Guide · 8 min read · Updated 2026-04-27
Washington HVAC Rebates & Incentives Guide (2026)
Washington homeowners can stack utility rebates, a state sales tax exemption, and income-qualified HEAR rebates. Do not count the expired federal 25C credit for current installs.
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The rebate stack: how it works
Washington is one of the best states in the country for HVAC incentives. Unlike most states where you pick one program, WA lets you combine multiple incentives on the same project. Here's the full stack available to most homeowners:
- Utility rebate: $1,500–$5,000 (varies by provider — PSE, Avista, Tacoma Power, SnoPUD, Clark PU)
- WA sales-and-use tax exemption on qualifying heat pump equipment and labor: roughly 6.5–10.4% depending on local rate (SB 5672, exemption in effect through December 31, 2029)
- IRA HOMES rebate: $4,000–$8,000 for income-qualified households (point-of-sale discount)
Utility rebate programs by provider
Your rebate amount depends on which utility serves your address. Here are the major programs:
- Puget Sound Energy (PSE): $1,500–$4,000 for heat pumps, $800–$2,500 for ductless, $400–$800 for high-efficiency furnaces. Serves King, Kitsap, Pierce, Thurston, Whatcom counties.
- Avista Utilities: $1,000–$3,500 for heat pumps, $600–$2,000 for ductless. Serves Spokane, Pullman, eastern WA.
- Tacoma Power: $2,000–$5,000 for heat pump conversions (most generous in the state). Income-qualified up to $10,000. Serves Tacoma.
- Snohomish PUD: $1,500–$4,000 for heat pumps. Serves Everett, Lynnwood, Marysville, Snohomish County.
- Clark Public Utilities: $1,200–$3,500 for heat pumps. Serves Vancouver, Battle Ground, Camas.
Federal 25C credit status
Current IRS guidance says the Energy Efficient Home Improvement Credit is not available for property placed in service after December 31, 2025. For 2026 Washington projects, budget this line as $0 unless a qualified tax professional confirms your project qualifies under older placed-in-service rules.
WA sales tax exemption on heat pumps
Washington has no income tax but charges 6.5% state sales tax, layered with local add-ons that push the combined rate to roughly 7.0–10.4% depending on city. Under SB 5672 (2022), qualifying air source heat pump equipment and the labor to install it are exempt from sales-and-use tax through December 31, 2029. On a $10,000 heat pump installed in Seattle (about 10.35% combined), you'd save roughly $1,035. Your contractor should apply the exemption at the point of sale — if they don't, ask them to look up the WA DOR guidance on heat-pump exemption. The exemption applies to ENERGY STAR certified air source heat pumps only (not gas furnaces or stand-alone AC).
IRA HOMES rebates (income-qualified)
The High-Efficiency Electric Home Rebate Act provides point-of-sale rebates for low-to-moderate income households (at or below 150% of area median income). In Washington, this program is administered by the Department of Commerce. Eligible households may receive up to $8,000 for heat pump installation — applied as a discount at the time of purchase, not a tax credit. This is the most generous single incentive but has income limits and local administrator rules.
Example: total savings in Seattle
Here's what a typical Seattle homeowner could save on a $10,000 heat pump installation:
- PSE utility rebate: $3,000 (mid-range for high-efficiency unit)
- WA sales tax exemption: $1,035 (about 10.35% on $10,000)
- Total savings before income-qualified HEAR: $4,035
- Net cost before income-qualified HEAR: $5,965 for a premium heat pump system
How to claim your rebates
The process varies by incentive type:
- Utility rebates: Most require pre-approval. Apply BEFORE installation through your utility's website. Some offer instant rebates through participating contractors.
- Federal 25C: Do not count current savings unless a tax advisor confirms a qualifying pre-2026 placed-in-service date.
- WA sales tax exemption: Applied automatically by your contractor at point of sale. If they charge you tax on a qualifying heat pump, dispute it.
- IRA HOMES: Applied at point of sale through participating contractors. Check WA Commerce Department for approved installers.
Tips to maximize your savings
A few strategies to get the most from available incentives:
- Choose a cold-climate rated heat pump — higher-tier equipment qualifies for higher utility rebates
- Get pre-approved by your utility BEFORE scheduling installation
- Ask your contractor if they're a participating installer for IRA HOMES rebates
- If you're near the income limit for HOMES rebates, check — the AMI thresholds are generous in many WA counties
- Combine with insulation/weatherization — PSE and others offer separate rebates for air sealing and insulation that further reduce your heating load
- Confirm incentive eligibility in writing before install; many rebates require pre-approval.