Washington HOA heat pump rights

Washington names heat pumps specifically, which is unusual. On property you own, an HOA cannot prohibit or unreasonably restrict a heat pump, whether it is an air source unit, a ground source system, or a mini-split. A blanket ban on exterior mechanical equipment cannot be used to block one.

The reach of the rule changed at the start of 2026. Heat pump protection used to sit in an older statute that applied only to some associations; as of January 1, 2026, it lives in WUCIOA and covers every Washington common interest community. The association keeps reasonable control over placement, screening, and noise, but not the power to say no outright.

If you want to electrify heating, read these before you make an offer:

• Any blanket ban on exterior HVAC or mechanical equipment, which cannot block a protected heat pump.
• Placement, screening, or noise standards, and whether they effectively prevent an install.
• Whether the home already has a heat pump and whether it was approved.
• Board minutes for any heat pump or HVAC dispute.

Heat pumps are central to how many Washington buyers plan to heat, cool, and cut energy costs, and the law protects them by name. A rules document that still bans all exterior equipment is out of step with the current statute.

An HOA Notes brief reads the architectural rules against the heat pump protection, flags a blanket ban that cannot stand, and cites the page behind each finding.

Washington Revised Code 64.90.580 (Heat pump installation rights). An association cannot prohibit an owner from installing a heat pump on individually owned property; heat pumps (including air source, ground source, and mini-split systems) are explicitly protected under WUCIOA (RCW 64.90.580), which since January 1, 2026 governs all Washington common interest communities for this purpose (the former RCW 64.38.180 was repealed on that date); this protection reflects Washington's clean energy policy encouraging electrification of heating. The association may impose reasonable restrictions on the placement, screening, and noise standards for heat pump equipment on owner-controlled property; it may require that exterior equipment meet reasonable aesthetic standards provided it does not effectively prohibit installation.

When you read the disclosure packet, watch for no exterior HVAC units or mechanical equipment on any lot or exterior wall, all HVAC equipment requires prior written ARC approval and may be denied, and no modifications to rooflines or exterior walls without consent. HOA Notes flags each of these against the statute and tells you which restrictions are actually enforceable.