col3 Col4 Col5
    EQUIPMENT TYPE SIZE CATEGORY (input) SUBCATEGORY OR
    RATING CONDITION    		 EFFICIENCY1 TEST PROCEDURE
    PTAC (cooling mode)
    new construction    		 All Capacities 95°F db
    outdoor air    		 12.5 – (0.213 × Cap/1000)1 EER ARI 310/380
    PTAC (cooling mode)
    replacements2    		 PTAC (cooling mode)
    replacements2    		 PTAC (cooling mode)
    replacements2    		 10.9 – (0.213 × Cap/1000)1 EER 10.9 – (0.213 × Cap/1000)1 EER
    PTHP (cooling mode)
    new construction    		 PTHP (cooling mode)
    new construction    		 PTHP (cooling mode)
    new construction    		 12.3 – (0.213 × Cap/1000)1 EER 12.3 – (0.213 × Cap/1000)1 EER
    PTHP (cooling mode)
    replacements2    		 PTHP (cooling mode)
    replacements2    		 PTHP (cooling mode)
    replacements2    		 10.8 – (0.213 × Cap/1000)1 EER 10.8 – (0.213 × Cap/1000)1 EER
    PTHP (heating mode)
    new construction    		 PTHP (heating mode)
    new construction    		 3.2 – (0.
  • CALGreen § 205.3.9.4.2 High relevance — show source text

    A6.205.3.9.4.2 Meet the minimum performance requirements listed in Table A6.205.3-B or the minimum performance requirements of ASTM C836, D3468, D6083 or D6694, whichever are appropriate to the coating material.

    Exceptions:

    1. Aluminum-pigmented asphalt roof coatings shall meet the requirements of ASTM D2824 or ASTM D6848 and be installed as specified by ASTM D3805.
    2. Cement-based roof coatings shall contain a minimum of 20 percent cement and shall meet the requirements of ASTM C1583, ASTM D822 and ASTM D5870.
    TABLE A6.205.3-B—MINIMUM PERFORMANCE REQUIREMENTS FOR LIQUID APPLIED ROOF COATINGS Col2 Col3
    PHYSICAL PROPERTY ASTM TEST PROCEDURE REQUIREMENT
    Initial percent elongation (break) D2370 Minimum 200 percent 73ºF (23ºC)
    Initial percent elongation (break)
    OR
    Initial flexibility    		 D2370
    D522, Test B    		 Minimum 60 percent 0ºF (-18ºC)
    Minimum pass 1″ mandrel 0ºF (-18ºC)
    Initial tensile strength (maximum stress) D2370 Minimum 100 psi (1.38 Mpa) 73ºF (23ºC)
    Initial tensile strength (maximum stress)
    OR
    Initial flexibility    		 D2370
    D522, Test B    		 Minimum 200 psi (2.76 Mpa) 0ºF (-18ºC)
    Minimum pass 1″ mandrel 0ºF (-18ºC)
    Final percent elongation (break) after accelerated weathering 1000 h D2370 Minimum 100 percent 73ºF (23ºC)
    Final percent elongation (break) after accelerated weathering 1000 h
    OR
    Flexibility after accelerated weathering 1000 h    		 D2370 Minimum 40 percent 0ºF (-18ºC)
    Minimum pass 1″ mandrel 0ºF (-18ºC)
    Permeance D1653 Maximum 50 perms
    Accelerated weathering 1000 h D4798 No cracking or checking1
    1. Any cracking or checking visible to the eye fails the test procedure. 1. Any cracking or checking visible to the eye fails the test procedure. 1. Any cracking or checking visible to the eye fails the test procedure.

    SECTION A6.207 [OSHPD 1, 2 & 4]—HVAC DESIGN, EQUIPMENT AND INSTALLATION

    A6.207.1 Space-conditioning equipment certification by manufacturers. Any space-conditioning equipment listed in this section may be installed only if the manufacturer has certified that the equipment complies with all the applicable requirements of this section.

    A6.207.1.1 Efficiency. Equipment shall meet the applicable requirements in Tables A6.207.1-A through A6.207.1-M, subject to the following:

    1. If more than one standard is listed for any equipment in Tables A6.207.1-A through A6.207.1-M, the equipment shall meet all the applicable standards that are listed; and
    2. If more than one test method is listed in Tables A6.207.1-A through A6.207.1-M, the equipment shall comply with the applicable standard when tested with each test method; and
  • CALGreen § 110.2 High relevance — show source text

    For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|a. The size category is the full-load net refrigeration cooling mode capacity, which is the capacity of the evaporator available for cooling of the thermal load external to the chill-
    ing package.
    b. For air source heat pumps, compliance with both the 47°F and 17°F heating source outdoor air temperature (OAT) rating efficiency is required for heating.
    c. Heating full-load rating conditions are at standard rating conditions defined in AHRI 550/590 (I-P), Table 4, which includes the impact of defrost for air source heating ratings.
    d. For units that operate in both cooling and heating, compliance with both the cooling and heating efficiency is required.
    e. For heat recovery heating chilling package applications where there is simultaneous cooling and heating, compliance with the heating performance heat recover COPHR is
    only required at one of the four heating AHRI 550/590 (I-P) standard ratings conditions of Low, Medium, Hot-Water 1 or Hot-Water 2. Compliance with the cooling-only perfor-
    mance is required as defined in Notes b and c of Table 110.2-I.
    f. For liquid source heat recovery chilling packages that have capabilities for heat rejection to a heat recovery condenser and a tower condenser, the COPHR applies to operation
    at full load with 100 percent heat recovery (no tower rejection). Units that only have capabilities for partial heat recovery shall meet the requirements of Table 110.2-D, Water
    Chilling Packages—Minimum Efficiency Requirements.
    g. For heat recovery heating chilling package applications where there is simultaneous cooling and heating, compliance with the heating performance heat recover COPHR is
    only required at one of the four heating AHRI 550/590 (I-P) standard ratings conditions of Low, Medium, Hot-Water 1 or Hot-Water 2. Compliance with the cooling-only perfor-
    mance is required as defined in Notes b and c of Table 110.2-I.
    h. Water-to-water heat pumps with a capacity less than 135,000 Btu/h are included in Table 110.2-B, Heat Pumps—Minimum Efficiency Requirements.
    i. Source leaving liquid temperature.
    1. The cooling evaporator liquid flow rate used for the heating rating for a reverse cycle air-to-water heat pump shall be the flow rate determined during the full-load cool-
    ing rating.
    2. The cooling evaporator liquid flow rate for the simultaneous cooling and heating and heat recovery liquid cooled chilling packages rating shall be the liquid flow rates
    from the cooling operation full-load rating.
    3. For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|a. The size category is the full-load net refrigeration cooling mode capacity, which is the capacity of the evaporator available for cooling of the thermal load external to the chill-
    ing package.
    b. For air source heat pumps, compliance with both the 47°F and 17°F heating source outdoor air temperature (OAT) rating efficiency is required for heating.
    c.

  • CALGreen § 106.11. High relevance — show source text

    **Locate orient and shade the building as
    required in Section A6.106.11.||||| |SECTION A6.205 Building Envelope||||| |A6.205.1 Fenestration products and exterior doors.
    A6.205.1.1 Certification of fenestration products and exterior door other than field-
    fabricated.||||| |A6.205.1.2 Installation of field-fabricated fenestration and exterior doors.||||| |A6.205.2 Joints and other openings.||||| |A6.205.3 Installation and roofing products.|||||

    2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-37

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

    NONRESIDENTIAL OCCUPANCIES APPLICATION CHECKLIST [OSHPD 1, 2 and 4] — continued

    FEATURE OR MEASURE COMPLIANCE LEVELS Col3 Col4 NOTES
    FEATURE OR MEASURE Mandatory
    CALGreen    		 VOLUNTARY
    CALGreen    		 VOLUNTARY
    CALGreen    		 VOLUNTARY
    CALGreen
    FEATURE OR MEASURE Mandatory
    CALGreen    		 Tier 1 Tier 2 Tier 2
    SECTION A6.207 HVAC Design, Equipment and Installation
    A6.207.1 Space-conditioning equipment certification by manufacturers.
    A6.207.1.1 Efficiency.
    A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters.
    A6.207.1.3 Thermostats.
    A6.207.1.4 Gas-and oil-fired furnace standby loss controls.







    A6.207.2 Space conditioning systems.
    A6.207.2.1 Supply air temperature reset controls.
    A6.207.2.2 Electric resistance heating.
    A6.207.2.3 Heat rejection systems.
    A6.207.2.4 Hydronic system measures.
    A6.207.2.5 Air distribution system duct leakage sealing.
    **A6.207.2.6 Variable air volume control for single zone systems.
  • CALGreen § 207.1.1 High relevance — show source text

    **
    A6.207.1.1 Efficiency.
    A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters.
    A6.207.1.3 Thermostats.
    A6.207.1.4 Gas-and oil-fired furnace standby loss controls.||



    |



    || |A6.207.2 Space conditioning systems.
    A6.207.2.1 Supply air temperature reset controls.
    A6.207.2.2 Electric resistance heating.
    A6.207.2.3 Heat rejection systems.
    A6.207.2.4 Hydronic system measures.
    A6.207.2.5 Air distribution system duct leakage sealing.
    A6.207.2.6 Variable air volume control for single zone systems.||





    |





    || |A6.207.3 Service water-heating systems and equipment.
    A6.207.3.1 Certification by manufacturers.
    A6.207.3.2 Efficiency.
    A6.207.3.3 Installation.||


    |


    || |A6.207.4 Natural gas central furnaces, cooking equipment and pool and spa heaters.
    Pilot lights prohibited.||||| |A6.207.5 Controls for space-conditioning systems.
    A6.207.5.1 Thermostatic controls for each zone.
    A6.207.5.2 Criteria for zonal thermostatic controls.
    A6.207.5.3 Heat pump controls.
    A6.207.5.4 Dampers for air supply and exhaust equipment.
    A6.207.5.5 Automatic demand shed controls.||




    |




    || |A6.207.6 Pipe insulation.||||| |SECTION A6.209 Lighting||||| |A6.209.1 Lighting control devices, ballasts and luminaires.
    A6.209.1.1 All devices: Instructions and calibration.
    A6.209.1.2 Indicator lights.
    **A6.209.1.3 Automatic time switch control devices.

  • CALGreen § 110.2 High relevance — show source text

    Compliance with the cooling-only perfor-
    mance is required as defined in Notes b and c of Table 110.2-I.
    f. For applications where the chilling package is installed to operate only in heating, compliance only with the heating performance COPH is required at only one of the heating
    AHRI 550/590 (I-P) standard rating conditions of Low, Medium, High, or Boost. Compliance with cooling performance is not required.
    g. For heat pump chilling package applications where the cooling capacity is not being used for conditioning, compliance with the heating performance COPH is only required at
    one of the heating AHRI 550/590 (I-P) standard rating conditions of Low, Medium, High, or Boost. Compliance with the cooling performance is required as defined in Notes b
    and c of Table 110.2-I, except as noted in Note f.
    h. Water-to-water heat pumps with a capacity less than 135,000 Btu/h are included in Table 110.2-B, Heat Pumps—Minimum Efficiency Requirements.
    i. Source leaving liquid temperature.
    1. The cooling evaporator liquid flow rate used for the heating rating for a reverse cycle air-to-water heat pump shall be the flow rate determined during the full load cooling rating.
    2. The cooling evaporator liquid flow rate for the simultaneous cooling and heating and heat recovery liquid cooled chilling packages rating shall be the liquid flow rates
    from the cooling operation full-load rating.
    3. For heating-only fluid-to-fluid chiller packages, the evaporator flow rate obtained with an entering liquid temperature of 54°F and a leaving liquid temperature of 44°F
    shall be used.
    j. NA means the requirements are not applicable.|

    2025 CALIFORNIA ENERGY CODE 49

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    TABLE 110.2-K—HEAT PUMP AND HEAT RECOVERY CHILLER PACKAGES,
    SIMULTANEOUS COOLING AND HEATING, HEATING OPERATION—MINIMUM EFFICIENCY REQUIREMENTS    		 Col2 Col3 Col4 Col5 Col6 Col7
    Equipment Type: Air source Equipment Type: Air source Equipment Type: Air source Equipment Type: Air source Equipment Type: Air source Equipment Type: Air source Equipment Type: Air source
    SIZE CATEGORY
    REFRIGERATING
    **CAPACITYa, **
    TONR    		 HEATING
    SOURCE
    CONDITIONS
    (LEAVING
    LIQUID) OR
    OAT
    (db/wb)b,°F    		 SIMULTANEOUS
    COOLING AND
    HEATING FULL-LOAD
    ** EFFICIENCY**
    (COPSHC) c, d, e, f, g, W/W,
    ENTERING/LEAVING
    HEATING LIQUID
    **TEMPERATURE, LOW,
  • CALGreen § 140.4 High relevance — show source text

    .

    TABLE 140.4-H-2—MINIMUM EFFICIENCY FOR PROPELLER OR AXIAL FAN OPEN-CIRCUIT COOLING TOWERS (GPM/HP) Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9 Col10 Col11 Col12 Col13 Col14 Col15 Col16
    CZ 1 CZ 2 CZ 3 CZ 4 CZ 5 CZ 6 CZ 7 CZ 8 CZ 9 CZ 10 CZ 11 CZ 12 CZ 13 CZ 14 CZ 15 CZ 16
    42.1 70 60 70 70 80 80 80 80 80 60 70 80 60 80 42.1

    (i) Minimum chiller efficiency. Chillers shall meet or exceed Path B from Table 110.2-D.

    Exception 1 to Section 140.4(i): Chillers with electrical service > 600V.

    Exception 2 to Section 140.4(i): Chillers attached to a heat recovery system with a design heat recovery capacity > 40 percent of the design chiller cooling capacity.

    Exception 3 to Section 140.4(i): Chillers used to charge thermal energy storage systems where the charging temperature is < 40°F.

    Exception 4 to Section 140.4(i): In buildings with more than three chillers, only three chillers are required to meet the Path B efficiencies.

    (j) Limitation of air-cooled chillers. Chilled water plants shall not have more than 300 tons provided by air-cooled chillers.

    Exception 1 to Section 140.4(j): Where the water quality at the building site fails to meet manufacturer’s specifications for the use of water-cooled chillers.

    Exception 2 to Section 140.4(j): Chillers that are used to charge a thermal energy storage system with a design temperature of less than 40°F (4°C).

    Exception 3 to Section 140.4(j): Systems serving healthcare facilities.

    (k) Hydronic system measures.

    1. Hydronic variable flow systems. HVAC chilled and hot water pumping shall be designed for variable fluid flow and shall be capable of reducing pump flow rates to no more than the larger of: a) 50 percent or less of the design flow rate; or b) the minimum flow required by the equipment manufacturer for the proper operation of equipment served by the system.

    Exception 1 to Section 140.4(k)1: Systems that include no more than three control valves.

    Exception 2 to Section 140.4(k)1: Systems having a total pump system power less than or equal to 1.5 hp. 2. Chiller isolation. When a chilled water system includes more than one chiller, provisions shall be made so that flow through any chiller is automatically shut off when that chiller is shut off while still maintaining flow through other operating chiller(s). Chillers that are piped in series for the purpose of increased temperature differential shall be considered as one chiller.

  • CALGreen § 0.610 High relevance — show source text


    centrifugal|≥ 150 tons
    and < 300 tons|≤ 0.610 kW/ton
    ≤ 0.550 IPLV|≤ 0.635 kW/ton
    ≤ 0.400 IPLV|≤ 0.635 kW/ton
    ≤ 0.400 IPLV| |Water cooled, electrically operated,
    centrifugal|≥ 300 tons
    and < 400 tons|≤ 0.560 kW/ton
    ≤ 0.520 IPLV|≤ 0.595 kW/ton
    ≤ 0.390 IPLV|≤ 0.595 kW/ton
    ≤ 0.390 IPLV| |Water cooled, electrically operated,
    centrifugal|≥ 400 tons
    and < 600 tons|≤ 0.560 kW/ton
    ≤ 0.500 IPLV|≤ 0.585 kW/ton
    ≤ 0.380 IPLV|≤ 0.585 kW/ton
    ≤ 0.380 IPLV| |Water cooled, electrically operated,
    centrifugal|≥ 600 tons|≤ 0.560 kW/ton
    ≤ 0.500 IPLV|≤ 0.585 kW/ton
    ≤ 0.380 IPLV|≤ 0.585 kW/ton
    ≤ 0.380 IPLV| |Air cooled absorption single effect|All capacities|≥ 0.600 COP|N.A.d|AHRI 560| |Water cooled absorption single effect|All capacities|≥ 0.700 COP|N.A.d|N.A.d| |Absorption double effect,
    indirect-fired|All capacities|≥ 1.000 COP
    ≥ 1.050 IPLV|N.A.d|N.A.d| |Absorption double effect,
    direct-fired|All capacities|≥ 1.000 COP
    ≥ 1.000 IPLV|N.A.d|N.A.d| |Water cooled gas engine
    driven chiller|All capacities|≥ 1.2 COP
    ≥ 2.0 IPLV|N.A.d|ANSI Z21.40.4| |a. No requirements for:
    • Centrifugal chillers with design leaving evaporator temperature < 36°F; or
    • Positive displacement chillers with design leaving fluid temperature ≤ 32°F; or
    • Absorption chillers with design leaving fluid temperature < 40°F.
    b. Must meet the minimum requirements of Path A or Path B. However, both the full load (COP) and IPLV must be met to fulfill the requirements of the applicable path.
    c. See Section 100.1 for definitions.
    d. N.A. means not applicable.|a. No requirements for:
    • Centrifugal chillers with design leaving evaporator temperature < 36°F; or
    • Positive displacement chillers with design leaving fluid temperature ≤ 32°F; or
    • Absorption chillers with design leaving fluid temperature < 40°F.
    b. Must meet the minimum requirements of Path A or Path B. However, both the full load (COP) and IPLV must be met to fulfill the requirements of the applicable path.
    c. See Section 100.1 for definitions.
    d. N.A. means not applicable.|a.

  • CALGreen § 2.25 High relevance — show source text

    000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)|17°F db/15°F wb
    outdoor air|2.25 COP|2.25 COP| |Air cooled
    (heating mode)
    Split system and single package|≥ 135,000 Btu/h and
    < 240,000 Btu/h
    (cooling capacity)|47°F db/43°F wb
    outdoor air|Federal Minimum COP|Federal Minimum COP| |Air cooled
    (heating mode)
    Split system and single package|≥ 240,000 Btu/h and
    < 760,000 Btu/h|≥ 240,000 Btu/h and
    < 760,000 Btu/h|Federal Minimum COP|Federal Minimum COP| |Air cooled
    (heating mode)
    Split system and single package|≥ 135,000 Btu/h
    (cooling capacity)|17°F db/15°F wb
    outdoor air|2.05 COP|2.05 COP| |Water source
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|68ºF entering water|Federal Minimum COP|ISO-13256-1| |Water source
    (heating mode)|≥ 135,000 Btu/h and
    < 240,000 Btu/h|68ºF entering water|Federal Minimum COP|ISO-13256-1| |Groundwater source
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|50ºF entering water|3.7 COP|ISO-13256-1| |Ground source
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|32ºF entering water|3.2 COP|ISO-13256-1| |Water source water-to-water
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|68ºF entering water|3.7 COP|ISO-13256-2| |Groundwater source water-to-
    water
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|50ºF entering water|3.1 COP|ISO-13256-2| |Ground source brine-to-water
    (heating mode)|< 135,000 Btu/h
    (cooling capacity)|32ºF entering water|2.5 COP|ISO-13256-2| |a. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
    b. Applicable test procedure and reference year are provided under the definitions.|a. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
    b. Applicable test procedure and reference year are provided under the definitions.|a. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
    b. Applicable test procedure and reference year are provided under the definitions.|a. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
    b. Applicable test procedure and reference year are provided under the definitions.|a. Deduct 0.2 from the required EERs and IEERs for units with a heating section other than electric resistance heat.
    b. Applicable test procedure and reference year are provided under the definitions.|

  • CALGreen § 6.1507 High relevance — show source text

    LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
    2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
    Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
    where× = Condenser DT + LIFT
    COPadj = Kadj * COPstd|

    A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters. Heat pumps with supplementary electric resistance heaters shall have controls:

    A6.207.1.2.1 That prevent supplementary heater operation when the heating load can be met by the heat pump alone; and

  • CALGreen § 18.0 High relevance — show source text

    000 Btu/h|59ºF entering water|18.0 EER|ISO-13256-1|

    42 2025 CALIFORNIA ENERGY CODE

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    TABLE 110.2-B—HEAT PUMPS—MINIMUM EFFICIENCY REQUIREMENTS—continued Col2 Col3 Col4 Col5
    EQUIPMENT TYPE SIZE CATEGORY SUBCATEGORY OR
    RATING CONDITION    		 EFFICIENCYa TEST PROCEDUREb
    Ground source
    (cooling mode)    		 < 135,000 Btu/h 77ºF entering water 14.1 EER ISO-13256-1
    Water source water-to-water
    (cooling mode)    		 < 135,000 Btu/h 86ºF entering water 10.6 EER ISO-13256-2
    Groundwater source water-to-water
    (cooling mode)    		 < 135,000 Btu/h 59ºF entering water 16.3 EER ISO-13256-2
    Ground source brine-to-water
    (cooling mode)    		 < 135,000 Btu/h 77ºF entering water 12.1 EER ISO-13256-2
    Air cooled
    (heating mode)
    Split system and single package    		 ≥ 65,000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)    		 47°F db/43°F wb
    outdoor air    		 Federal Minimum COP AHRI 340/360
    Air cooled
    (heating mode)
    Split system and single package    		 ≥ 65,000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)    		 17°F db/15°F wb
    outdoor air    		 2.25 COP 2.25 COP
    Air cooled
    (heating mode)
    Split system and single package    		 ≥ 135,000 Btu/h and
    < 240,000 Btu/h
    (cooling capacity)    		 47°F db/43°F wb
    outdoor air    		 Federal Minimum COP Federal Minimum COP
    Air cooled
    (heating mode)
    Split system and single package    		 ≥ 240,000 Btu/h and
    < 760,000 Btu/h    		 ≥ 240,000 Btu/h and
    < 760,000 Btu/h    		 Federal Minimum COP Federal Minimum COP
    Air cooled
    (heating mode)
    Split system and single package    		 ≥ 135,000 Btu/h
    (cooling capacity)    		 17°F db/15°F wb
    outdoor air    		 2.05 COP 2.05 COP
    Water source
    (heating mode)    		 < 135,000 Btu/h
    (cooling capacity)    		 68ºF entering water Federal Minimum COP ISO-13256-1
    Water source
    (heating mode)    		 ≥ 135,000 Btu/h and
    < 240,000 Btu/h    		 68ºF entering water Federal Minimum COP ISO-13256-1
    Groundwater source
    (heating mode)    		 < 135,000 Btu/h
    (cooling capacity)    		 50ºF entering water 3.7 COP ISO-13256-1
    Ground source
    (heating mode)    		 < 135,
  • CALGreen § 207.1 High relevance — show source text

    Base models of open factory assembled cooling towers are open cooling towers configured
    in exact accordance with the Data of Record submitted to CTI as specified by CTI STD-201. There are no certification requirements for field erected cooling towers.
    4. The efficiencies for open cooling towers listed in Table A6.207.1-G are not applicable for closed-circuit cooling towers.|

    2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-11

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

    TABLE A6.207.1-H —COPS FOR NONSTANDARD CENTRIFUGAL CHILLERS < 150 TONS Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9
    CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0    		 CENTRIFUGAL CHILLERS < 150 Tons
    COPstd = 5.0
    CONDENSER FLOW RATE CONDENSER FLOW RATE CONDENSER FLOW RATE CONDENSER FLOW RATE CONDENSER FLOW RATE CONDENSER FLOW RATE
    2 gpm/ton 2.5
    gpm/ton    		 3 gpm/ton 4 gpm/ton 5 gpm/ton 6 gpm/ton
    Leaving
    Chilled Water
    Temperature
    (°F)    		 Entering
    Condenser
    Water
    Temperature
    (°F)    		 LIFT1
    (°F)    		 Required COP Required COP Required COP Required COP Required COP Required COP
    46 75 29 5.58 5.83 6.03 6.32 6.54 6.70
    45 75 30 5.50 5.74 5.92 6.19 6.38 6.53
    44 75 31 5.42 5.65 5.82 6.07 6.
  • CALGreen § 13.8 Medium relevance — show source text

    8 EER|13.8 EER| |VRF Ground source
    (cooling mode)|< 135,000 Btu/h|All|VRF multisplit systema
    77ºF entering water|13.4 EER|AHRI 1230| |VRF Ground source
    (cooling mode)|≥ 135,000 Btu/h|All|VRF multisplit systema
    77ºF entering water|11.0 EER|11.0 EER| |VRF Air cooled
    (heating mode)|< 65,000 Btu/h
    (cooling capacity)|—|VRF multisplit system|7.7 HSPF
    Before 1/1/2025
    7.5 HSPF2
    On or after 1/1/2025|AHRI 1230| |VRF Air cooled
    (heating mode)|≥ 65,000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)|—|VRF multisplit system
    47ºF db/43ºF wb outdoor air|Federal Minimum COP|Federal Minimum COP| |VRF Air cooled
    (heating mode)|≥ 65,000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)|—|VRF multisplit system
    17ºF db/15ºF wb outdoor air|2.25 COP|2.25 COP| |VRF Air cooled
    (heating mode)|≥ 135,000 Btu/h
    (cooling capacity)|—|VRF multisplit system
    47ºF db/43ºF wb outdoor air|Federal Minimum COP|Federal Minimum COP| |VRF Air cooled
    (heating mode)|≥ 135,000 Btu/h
    (cooling capacity)|—|VRF multisplit system
    17ºF db/15ºF wb outdoor air|2.05 COP|2.05 COP|

    46 2025 CALIFORNIA ENERGY CODE

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    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    TABLE 110.2-G —ELECTRICALLY OPERATED VARIABLE REFRIGERANT FLOW
    AIR-TO-AIR AND APPLIED HEAT PUMPS—MINIMUM EFFICIENCY REQUIREMENTS—continued    		 Col2 Col3 Col4 Col5 Col6
    EQUIPMENT TYPE SIZE CATEGORY HEATING
    ** SECTION TYPE**    		 SUBCATEGORY OR
    RATING CONDITION    		 MINIMUM
    EFFICIENCY    		 TEST
    PROCEDUREa, b
    VRF Water source
    (heating mode)    		 < 65,000 Btu/h
    (cooling capacity)    		 — VRF multisplit system
    68ºF entering water    		 Federal Minimum COP AHRI 1230
    VRF Water source
    (heating mode)    		 ≥ 65,000 Btu/h and
    < 135,000 Btu/h
    (cooling capacity)    		 — VRF multisplit system
    68ºF entering water    		 Federal Minimum COP Federal Minimum COP
    VRF Water source
    (heating mode)    		 ≥ 135,000 Btu/h and
    < 240,
  • CALGreen § 110.2 Medium relevance — show source text
    TABLE 110.2-C—AIR-COOLED GAS-ENGINE HEAT PUMPS Col2 Col3 Col4 Col5
    EQUIPMENT TYPE SIZE CATEGORY SUBCATEGORY OR
    RATING CONDITION    		 EFFICIENCY TEST PROCEDUREa
    Air-cooled gas-engine heat pump
    (cooling mode)    		 All capacities 95°F db outdoor air 0.60 COP ANSI Z21.40.4A
    Air-cooled gas-engine heat pump
    (heating mode)    		 All capacities 47°F db/43°F wb outdoor air 0.72 COP ANSI Z21.40.4A
    a. Applicable test procedure and reference year are provided under the definitions. a. Applicable test procedure and reference year are provided under the definitions. a. Applicable test procedure and reference year are provided under the definitions. a. Applicable test procedure and reference year are provided under the definitions. a. Applicable test procedure and reference year are provided under the definitions.

    2025 CALIFORNIA ENERGY CODE 43

    on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

    ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

    TABLE 110.2-D—WATER CHILLING PACKAGES—MINIMUM EFFICIENCY REQUIREMENTSa, b Col2 Col3 Col4 Col5
    EQUIPMENT TYPE SIZE CATEGORY PATH A
    EFFICIENCYa, b    		 PATH B
    EFFICIENCYa, b    		 TEST
    PROCEDUREc
    Air cooled, with condenser
    electrically operated    		 < 150 tons ≥ 10.100 EER
    ≥ 13.700 IPLV    		 ≥ 9.700 EER
    ≥ 15.800 IPLV    		 AHRI 550/590
    Air cooled, with condenser
    electrically operated    		 ≥ 150 tons ≥ 10.100 EER
    ≥ 14.000 IPLV    		 ≥ 9.700 EER
    ≥ 16.100 IPLV    		 ≥ 9.700 EER
    ≥ 16.100 IPLV
    Air cooled, without condenser
    electrically operated    		 All capacities Air-cooled chillers without condensers must be
    rated with matching condensers and comply with
    the air-cooled chiller efficiency requirements.    		 Air-cooled chillers without condensers must be
    rated with matching condensers and comply with
    the air-cooled chiller efficiency requirements.    		 AHRI 550/590
    Water cooled, electrically
    operated reciprocating    		 All capacities Reciprocating units must comply with the water-
    cooled positive displacement efficiency requirements.    		 Reciprocating units must comply with the water-
    cooled positive displacement efficiency requirements.    		 AHRI 550/590
    Water cooled, electrically operated,
    positive displacement    		 < 75 tons ≤ 0.750 kW/ton
    ≤ 0.600 IPLV    		 ≤ 0.780 kW/ton
    ≤ 0.500 IPLV    		 AHRI 550/590
    Water cooled, electrically operated,
  • CALGreen § 120.5 Medium relevance — show source text

    3(d)3 Mechanical Acceptance Test Technician (CMATT) 120.5(b), 160.3(d)3 CFA and Dwelling Unit Adjustment Factors Table 150.1-C, Table 170.2-T CFM Per Square Foot 110.6(A)1, 120.1(D)3, 120.6(c)5, 140.3(a)9, 140.4(e)1, 141.0(b)2Q, 150.1(c)12A, Table 160.2-B, Table 160.2-C, 170.2(c)4N CFM Per Ton 150.0(M)13, 150.1(C)7, 150.2(B)1F, 160.3(b)5L, 170.2(c)3B, 180.2(b)2A Chalk Board 140.6(b)4 Chilled Water piping 120.3(b)2, 160.3(c)1C, 160.4(f)2B Water plant Table 120.2-A, 140.4(h)5, 140.4(j), Table 160.3-C, 170.2(c)4F Water system 120.6(h), 140.4(k)2, 140.4(m), 170.2(c)4C, I, K Water system cooling capacity Table 140.4-E, Table 170.2-E-2 Chiller 10-103(c)3B, 110.2(a), Table 120.2-A, 120.5(a)8, 16, 120.6(b)2A, Table 130.5-B, 140.4(a), 140.4(i-k), 160.3(d)1H, P, Table 160.3-C, Table 160.6-B, 170.2(c)1, 170.2(c)3, 170.2(c)4G, H, I Chiller Isolation 10-103.2(c), 140.4(k)2, 170.2(c)4I Chimney 110.10(b)3 Church 120.2(e), 130.1(c)4, 140.3(c) Circuit Breaker 110.9(c), 110.10(e), 150.0(n), 150.0(t-v), 160.4(a)1B, 160.9(a-c) Circuit Controls 130.5(d), 141.0(b)2P, 160.6(d), 180.2(b)4B Circulating Air 140.4(c), 170.2(c)4A Circulating Pump 110.2(e)1, 110.3(c)2 Circulation Control 110.4(b) Cladding Material 150.2(b)1I Class 1 Air 120.1(g), 160.2(c)8 Class 2 Air 120.1(g), 160.2(c)8 Class 3 Air 120.1(g), 160.2(C)8 Class 4 Air 120.1(g), 160.2(c)8

    Classification of Dwelling Unit High Luminous Efficacy Light Sources Table 160.5-A Clean-Filter Pressure Drop 150.

  • CALGreen § 8-40 Medium relevance — show source text

    . . . . . . . . . . . . . 8-40

    APPENDIX A4 RESIDENTIAL

    VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A4-3

    A4.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A4-3 A4.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . . APPENDIX A4-9 A4.3 Water Efficiency and Conservation . . . APPENDIX A4-13 A4.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A4-15 A4.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A4-19 A4.6 Tier 1 and Tier 2 . . . . . . . . . . . . . . . . . . . . APPENDIX A4-21

    Division A4.6—Residential Occupancies Application Checklist . . . . . . . . . . . . . APPENDIX A4-23 A4.7 Residential Model Ordinance . . . . . . . . . APPENDIX A4-31

    APPENDIX A5 NONRESIDENTIAL

    VOLUNTARY MEASURES. . . . . . . . . . . . . . . . . APPENDIX A5-3

    A5.1 Planning and Design . . . . . . . . . . . . . . . . . APPENDIX A5-3 A5.2 Energy Efficiency . . . . . . . . . . . . . . . . . . . APPENDIX A5-13 A5.3 Water Efficiency and Conservation . . . APPENDIX A5-19 A5.4 Material Conservation and Resource Efficiency . . . . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-25 A5.5 Environmental Quality . . . . . . . . . . . . . . APPENDIX A5-35 A5.6 Voluntary Tiers . . . . . . . . . . . . . . . . . . . . . APPENDIX A5-41 A5.601 CALGren Tier 1 and Tier 2. . . . . . . . . . APPENDIX A5-41

    A5.602 CALGreen Verification Guidelines Mandatory Measures Checklist . . . . . . . . . . . . . . . APPENDIX A5-44

    A5.602.1 CALGreen Verification Guidelines

    Tier 1 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-48

    A5.602.2 CALGreen Verification Guidelines

    Tier 2 Checklist . . . . . . . . . . . . . . . . . APPENDIX A5-55

    APPENDIX A6 VOLUNTARY STANDARDS FOR HEALTH

Frequently asked questions

Who must certify equipment under CALGreen?

The equipment manufacturer must certify that the space‑conditioning equipment meets the applicable A6.207.1 table entries and test procedures before installation.

Do I need to meet both full‑load COP and IPLV?

If the table or path lists both a full‑load COP and an IPLV/NPLV, the unit must meet both to comply. Check the specific table row.

My chiller is tested at different inlet/outlet water temps — how do I comply?

Use Table A6.207.1‑H (or the Kadj/COPadj adjustment equation) to determine the required COP at your design temps and condenser flow if the unit is not designed for standard ARI 550 test conditions.

Are cooling tower tables applicable to closed‑circuit towers?

No — the Table A6.207.1‑G open‑tower efficiencies are not applicable to closed‑circuit cooling towers; verify the tower type before applying those numbers.

What test procedures should I expect?

Commonly referenced procedures in the tables are AHRI 550/590, AHRI 560, ISO‑13256, and relevant ANSI standards — use the test method listed in the table row for verification.

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