Washington Heat Pump Rebates 2026 — Commerce, BPA Utilities, Seattle City Light, PSE

Washington’s rebate stack is genuinely different — here’s why

Washington homeowners shopping heat pumps in 2026 face a rebate landscape unlike California, New York, Massachusetts, or Texas. Not just different amounts — structurally different in ways that matter before you call a contractor.

Three overlapping systems create that difference. The first is the WA Department of Commerce Heat Pump Program, a state-funded initiative that uses revenue from Washington’s Climate Commitment Act cap-and-trade system to fund direct heat pump rebates. The Climate Commitment Act requires large industrial emitters to purchase allowances for greenhouse gas emissions, and the auction revenue gets reinvested into programs like this one. That’s a WA-specific funding stream that doesn’t exist in Texas (no state program at all), California (TECH Clean was utility-funded), or Massachusetts (utility-funded through the Three-Year Plan process).

The second is the Bonneville Power Administration (BPA). Most electric utilities in Washington — Snohomish County PUD, Clark PUD, Tacoma Power, Mason County PUD, and dozens of others — are public utility districts that buy their power wholesale from BPA, the federal agency that manages the Columbia River hydropower system. BPA maintains an Energy Efficiency Implementation Manual (EEIM) that sets standardized energy efficiency program structures for its utility customers across the Pacific Northwest. This creates a regional baseline: BPA-funded utilities tend to run rebate programs with similar structures, even if the specific dollar amounts differ between utilities. This regional architecture is specific to the Pacific Northwest and has no equivalent in any of the other states we’ve covered.

The third is a genuinely competitive municipal utility market in the Puget Sound corridor. Seattle City Light serves Seattle proper. Puget Sound Energy (PSE) — an investor-owned utility — serves a patchwork of Western Washington counties outside Seattle. Tacoma Power serves Tacoma. Each runs its own rebate program. The utility territory you’re in determines which program applies, and the boundaries are not always obvious from a street address.

Add federal HEEHRA administered through WA Commerce, and the full stack has more layers than most states — but only some of those layers are accessible to any given household. Which layers apply to you depends on your utility territory, your income, and the specific program’s current status. We’ll walk through all of them.

Important note on source availability: Primary sources for WA Commerce’s heat pump program, PSE, Seattle City Light, Snohomish PUD, and Tacoma Power all returned access errors (HTTP 404, geo-blocking, or connection timeouts) when we verified sources for this page in May 2026. Program figures below are drawn from publicly documented program structures and HUD AMI tables; verify current amounts and availability directly at each program’s URL before making any installation decision.

The programs, walked through one by one

WA Commerce Heat Pump Program

The WA Department of Commerce administers Washington’s state-level heat pump rebate program, funded through Climate Commitment Act auction revenues. This program is distinct from the federal HEEHRA funding stream — it’s state money with state-set rules.

The program targets low- and moderate-income households for heat pump installations in single-family homes. Exact current rebate amounts, income thresholds, and approved contractor requirements are set by Commerce and updated on their program page.

Important caveat: The WA Commerce heat pump program page (commerce.wa.gov/growing-the-economy/energy/heat-pump-program/) returned HTTP 404 during our May 2026 source verification. We cannot confirm current program status, dollar amounts, or enrollment status from the primary source. Verify directly at WA Department of Commerce before planning any installation around this program. Contact Commerce’s Energy Division at energy.commerce@commerce.wa.gov for current program status.

What we can say from public documentation: The program has been active in the 2024–2026 window as a CCA-funded initiative. It has historically targeted qualifying households and required installation through an approved contractor network. Whether it uses the same AMI tier structure as HEEHRA (≤80% for full coverage, 80–150% for partial coverage) or a different income threshold is something to verify directly — Commerce programs do not always mirror the federal HEEHRA framework exactly.

HEEHRA via WA Commerce

Washington was among the earlier states to operationalize its Inflation Reduction Act HEEHRA (Home Electrification and Appliance Rebates) allocation. WA Commerce administers the federal HEEHRA funding separately from its CCA-funded state program — meaning WA homeowners have two potential Commerce-administered programs to navigate, not one.

HEEHRA’s federal framework sets the income tier structure:

• Low-income tier (household at or below 80% of county AMI): Up to 100% of qualifying installation costs, up to $8,000 for a heat pump.
• Moderate-income tier (household between 80% and 150% of county AMI): Up to 50% of qualifying installation costs, up to $4,000.
• Above 150% AMI: No HEEHRA rebate for heat pumps (the equipment discount applies only to the lower tiers).

Source caveat: Commerce’s HEEHRA program page was inaccessible at time of writing. For current enrollment status, approved contractor lists, and whether additional WA-specific requirements apply, verify directly at WA Department of Commerce’s energy programs portal.

Bonneville Power Administration (BPA) — the regional layer

Most non-investor-owned utilities in Washington receive their power from BPA’s federal hydroelectric system on the Columbia and Snake rivers. This creates a structural feature that shapes the rebate landscape across the Pacific Northwest in a way that doesn’t exist in any other region of the country.

BPA maintains an Energy Efficiency Implementation Manual that provides guidance and, in some years, funding support for efficiency programs at its utility customers. BPA-funded utilities — Snohomish PUD, Clark PUD, Tacoma Power, Mason County PUD, Kittitas PUD, and many others — tend to run heat pump rebate programs with broadly similar structures: a per-unit rebate for qualifying equipment meeting minimum efficiency specifications, typically administered through registered contractor networks.

The key implication for homeowners: if your utility is a public utility district (PUD) that buys wholesale from BPA, there’s a good chance it runs a heat pump rebate program. The program amounts and qualifying equipment specs vary by utility, but the existence of a program is more predictable in PUD territory than in, say, rural Texas co-op territory.

For specific amounts: Contact your PUD directly. BPA itself does not administer individual homeowner rebates — the rebates flow through the local utility. Look up your utility at your monthly electric bill (public utility districts typically show “PUD” in the utility name). For Snohomish County customers, verify at snopud.com. For Clark County, at clarkpublicutilities.com. For Kittitas County, at kittitaspud.com.

Snohomish County PUD (SnoPUD)

Snohomish County PUD is one of the largest BPA-served utilities in Western Washington, covering Snohomish and Island counties north of Seattle. SnoPUD historically runs residential heat pump rebate programs for qualifying air source and ground source systems, typically structured as per-unit flat rebates for equipment meeting minimum HSPF2 or SEER2 thresholds.

Source caveat: SnoPUD’s rebate pages were inaccessible (HTTP 404) at time of May 2026 verification. Verify current amounts, qualifying equipment specifications, and contractor enrollment requirements directly at snopud.com or by calling 425-783-1000.

Tacoma Power

Tacoma Power serves Tacoma and surrounding Pierce County areas as a municipal utility. Like other BPA-connected utilities, Tacoma Power has historically run heat pump incentive programs for residential customers.

Source caveat: Tacoma Power’s rebate page timed out during verification. Verify at tacomapower.com or call 253-502-8600.

Puget Sound Energy (PSE)

PSE is Washington’s main investor-owned utility (IOU), serving customers in a patchwork of Western Washington counties — parts of King, Snohomish, Kittitas, Whatcom, Skagit, and other counties. The critical geographic nuance: PSE’s territory and Seattle City Light’s territory overlap in the greater King County region but do not overlap with each other. If you’re in Seattle city limits, you’re a City Light customer. If you’re in Bellevue, Redmond, Kirkland, Kent, Federal Way, or Renton, you’re likely a PSE customer (though specific parcels vary — verify via PSE’s service territory map).

PSE, as an investor-owned utility, operates differently from BPA-funded public utility districts. It has historically run its own heat pump rebate programs independent of BPA’s EEIM structure. PSE’s program page was geo-blocked during our May 2026 verification. Verify current rebate amounts and qualifying equipment directly at pse.com or by calling 1-888-225-5773.

Seattle City Light

Seattle City Light is Seattle’s municipal utility, owned and operated by the City of Seattle. It serves Seattle city limits only — this boundary matters more than it might seem. Residents of unincorporated King County or suburban cities immediately adjacent to Seattle are in PSE territory, not City Light territory, even if they live a few blocks from the city line.

Seattle City Light has been among the more active municipal utilities nationally on heat pump promotion, historically running rebate programs for heat pump upgrades as part of the city’s climate goals. The specific rebate structure, amounts, and qualifying equipment are published on the Seattle.gov City Light conservation pages.

Source caveat: The City Light heat pump conservation page (seattle.gov/city-light/residential-services/conservation/heat-pumps) returned HTTP 404 during verification. Verify current programs directly at seattle.gov/city-light or call 206-684-3000.

Avista Utilities (Eastern WA)

Avista serves Eastern Washington — including Spokane, the Palouse, and surrounding areas — as an IOU. Avista operates in the colder climate zones (5B and higher) and has historically run heat pump rebate programs for residential customers. Verify current Avista rebate amounts and qualifying equipment at myavista.com/energy-savings/rebates-washington.

Federal 25C — expired for 2026

The IRS Energy Efficient Home Improvement Credit (Section 25C) allowed homeowners to claim up to $2,000 per year for qualifying heat pump installations. The credit was nonrefundable and required equipment meeting the CEE (Consortium for Energy Efficiency) highest efficiency tier.

The credit expired on December 31, 2025. For 2026 installations, there is no 25C credit available. If you installed a qualifying heat pump in 2023, 2024, or 2025, you can still claim the credit on the relevant year’s return. For 2025 installations, you must include the Qualified Manufacturer Identification Number (QMID) on your return.

Incentive stack table

Worked example: Seattle metro middle-income household

Scenario: A homeowner in Seattle’s Capitol Hill neighborhood, in Seattle City Light territory. Household of four, income of $130,000. Replacing a gas furnace and central AC with a 30k BTU multi-zone heat pump in a 1,600 sq ft craftsman bungalow.

AMI calculation (required):

King County falls within the Seattle-Bellevue, WA HUD Metro FMR Area. Per HUD’s FY2024 Income Limits tables (huduser.gov/portal/datasets/il.html), the 4-person median family income for King County is approximately $140,000–$145,000. We’ll use $142,000 as a representative midpoint. (HUD updates these annually — verify the current year’s figure at huduser.gov before applying to any income-tested program.)

• 4-person AMI (HUD 2024, King County / Seattle metro): approximately $142,000
• 80% threshold: 0.80 × $142,000 = approximately $113,600
• 150% threshold: 1.50 × $142,000 = approximately $213,000

A $130,000 household income sits between the 80% threshold ($113,600) and the 150% threshold ($213,000), placing this household at approximately 92% of AMI — the moderate-income tier (80–150% AMI) under HEEHRA’s framework.

Available incentives in May 2026:

• Federal 25C: $0 — credit expired December 31, 2025.
• WA Commerce HEEHRA (moderate-income tier, 80–150% AMI): This household qualifies for the HEEHRA moderate-income tier at ~92% AMI. Under the federal HEEHRA framework, moderate-income tier covers 50% of qualifying installation costs, up to approximately $4,000 for a heat pump. However, because WA Commerce’s HEEHRA program page was inaccessible at time of writing, we cannot confirm current enrollment status, any per-period funding caps, or whether an approved vendor list applies. Verify directly at WA Department of Commerce. If the program is active and accepting applications, $4,000 is a realistic moderate-income HEEHRA amount.
• WA Commerce CCA-funded program: If this household’s income qualifies for the state program (thresholds differ from HEEHRA — verify at Commerce), there may be additional state dollars available. Cannot confirm current amounts from inaccessible primary source.
• Seattle City Light heat pump rebate: Seattle City Light has historically offered rebates for qualifying heat pump installations for all income levels, not just low-income households. Because the City Light program page was inaccessible at time of writing, we cannot confirm current amounts. Verify directly at seattle.gov/city-light or call 206-684-3000. For planning purposes, municipal utility rebates for qualifying heat pump installations in Western Washington have historically been in the $500–$2,000 range — but confirm before counting on this.

Net cost after confirmed rebates:

An install estimate for a 30k BTU multi-zone system in Seattle — including labor, permits, and any required electrical upgrades — runs roughly $12,000–$18,000, depending on the number of zones and wall configuration. We’ll use $15,000 as a midpoint.

• Install cost: $15,000 (midpoint estimate)
• Federal 25C: $0 (expired)
• HEEHRA moderate-income tier (if program active and enrolled): −$4,000
• Seattle City Light rebate (verify — amounts unconfirmed): −$500–$2,000 (range)
• Out-of-pocket range with both programs active: approximately $9,000–$10,500

The practical takeaway: This household’s stack depends almost entirely on whether WA Commerce’s HEEHRA program is actively enrolling. Verify that before signing any contractor agreement. Seattle City Light’s rebate is a useful add-on but not the primary lever. The AMI math confirms this household is solidly in the moderate-income tier — don’t assume you’re above the HEEHRA income ceiling just because you’re in an expensive metro.

Worked example: Eastern WA low-income household

Scenario: A homeowner in Spokane Valley, Spokane County, in Avista Utilities territory. Household of four, income of $55,000. Replacing a failing electric resistance baseboards with an 18k BTU cold-climate heat pump in a 1,100 sq ft 1960s ranch home.

AMI calculation (required):

Spokane County falls within the Spokane-Spokane Valley, WA HUD Metro FMR Area. Per HUD’s FY2024 Income Limits tables (huduser.gov/portal/datasets/il.html), the 4-person median family income for Spokane County is approximately $84,000–$86,000. We’ll use $85,000 as a representative midpoint.

• 4-person AMI (HUD 2024, Spokane County): approximately $85,000
• 80% threshold: 0.80 × $85,000 = approximately $68,000
• 150% threshold: 1.50 × $85,000 = approximately $127,500

A $55,000 household income sits below the 80% threshold ($68,000), placing this household at approximately 65% of AMI — the low-income tier (≤80% AMI) under HEEHRA’s framework.

Available incentives in May 2026:

• Federal 25C: $0 — credit expired December 31, 2025.
• WA Commerce HEEHRA (low-income tier, ≤80% AMI): A household at ~65% AMI qualifies for the HEEHRA low-income tier — 100% of qualifying installation costs, up to approximately $8,000 for a heat pump. For an 18k BTU cold-climate single-zone system with installation, the full $8,000 coverage could make the installation essentially free or very low cost. Verify directly at WA Commerce — the program page was inaccessible at time of writing, and enrollment status is unconfirmed. If the program is active, this is the most important dollar in the stack for this household.
• WA Commerce CCA-funded state program: State program income thresholds may align with HEEHRA’s low-income tier. If so, and if the programs don’t overlap on the same installation, this could add additional dollars on top of HEEHRA. Verify at Commerce for stacking rules.
• Avista Utilities rebate: Avista serves Spokane Valley and the broader Eastern WA region and has run heat pump rebate programs for residential customers. Because myavista.com/energy-savings/rebates-washington redirected during verification and specific page content was unavailable, we cannot confirm current amounts. Verify at myavista.com or call 800-227-9187. Avista has historically offered flat per-unit rebates for qualifying heat pumps, typically in the $300–$1,000 range for air source systems, with cold-climate specifications required for higher tiers.

Net cost with confirmed HEEHRA + Avista:

A typical 18k BTU cold-climate mini-split installation in Spokane — including unit, labor, and permits — runs approximately $5,000–$9,000. We’ll use $7,000 as a midpoint.

• Install cost: $7,000 (midpoint estimate)
• Federal 25C: $0 (expired)
• HEEHRA low-income (if active): up to −$7,000 (full coverage to $8,000 cap; actual $7,000 job = full coverage)
• Avista rebate (verify — amounts unconfirmed): additional reduction
• Out-of-pocket if HEEHRA active: approximately $0 (below the $8,000 cap)

The critical climate note for Eastern WA: Spokane’s design temperature is around 0°F to −5°F, with multi-day cold snaps to −10°F in severe winters. A standard mini-split rated only to 5°F would struggle on Spokane’s worst nights. Verify that the equipment you’re considering is cold-climate rated with stated performance down to at least −13°F (−25°C). Cold-climate certification is also often required to unlock higher rebate tiers with utilities like Avista — check the qualifying equipment specification from the program before purchasing.

Eligibility gotchas specific to Washington

BPA utility customers have standardized programs but separate enrollment. The fact that Snohomish PUD, Tacoma Power, and Clark PUD all draw on BPA’s EEIM structure doesn’t mean they share a rebate application. Each utility runs its own enrollment process, its own contractor registration, and its own funding cycle. A contractor registered with Snohomish PUD is not automatically registered with Tacoma Power. If you move from Snohomish County to Pierce County and try to use the same contractor, confirm they’re registered in Tacoma Power’s program. The structural similarity across BPA utilities doesn’t mean administrative interoperability.

Seattle City Light is city-limits only. The City Light service area ends at Seattle’s municipal boundary. Residents of Shoreline (immediately north of Seattle), Renton, Tukwila, Burien, SeaTac, and Mercer Island — all adjacent to or surrounded by Seattle — are in PSE territory, not City Light territory. The rebate programs are completely different. If you’re on the King County periphery and unsure which utility serves your address, call 206-684-3000 (City Light) and ask, or enter your address at Seattle City Light’s service address lookup tool. Don’t assume you’re in City Light territory because you have a Seattle mailing address — boundaries don’t follow zip codes.

PSE serves a patchwork, not all of King County. Puget Sound Energy’s Western Washington footprint is extensive but fragmented. Within King County alone, PSE serves Bellevue, Redmond, Kirkland, Kent, Federal Way, and Auburn — but not Seattle proper (City Light), not most of Tacoma (Tacoma Power), and not Snohomish County’s denser areas (Snohomish PUD). PSE also serves chunks of Kittitas, Whatcom, Skagit, and Thurston counties. Verify your utility via PSE’s service territory tool at pse.com before assuming PSE or non-PSE status.

WA Commerce HEEHRA and the CCA state program may have separate approved vendor requirements. Washington’s HEEHRA program, like other state-administered HEEHRA programs, requires installation through an approved contractor network. The CCA-funded state program may have its own approved vendor list — which may or may not overlap with the HEEHRA list. Before hiring any contractor, confirm they’re approved under both programs if you intend to stack them. A contractor approved only for one program can generate only one rebate.

Cold-climate equipment specifications are non-negotiable in Eastern WA. For Avista territory (Spokane, Yakima, Walla Walla) and higher-elevation areas, utilities typically require cold-climate certification as a condition for the higher rebate tiers. HSPF2 minimums (often 7.5+ HSPF2 for standard tier, 9.0+ for cold-climate tier) are commonly required. Verify the current qualifying equipment specifications from each program before purchasing equipment — cold-climate certifications are tracked by the Northwest Energy Efficiency Alliance (NEEA) and equipment must be on the qualifying product list.

Eastern WA design temperatures require genuinely different equipment. Spokane’s 99% design heating temperature is approximately 0°F to −2°F. The Cascade mountain passes and elevations above 3,000 feet see sustained periods at −10°F or colder. A mini-split rated only to 5°F operation will not maintain full heating capacity on Spokane’s coldest nights without supplemental resistance heat. For climate zone 5B and 6B applications, confirm that the manufacturer’s rated capacity at −13°F (−25°C) meets your heating load before purchasing.

Eligible product picks by Washington climate zone

Washington’s climate divides sharply at the Cascade Range. Western Washington (Seattle, Olympia, Bellingham, the coast) is zone 4C — the oceanic/marine classification, with mild, wet winters. Eastern Washington (Spokane, Yakima, the Palouse) is zone 5B — semi-arid continental, with real cold. The Cascade Range itself, and communities like Leavenworth, Cle Elum, or Snoqualmie Pass, reach zone 6B.

Seattle metro and Western WA coast (zone 4C) — mild marine climate

Western Washington’s marine climate is one of the most favorable in the country for standard heat pump operation. Sea-level Seattle rarely drops below 25°F, and sustained subfreezing spells are unusual. The dominant heating challenge is damp, cloudy winters in the low 40s — exactly the operating range where inverter-driven heat pumps run at peak efficiency.

For a Seattle-area whole-home retrofit or a single-zone addition, the Mr Cool DIY 24k covers 700–1,000 sq ft in this mild climate. The pre-charged line set design means a licensed electrician can complete the refrigerant connection without a specialty refrigerant technician, which matters in a dense urban market where labor costs are high.

Eastern WA / Spokane area (zone 5B) — cold winters, real design temperatures

Spokane’s climate is a different engineering problem. Design temperatures for Spokane hit 0°F to −5°F, and cold snaps to −10°F occur in most decades. Standard mini-splits with capacity ratings that drop off sharply below 17°F will run their backup resistance elements extensively on the coldest nights, which erases much of the efficiency advantage.

For a Spokane-area bedroom, home office, or single-zone application, the Mr Cool Hyper 18k is built for this operating range, with manufacturer-rated heating performance at −13°F. This is the appropriate specification for the Spokane Valley, Yakima, and surrounding zone 5B communities — not a cold-climate upgrade for marketing purposes, but genuinely necessary equipment sizing for the actual design temperatures.

Cascade Range and mountain elevations (zone 6B) — whole-home in severe cold

Communities at or above 3,000 feet in the Cascades — Leavenworth, Cle Elum, Ellensburg, Winthrop — see sustained cold that requires whole-home system sizing at the highest cold-climate specifications. Zone 6B design temperatures can reach −10°F to −15°F. For a multi-zone whole-home conversion at Cascade elevations, the Mr Cool DIY 36k provides the BTU capacity for a 1,400–2,000 sq ft home, though we’d strongly recommend pairing it with a cold-climate-certified outdoor unit (Mitsubishi Hyperheat, Bosch, or Mr Cool Hyper series for zones this severe) rather than relying on a standard inverter unit. The 36k class is primarily recommended as a capacity reference for multi-zone whole-home configurations in this zone.

What changes after mid-2026

Washington’s Climate Commitment Act is the state’s most durable heat pump funding source. CCA auction revenues are generated on an ongoing basis as the cap-and-trade program runs through multi-year cycles, with a new revenue tranche expected for 2027. The heat pump program at WA Commerce is funded from this revenue, which means its longevity is tied to CCA’s continued operation rather than to a one-time legislative appropriation. As long as the CCA runs, there’s a predictable funding renewal mechanism for state heat pump programs.

The HEEHRA federal funding through WA Commerce is a finite pool allocated from the Inflation Reduction Act. Enrollment windows, approved contractor lists, and available funds can shift as the state progresses through its allocation. Check the WA Commerce program page semi-annually — funding can open and close within weeks when a new tranche becomes available.

For individual utility programs: BPA-funded utilities review their efficiency incentive budgets annually. PSE, Avista, and Seattle City Light adjust rebate amounts and qualifying equipment lists at their own program cycles, which don’t always align with calendar year boundaries. Check your utility’s rebate page before any installation — historical amounts are a planning guide, not a guarantee of what you’ll find when you apply.

Related

Tools and guides:

• BTU sizing calculator — size the system before specifying any equipment; Washington’s split between mild zone 4C maritime and cold zone 5B/6B east of the Cascades makes BTU sizing climate-zone sensitive.
• DIY mini-split installation guide — step-by-step on the install process for permit-eligible systems.
• Federal heat pump rebates — 25C history and the 2025 cutoff; how the federal pool stacked with WA programs while it was active.

Other state rebate pages:

• California heat pump rebates — TECH Clean’s funding-cap situation, SMUD’s Contractor Network, EBD Direct Install — the West Coast policy neighbor.
• Massachusetts heat pump rebates — Mass Save’s $10k whole-home tier and Home Energy Assessment gate; the closest cold-climate program peer.
• New York heat pump rebates — NY Clean Heat’s seven-utility administration model and EmPower+ for low-income.
• Texas heat pump rebates — Austin Energy’s published tiers, SECO HEAR planning status, deregulated-market mechanics.

Frequently asked questions

Does the WA Commerce program stack with my utility rebate?

Generally yes — state-funded rebates from WA Commerce (both the CCA-funded program and HEEHRA) are designed to stack with utility rebates. In states where HEEHRA is active, the standard stacking structure is: HEEHRA covers a percentage of installation cost up to the program cap, and utility rebates apply to the remaining balance. However, stacking rules can have specific exclusions — some programs prohibit double-dipping on the same installation cost. Confirm the current stacking rules at WA Commerce before assuming both programs apply independently.

How do I know if I’m in BPA utility territory?

Most Washington customers outside of Seattle proper and the major IOU service areas (PSE for Western WA suburbs, Avista for Eastern WA) are in BPA-served PUD territory. The simplest way to find out: look at your monthly electric bill. If it says “PUD” in the utility name — Snohomish County PUD, Clark Public Utilities, Kittitas PUD, Mason County PUD, Grays Harbor PUD, Pacific County PUD, and dozens of others — you’re almost certainly in BPA-funded public utility territory. You can also search the Washington Utilities and Transportation Commission’s utility service territory database to confirm your exact utility by address.

What if I’m in the Seattle metro but not sure whether I’m in City Light or PSE territory?

The boundary runs along Seattle’s city limits, which are detailed enough that houses on the same block can be in different utility territories in some areas. The fastest confirmation: call Seattle City Light at 206-684-3000 and provide your address. They’ll confirm whether you’re in their service area. Alternatively, PSE’s website has a service area lookup. Don’t assume based on your city name or mailing address — “Seattle” addresses in some zones like unincorporated King County are PSE customers. Getting this wrong means applying to the wrong rebate program.

Does the Climate Commitment Act funding affect program longevity?

Yes, and favorably. Most state heat pump programs are funded from one-time legislative appropriations that run dry and require reauthorization. Washington’s CCA-funded programs draw on a recurring revenue stream — auction proceeds come in with each auction cycle as long as the cap-and-trade system operates. This doesn’t guarantee the programs will exist indefinitely, but it makes them structurally more durable than single-tranche programs. The CCA has survived legal challenges and is expected to run through at least the 2027 budget cycle.

Can I stack WA Commerce HEEHRA with the WA Commerce CCA-funded state program?

Potentially, but this is the most important question to verify directly with WA Commerce. The two programs draw on different funding sources (federal IRA vs. state CCA revenue) and have separate administration. In principle, a household could receive HEEHRA funds for their income-tier share of the installation and then access state CCA-funded support for an additional component. In practice, Commerce may have stacking rules that limit overlap or require separate project components (e.g., water heater vs. heat pump HVAC). Get written confirmation from Commerce’s Energy Division before planning your project budget around both.