Guide
The Glendale heat pump rule changes how certain homeowners can replace or install air conditioning equipment. However, its requirements will not take effect until state regulators approve the ordinance.
In fall 2025, Glendale adopted an AC-to-heat-pump reach code. When homeowners replace or install an air conditioner, the ordinance requires a heat pump or an approved alternative: a new AC with efficiency upgrades.
A heat pump transfers heat to provide both heating and cooling. Unlike a conventional AC-only system, it can also heat the home. So, the city views heat pumps as an option for reducing gas heating use.
The adopted code covers single-family homes, duplexes, and townhomes. It addresses new air conditioning installations and alterations or replacements of existing systems. Commercial buildings are not covered by this particular ordinance.
However, ordinary AC repairs remain exempt. For example, repairing a failed component does not automatically trigger a heat pump requirement. The distinction between repair and replacement matters when planning the work.
The first path involves installing a heat pump as the home’s primary heating and cooling system. This approach replaces separate heating and cooling functions with one electric system. However, the equipment must suit the property’s heating and cooling needs.
The second path allows a new air conditioner with qualifying efficiency improvements. For example, those improvements may involve duct sealing, insulation, or system performance measures. The applicable requirements determine which improvements are necessary.
The reach code includes exceptions for certain electrical and equipment conditions. One applies when the existing electrical panel cannot support a heat pump sized for the home’s heating needs. Another addresses heat pumps oversized by more than 12,000 Btu/h relative to the existing system.
Also, specific duct sealing and airflow requirements have alternative compliance methods. Applicable California Energy Code exceptions remain relevant. Therefore, property conditions should be evaluated before selecting a compliance path.
Glendale adopted the ordinance in fall 2025, but adoption did not make it immediately enforceable. Its effective date depends on approval from the California Building Standards Commission and California Energy Commission. Until then, homeowners should check the city’s current status before planning replacements.
California HVAC replacements still require permits and applicable independent HERS/ECC verification. So, a replacement project needs proper planning regardless of the pending reach code. We recommend confirming equipment, electrical capacity, and permit requirements before committing to installation.
Programs can change — checked October 2026.
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Glendale, CA · Los Angeles County
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