Washington HVAC leads

How Washington homes are heated

Washington owner-occupied homes divide between electricity and utility gas, with a tail of propane, wood and oil behind them. The Census Bureau’s table B25117 (ACS 5-year 2020-2024) counts 924,983 electric-heated owner homes (47.3%) and 827,193 on utility gas (42.3%) among 1,954,777. Propane and wood each heat close to 4%, and fuel oil another 1.7%.

With renters included, electricity heats 58.6% of the state’s 3,064,820 occupied homes in table B25040 (2020-2024 ACS). The fuel tells a buyer what is in the basement or the closet: an electric furnace, baseboard heat or a heat pump in one home, a gas furnace in another, and in others a wood stove or an oil furnace. It is a description of the housing, not of where service requests come from.

Washington HVAC contractor licensing

Washington regulates the electrical side of heating and cooling work through specialty electrical licenses and certificates administered by the Department of Labor and Industries. WAC 296-46B-920 (checked October 8, 2026) sets out two HVAC/refrigeration specialties:

• HVAC/refrigeration (06A): not limited by voltage, phase or amperage. It covers low-voltage control wiring in all residential occupancies and line voltage components inside HVAC/refrigeration equipment, but not line voltage disconnects or controllers mounted outside the equipment, apart from a like-for-like swap during equipment replacement.
• HVAC/refrigeration restricted (06B): the same kind of work, but not where the primary electrical connection to the system exceeds 250 volts single phase or 120 amps.

The rule also bars an unsupervised electrical trainee from working on any part of an HVAC/refrigeration system with a circuit rated over 600 volts. Separately, the federal rules in EPA Section 608 require certified technicians for refrigerant handling. General contractor registration in Washington is covered on the window replacement page linked below.

Washington heat pump and electrification rebates

Washington runs two rebate tracks through its Department of Commerce. The state Home Electrification and Appliance Rebates program (page updated September 8, 2026) funds third-party administrators that offer rebates on high-efficiency electric equipment and appliances, paid for by the state’s Climate Commitment Act. Commerce posts each local administrator as its contract is finalized.

The federal IRA Home Energy Rebates (page updated June 15, 2026), the HOMES and HARP programs, list heat pumps, ventilation and panel upgrades among covered measures. Commerce shows them at the program operation preparation step, ahead of launch approval from the U.S. Department of Energy, and says it is reviewing DOE program updates issued June 1. This page states no rebate amounts.

Reading the Washington numbers for an HVAC plan

The Washington figures add up to a heating-led market with mixed fuels. For a buyer, three points stand out:

• Heating carries the year. 5,191 heating degree days against 295 cooling degree days in 2025, in the NCEI series, put furnace, boiler and heat pump heating work ahead of air conditioning.
• No single fuel wins. At 47.3% electric and 42.3% utility gas in the 2020-2024 ACS, a statewide buyer needs crews for both, and about 9% of owner homes burn propane, wood or oil.
• County lines change the mix. Spokane and King lean gas, Benton and Yakima lean electric, and Whatcom has the most propane, so a ZIP code list can follow a buyer’s equipment skills.

These are readings of official housing and climate data. They do not estimate how many Washington homeowners seek HVAC work.