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Division 11 — APPENDIX A4 RESIDENTIAL VOLUNTARY MEASURES

Los Angeles Municipal Code § 4.506 Appendix A4 Residential Voluntary Measures

Los Angeles Municipal Code · 2026-09 edition · updated 2026-10-04 · Los Angeles

Cite as: Los Angeles Municipal Code § 4.506 · Text as of 2026-10-04

4.506.1 Return air filters with a value greater than

MERV 6 shall be installed on HVAC systems. Pressure drop across the filter shall not exceed 0.1 inches water column.

A4.506.2 [HR] Provide filters on return air openings rated MERV 6 or higher during construction when it is necessary to use HVAC equipment.

A4.506.3 Direct-vent appliances shall be used when equipment is located in conditioned space; or the equipment must be installed in an isolated mechanical room.

Environmental Comfort

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Los Angeles Municipal Code

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