Quick answer
If you live in Seattle City Light's service territory, you can combine several incentives in 2026 to lower the cost of upgrading to electric heating, cooling, and water heating — instant heat pump discounts of $300–$600, up to $6,000 off an oil-to-heat-pump conversion through Seattle's Clean Heat program, a $750 heat pump water heater rebate, and $50-per-unit smart thermostat rebates for electric baseboard homes. Income-qualified households may get a free conversion.
- Heat pump systems: $300–$600 in instant City Light savings, applied through your contractor's bid and invoice.
- Oil-to-heat-pump conversions: up to $6,000 through Seattle's Clean Heat program ($2,000 instant + $4,000 income-qualified bonus for installs completed by September 30, 2026).
- Heat pump water heaters: a $750 City Light rebate, with three ways to claim it.
- Smart thermostats for electric baseboard heat: $50 per unit, up to 5 units, through December 31, 2026.
- Income-qualified households: may qualify for a free heat pump conversion through Seattle's HomeWise / Office of Housing programs, plus state HEAR rebates through a local administrator.
- Important 2026 change: the federal 25C heat pump tax credit ($2,000) expired December 31, 2025 and is not available for 2026 installations — any page still advertising it is out of date. Washington's incentives below are still active.
What rebates are available through Seattle City Light in 2026?
Four programs are active right now for City Light customers: instant contractor discounts of $300–$600 on qualified heat pump systems, a $750 heat pump water heater rebate, $50-per-unit smart thermostat rebates for line-voltage electric heat, and — through the City's separate Clean Heat program — a $2,000-to-$6,000 instant rebate for switching off oil heat. Most of these are delivered as instant discounts through participating distributors and passed through by your contractor, so you see the savings on your bid and invoice rather than filing paperwork and waiting for a check. Eco applies eligible discounts directly to your invoice and handles the rebate paperwork wherever possible.
How much can you save switching from oil heat in Seattle?
Up to $6,000. If your Seattle home currently heats with oil, the City's Clean Heat program (run by the Office of Sustainability & Environment, not City Light directly) offers a $2,000 instant rebate when you switch to a qualified electric heat pump — currently a qualifying Mitsubishi system installed by a participating contractor — plus a $4,000 bonus for moderate-income households earning 81%–150% of Area Median Income. Bonus rebates apply to installations completed by September 30, 2026, subject to funding. Households below the moderate-income floor may qualify for a free conversion through the Seattle Office of Housing instead. Seattle still has an estimated 8,000–10,000 oil-heated homes, and the City's program materials note that switching typically cuts annual heating costs by more than 50% while adding air conditioning.
How do the heat pump water heater rebates work?
City Light offers $750 toward a qualified heat pump (hybrid) water heater, and there are three ways to claim it: through a contractor as an instant discount from a participating distributor passed through on your invoice; as a DIY instant digital coupon redeemable at participating Home Depot or Lowe's stores in the Puget Sound area; or as a DIY post-purchase rebate paid directly by City Light when you buy a qualified unit from another supplier and self-install. The unit must be ENERGY STAR rated and a Tier 3 or Tier 4 model on City Light's qualified product list. For the post-purchase rebate, submit the online form with your retail invoice within 93 days of purchase — one rebate per customer, and units already discounted through the Home Depot/Lowe's coupon aren't eligible for the additional rebate.
What if you're income-qualified?
Two paths can dramatically reduce — or eliminate — your out-of-pocket cost. First, Seattle's HomeWise Weatherization Program (Office of Housing) can provide income-eligible households a free heating and cooling system plus insulation upgrades, including free oil-to-heat-pump conversions within city limits. Second, Washington's state HEAR program (Dept. of Commerce, funded by the Climate Commitment Act) offers point-of-sale rebates for households at or below 150% of Area Median Income through local program administrators — under the federal rebate framework Washington follows, program maximums run up to $8,000 for a heat pump, $1,750 for a heat pump water heater, and $4,000 for a required electrical panel upgrade, though exact amounts depend on your local administrator and available funding. Equipment must be ENERGY STAR or AHRI certified, and income-qualified households can often stack state HEAR with utility rebates. Eco can help you check King County income limits and confirm eligibility at your estimate.
Do I need an electrical panel upgrade before going electric?
Often, no — and a bid that assumes a panel upgrade without measuring your home's actual load deserves a free second opinion before you pay for it. Code-minimum load calculations under the NEC are deliberately conservative: they stack nameplate ratings as if far more of the house runs at once than ever really does, so on paper a 100-amp panel looks full while the meter says otherwise. Large utility load studies bear this out — Peninsula Clean Energy, a California power agency, analyzed hourly usage across hundreds of thousands of customer accounts and found that 99% of 722 all-electric single-family homes never drew more than 100 amps at any hour of the year, with the most common peak around 29 amps, and its nine-home whole-home electrification pilot completed every conversion without a single service upgrade. That's California data — treat it as directional for Puget Sound homes, not a local statistic — but it's exactly why Eco measures your panel's real load before quoting an upgrade. The honest flip side: homes on 60-amp service, fuse boxes or knob-and-tube-era wiring, and projects adding an EV charger, heat pump, and electric range all at once often do need one — and when a panel upgrade is genuinely required for electrification, the HEAR/HARP framework includes up to $4,000 in panel support for income-qualified households.
Do these rebates apply in Everett or Mount Vernon?
Not directly — Seattle City Light only serves the City of Seattle. If you're outside city limits, your own utility offers its own programs. In Everett and most of Snohomish County, Snohomish County PUD pays $1,800 for a qualifying ducted heat pump conversion and $2,500 for an inverter-driven ducted heat pump, applied instantly by a PUD-registered contractor. In the Mount Vernon area and for PSE customers, Puget Sound Energy rebates run roughly $1,500–$4,000 depending on your current fuel, equipment, and income — including a $2,400 income-qualified Efficiency Boost tier and up to $4,000 for income-qualified gas-to-heat-pump conversions, with a PSE Trade Ally or Recommended Energy Professional contractor required. Eco serves all three regions and processes rebates for each utility — tell us your address and we'll confirm what you qualify for.
What about the federal tax credit?
The federal 25C tax credit for heat pumps ($2,000) and 25D for geothermal (30%) both ended December 31, 2025. If you completed and placed a heat pump in service by that date, you can still claim it on your 2025 return (IRS Form 5695), but for 2026 installations no federal residential heat pump tax credit currently exists. Washington's federally funded HARP rebate program (the Home Appliance Rebate Program under the IRA Home Energy Rebates, with point-of-sale rebates up to $8,000 for a heat pump) is in the final stage of U.S. Department of Energy approval but is not yet open to applications — and Commerce says you must apply and be approved before buying equipment, so it will not pay retroactively. Don't factor it into a 2026 budget until it launches.
How it works
Heat pump instant discounts: how the $300–$600 is set
City Light's discount is tiered by efficiency for qualifying air-source heat pumps under 5.4 tons: $300 for HSPF2 8.1 or higher (SEER2 15.2), $400 for HSPF2 8.5 or higher, and $600 for HSPF2 9.5 or higher (SEER2 16.0). Discounts flow through participating distributors to your contractor, and do-it-yourself installations aren't eligible. Ask your contractor to itemize the City Light incentive as a separate line item on your estimate — Eco does this by default so you can see exactly what you're getting.
Smart thermostats for electric baseboard heat
If your home uses line-voltage electric heat — baseboard, fan-forced in-wall, self-contained hydronic baseboard, or in-ceiling radiant — City Light offers a $50 instant rebate per qualifying smart thermostat (currently Mysa and Sinopé models), up to 5 units per customer, through December 31, 2026, subject to funding. The purchase must be made online through the retailer's website. Homes with gas heat should check Puget Sound Energy's rebates instead — City Light's thermostat rebate only applies to electric heating controlled by a line-voltage thermostat.
Insulation, weatherization & windows
Weatherization pairs well with a heat pump install: the EPA estimates air sealing plus attic, floor, and crawlspace insulation can cut heating and cooling costs by about 15%, and a tighter envelope lets your new system be sized smaller and run cheaper. In Seattle, income-eligible households can get insulation and air-sealing work done free through the HomeWise Weatherization Program, and high-performance window upgrades are worth pricing alongside the project. Eco flags envelope issues during the estimate so your equipment isn't fighting a leaky house.
Ways to electrify without a panel upgrade
If a load calculation shows you're tight on capacity, there's usually a cheaper fix than a new service: load-management (power-sharing) devices that pause one big load while another runs — an EV charger that yields to the dryer, for example; 120-volt plug-in heat pump water heaters that use a standard outlet instead of a new dedicated 240V circuit; smart panels like SPAN that meter and prioritize circuits in real time; and simply sequencing the project one appliance at a time instead of all at once. These approaches let many 100-amp homes add a heat pump, heat pump water heater, and EV charging while staying inside the service they already have. Eco's electricians quote these options alongside a conventional upgrade so you can compare real numbers instead of defaulting to the most expensive path.
How Eco makes rebates simple
First, a free in-home estimate — we assess your system and identify every rebate you qualify for. Second, correct-spec installation — we install to the exact standards City Light, PSE, Snohomish PUD, or the state program requires, so nothing gets disqualified. Third, instant savings applied — wherever possible we apply the discount directly to your invoice. Fourth, paperwork handled — we manage the rebate submission so you don't miss deadlines.
Key terms and context
This guide is written for heating & air decisions in the Puget Sound. It uses the same terminology you'll hear from inspectors, technicians, and permit offices.
Rebate mistakes that cost Seattle homeowners money
The common errors: choosing equipment one efficiency tier below the rebate threshold, DIY-installing a heat pump (not eligible for City Light's discount), double-dipping a coupon-discounted water heater into the post-purchase rebate (excluded), missing the 93-day submission window on a DIY water heater rebate, or budgeting around Washington's not-yet-launched HARP program. Each of these can cost more than the rebate itself — which is why the incentive check should happen before you sign, not after the install.
Deadlines and funding limits to watch
Programs are time-boxed and funding-limited: the Clean Heat income-qualified bonus applies to installations completed by September 30, 2026, and the smart thermostat rebate runs through December 31, 2026 — both subject to available funding. Most utility rebates run until funds are exhausted, so earlier is safer. Rebate amounts, eligibility, and deadlines change; treat every figure on this page as current as of mid-2026 and confirm the live number with your Eco estimator or the program's own page before you commit.
How we build this guidance
- Every dollar figure and deadline checked against the official program source (seattle.gov/city-light, Seattle Clean Heat, commerce.wa.gov, snopud.com, pse.com) — last verified July 8, 2026.
- Eco installs to City Light, PSE, SnoPUD, and state program specs and applies instant discounts on the invoice, so the numbers here reflect how the programs actually pay out.
- Rebate amounts and deadlines change with funding — we confirm current terms at your estimate rather than quoting last year's numbers.
- Not tax advice — consult a tax professional regarding any credit.
Methodology: Rebate amounts, eligibility, and deadlines change and are subject to funding availability. Figures current as of mid-2026 and verified against official program sources (seattle.gov/city-light, Seattle Clean Heat, commerce.wa.gov, snopud.com, pse.com); confirm current details with your Eco estimator. Not tax advice — consult a tax professional regarding any credit.
Last updated: 2026-07-08
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Continue exploring
- Learn: Washington HVAC rebates explained →
- Learn: What does a heat pump cost to run in Seattle? →
- Learn: When is a panel upgrade required? →
- Learn: SPAN smart panel basics →
- Evaluate: Heat pump vs gas furnace →
- Evaluate: Heat pump vs tankless vs tank water heater →
- Evaluate: Panel upgrade decision guide →
- Evaluate: What a fair second opinion looks like →
- Book: Heat pump installation →
Common questions
How much can I save with Seattle City Light rebates in 2026?
Depending on the equipment and your income, savings range from $300–$600 on a standard heat pump to up to $6,000 for an oil-to-heat-pump conversion, or a free system for income-qualified households through HomeWise. Heat pump water heaters qualify for a $750 rebate, and smart thermostats for electric baseboard heat earn $50 per unit up to 5 units.
Is there still a federal tax credit for heat pumps in 2026?
No. The federal 25C heat pump tax credit expired December 31, 2025. Installations placed in service by that date can still be claimed on a 2025 tax return using IRS Form 5695, but there is no federal residential heat pump tax credit for 2026 installations. Washington's utility and state rebate programs are the active savings in 2026.
Do I have to switch from oil to qualify?
No. The largest incentive (up to $6,000) is for oil conversions through Seattle's Clean Heat program, but City Light offers instant savings on qualifying heat pumps and heat pump water heaters regardless of your current heating fuel. Electric-baseboard homes also qualify for the smart thermostat rebate.
Does Seattle City Light cover Everett or Mount Vernon?
No — City Light serves only the City of Seattle. Everett is served by Snohomish County PUD ($1,800–$2,500 heat pump rebates through registered contractors) and the Mount Vernon area by Puget Sound Energy (roughly $1,500–$4,000 depending on fuel, equipment, and income). Eco serves and processes rebates in all three areas.
Do rebates come as a check or a discount?
It depends on the program. Many are instant discounts applied to your invoice through participating distributors — the heat pump discount and contractor-path water heater rebate work this way. Some, like the DIY post-purchase water heater rebate, are paid after you submit your paperwork; that one must be filed within 93 days of purchase.
Do I need a panel upgrade to install a heat pump or go all-electric?
Often, no. Code-minimum load calculations are conservative and routinely overestimate what a home actually draws — in Peninsula Clean Energy's large California load study, 99% of 722 all-electric single-family homes never exceeded 100 amps, with typical peaks near 29 amps. Load-management devices, 120V plug-in heat pump water heaters, and smart panels let many 100-amp homes electrify as-is; older 60-amp or knob-and-tube homes, or projects adding EV charging plus a heat pump at once, are the common cases that genuinely need an upgrade — and income-qualified panel work gets up to $4,000 of support under the HEAR/HARP framework when required. Eco measures your actual load and offers a free second opinion before you pay for a panel you may not need.
When do the 2026 rebates expire?
It's program-specific: the Clean Heat income-qualified bonus applies to installations completed by September 30, 2026, and the smart thermostat rebate runs through December 31, 2026. Most utility rebates run until funding is exhausted, so acting earlier is safer. Eco confirms current deadlines at your estimate.