Gas to Heat Pump Conversion in the Seattle-Tacoma Area
Replace your gas furnace with a heat pump that heats and cools, or keep the furnace as backup for the coldest days. Our licensed HVAC and electrical team sizes it, wires it, handles the gas side and files the PSE, Tacoma Power and Cascade rebate paperwork.
Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • WA Electrical Contractor Lic. #HOMECCA782DC • NATE-certified technicians • Mitsubishi Electric Diamond Dealer • Lennox Premier Dealer
Can you replace a gas furnace with a heat pump?
Yes. A ducted heat pump with an electric air handler can replace a gas furnace and central air conditioner in one installation, using your existing ducts when they are sized and sealed well enough. Homes without good ductwork can use ductless or ducted mini-split systems instead. You can also keep the gas furnace as backup for the coldest days, which is called a hybrid or dual fuel system.
Which one fits depends on your furnace's age, your ducts, your electrical panel, who sells you gas and electricity, and which rebates you qualify for. Home Comfort Alliance sizes it, wires it and handles the PSE, Tacoma Power and Cascade rebate paperwork for you. Start with our heat pump installation guide if you are new to heat pumps.
Three ways gas homes go electric
- Full conversion: a heat pump and an electric air handler replace the furnace and AC; the furnace comes out and the gas line to it is capped.
- Hybrid (dual fuel): a heat pump replaces the AC; the gas furnace stays and runs only below a set outdoor temperature.
- Ductless or ducted mini-split: for homes with poor ducts or no ducts, or as a first step in the rooms you use most.
Go fully electric, or keep the furnace?
Go fully electric if your furnace is near the end of its life, you are replacing your AC too, you want to stop paying a gas bill, or you qualify for a rebate that requires it, such as PSE's $4,000 income-based rebate or Energy Smart Eastside's $5,000 bonus. Keep the furnace as backup if it is still in good shape, you want a gas safety net for rare freezes, or you are keeping gas for a range or water heater anyway.
| Your situation | Usually the better fit | Why |
|---|---|---|
| Old furnace and an old AC | Full heat pump | One installation replaces both |
| Newer furnace, AC failing | Hybrid | Keep the furnace and replace the AC with a heat pump |
| Income-qualified PSE gas customer | Full heat pump | PSE's $4,000 rebate requires the old gas heat to be removed or decommissioned |
| Eastside home, below 150% of King County median income | Full heat pump | Energy Smart Eastside's $5,000 bonus is for fully electric systems only |
| PSE gas customer who wants gas backup, ducted home | Hybrid | PSE's $1,500 hybrid rebate (ducted systems only) |
| Cascade Natural Gas customer | Either: compare both | PSE's gas rebates don't apply, and Cascade lists no heat pump rebate |
| Poor ducts or no ducts | Ductless or ducted mini-split | Avoids duct rework; PSE's $4,000 rebate allows ductless that meets its rules |
For more on running a heat pump with a furnace, see furnace vs heat pump vs hybrid systems. Decided to stay on gas? See furnace replacement.
What a gas to heat pump conversion involves
A conversion is a heating job, an electrical job and a gas job in one. We size the heat pump to your house, check your ducts, add the circuit and confirm panel capacity, and deal with the gas line the furnace used.
Sizing
A room-by-room load calculation (ACCA Manual J) on every installation. A furnace is often sized for a quick blast of hot air; a heat pump is sized to the house's real heating and cooling load. PSE's hybrid rebate adds its own design rules: a balance point of 30°F or below, with the furnace locked out above 35°F.
Ducts
Ducts built for a furnace may be too small or too leaky for a heat pump's steadier, cooler airflow. We check size and leakage at the estimate, and any duct changes go in your written price.
Electrical panel
A heat pump needs a dedicated 240-volt circuit. If your panel is full or a 100-amp service is already loaded, our licensed electricians (WA Electrical Contractor Lic. #HOMECCA782DC) check capacity at the estimate so any panel work is in your written price. See panel upgrades for heat pumps and our panel upgrade service.
The gas side: the furnace, the gas line and your meter
Our team does residential gas piping, so the gas side is part of the same job. PSE's $4,000 rebate requires the old gas heating equipment to be removed or decommissioned after the heat pump goes in, and PSE says cut and cap is allowed. If you keep gas for a range, water heater or fireplace, your gas service and meter stay. If you want gas service shut off completely, that request goes to your gas utility, PSE or Cascade Natural Gas; ask us at the estimate.
Permits
We pull the required permits for every installation: a mechanical permit for the heat pump and an electrical permit for the circuit, from your city or Washington L&I depending on where you live.
How much does it cost to convert from gas to a heat pump?
Heat pump installations in Seattle average about $10,218, with most between $6,667 and $13,852 (regional estimate, Angi, updated July 2026). A conversion from gas can cost more when it adds an air handler, a new circuit or panel work, duct changes or gas line capping. These are third-party figures, not our prices.
Your price depends on your home's heating and cooling needs, the add-ons you need, how many rooms the system serves and where it's installed. Get a price range in about 30 seconds with our free instant quote tool, then a technician confirms the exact price on a free site visit. For a closer look at what drives the price, see our heat pump cost guide.
What moves the price
- Full conversion or hybrid
- Ducted or ductless, and how many indoor units
- A new air handler in place of the furnace
- The electrical circuit and any panel work
- Duct repairs or changes
- Gas line capping
- Equipment tier, such as cold-climate and variable-speed models
Rebates for switching from gas (checked October 2026)
Which rebates you get depends on who sells you gas and who sells you electricity. Home Comfort Alliance is an approved contractor for PSE (Trade Ally), Tacoma Power, Seattle City Light, Snohomish PUD and Energy Smart Eastside, is on Cascade Natural Gas's contractor list, and handles the rebate paperwork for PSE, Tacoma Power and Cascade rebates.
| Program | Amount | Key rules |
|---|---|---|
| PSE gas to heat pump (moderate income) | $4,000, based on income | Single-family PSE natural gas customers heating with PSE gas. Ducted or ductless (ductless: variable-speed, at least 3/4 ton, a head in the main living area). Old gas heat removed or decommissioned; cut and cap allowed. Backup heat lockout settings required. Apply within 30 days. PSE Trade Ally or Recommended Energy Professional |
| PSE hybrid heat pump | $1,500, plus up to $2,400 Efficiency Boost based on income | PSE natural gas or dual-fuel customers with a PSE gas furnace. Central ducted heat pump only. Balance point 30°F or below; furnace locked out at 35°F or below |
| Energy Smart Eastside (Bellevue, Issaquah, Kirkland, Mercer Island, Redmond, Sammamish) | $1,000 instant, plus a $5,000 bonus for fully electric systems | Qualifying Mitsubishi, Bryant/Carrier or Day & Night heat pumps. The bonus needs a fully electric system and a household below 150% of King County median income; hybrids get the $1,000 only |
| Tacoma Power | $1,000 | Variable-speed heat pump replacing non-electric heat such as gas, through a participating contractor. Tacoma Power's loans are for homes with existing electric heat |
| PSE Duvall heat pump program | $8,000 | Natural gas primary heat in specific Duvall neighborhoods; sign up with PSE. See our Duvall page |
| Seattle Office of Housing gas-to-electric | Free for eligible households | Income-qualified Seattle households; the City's HomeWise team selects the contractor |
| Seattle City Light | $300, $400 or $600 instant discount | On qualifying heat pumps by efficiency tier, through participating distributors |
| Washington HEAR | Varies | Households at or below 150% of area median income, through local administrators |
| Cascade Natural Gas | No heat pump rebate listed | Cascade's furnace rebates apply only when gas is the primary heat, not a backup for a heat pump |
On Cascade Natural Gas? PSE's gas rebates are for PSE gas customers, so homes on Cascade, for example in Bremerton, Port Orchard, Silverdale, Poulsbo, Marysville, Arlington, Stanwood and Mount Vernon, don't qualify for PSE's $4,000 or $1,500 programs. Your electric utility may still have a heat pump rebate; we check your utilities at the estimate.
The federal 25C tax credit ended for equipment placed in service after December 31, 2025. Rebate rules change, so we confirm eligibility for your address before you commit. More detail: PSE rebates, all rebates and stacking PSE and WA HEAR rebates.
Paying for your conversion
Low monthly payment plans starting at $179/month*, with 0% options for qualifying customers and instant online approval through Salal Credit Union or Synchrony. See financing.
*Financing through Salal Credit Union or Synchrony, subject to credit approval. Rates, terms and monthly payments depend on the amount financed, the plan and your credit. 0% interest options are available to qualifying customers. See lender for full terms.
Get a free estimateAn in-home visit, a load calculation and a written price before any work begins.
How our gas to heat pump conversion works
- Free in-home estimate. We look at your furnace, ducts, panel and gas lines and confirm which utilities serve your home.
- Load calculation and options. A Manual J calculation, with full electric and hybrid options side by side when both fit.
- Written price and rebate plan. Which rebates apply, and which paperwork we file for you.
- Permits. We pull the required permits.
- Installation. The heat pump, air handler or indoor units, the electrical circuit or panel work, and the gas side: furnace out and line capped, or hybrid controls set up.
- Setup and walkthrough. Thermostat and lockout settings the rebate requires, and how to run the system.
- Rebate paperwork. PSE applications go in within PSE's 30-day window; Energy Smart Eastside's instant rebate comes off at the sale.
A recent dual fuel job: Redmond
In September 2026 our installers put in a dual fuel system for a Redmond home that heats with gas: a new gas furnace paired with a 5-ton variable-speed heat pump and a communicating thermostat. The heat pump now does most of the heating and all of the cooling, and the furnace takes over in the coldest weather. We sent the permits, and a PSE rebate applied. This home already had a heat pump next to its gas furnace, so it was a replacement rather than a first conversion, but it shows the keep-the-furnace option described above.
What you get with Home Comfort Alliance
- NATE-certified technicians and licensed electricians from one company
- A room-by-room load calculation (ACCA Manual J) on every installation
- We pull the required permits for every installation
- Rebate paperwork handled for PSE, Tacoma Power and Cascade rebates
- 1-year labor warranty on installations. Home Comfort Club members with a new system installed by Home Comfort Alliance get extended labor coverage for up to 5 years from installation
- We support the manufacturer's warranty on covered parts
- Mitsubishi Electric Diamond Dealer, Carrier Factory Authorized Dealer and Lennox Premier Dealer
- Upfront, transparent pricing before any work begins
Where we convert gas homes to heat pumps
- Eastside and King County (Redmond branch): Seattle, Bellevue, Kirkland, Redmond, Sammamish, Mercer Island, Issaquah and Duvall
- Snohomish County (Everett branch): Everett, Mill Creek, Lake Stevens, Snohomish, Edmonds and Mount Vernon
- Pierce and south King County (Sumner branch): Tacoma, Puyallup, Sumner, Bonney Lake, Lakewood, Kent and Auburn
- Kitsap County (Bremerton branch): Bremerton, Kingston, Poulsbo and Bainbridge Island; many Kitsap homes are on Cascade Natural Gas
Other conversions: electric baseboard to heat pump and oil to heat pump.
Gas to heat pump conversion FAQ
Can I replace my gas furnace with a heat pump?
Yes. A ducted heat pump with an electric air handler can replace a gas furnace and central air conditioner in one installation, and homes without suitable ducts can use ductless or ducted mini-split systems. You can also keep the furnace as backup for the coldest days, which is called a hybrid or dual fuel system. We size every system with a room-by-room ACCA Manual J load calculation.
Should I keep my gas furnace as backup or go all electric?
Keep the furnace if it is in good shape and you want gas backup for rare cold snaps. Go all electric if the furnace is old, you are replacing your air conditioner too, or you qualify for a rebate that requires full electrification, such as PSE's $4,000 income-based rebate or Energy Smart Eastside's $5,000 bonus. We price both options at the estimate when both fit your home.
How much does it cost to convert from gas to a heat pump in Seattle?
Heat pump installations in Seattle average about $10,218, with most between $6,667 and $13,852 (regional estimate, Angi, July 2026). A gas conversion can cost more when it adds an air handler, electrical work or duct changes. Use our free instant quote tool for a price range, then book a free in-home estimate for a written price.
What rebates are there to switch from gas to a heat pump with PSE?
As of October 2026, PSE offers a $4,000 rebate, based on income, to single-family PSE natural gas customers who replace PSE gas heat with a heat pump, and a $1,500 rebate (plus up to $2,400 in Efficiency Boost, based on income) for adding a ducted heat pump to a PSE gas furnace as a hybrid system. Both require a PSE Trade Ally or Recommended Energy Professional. Home Comfort Alliance is a PSE Trade Ally and handles the rebate paperwork.
Do I have to remove my gas furnace to get PSE's $4,000 rebate?
The old gas heating equipment must be removed or decommissioned after the heat pump is installed, and PSE says cut and cap is allowed. PSE also requires backup heat lockout settings, and the application is due within 30 days of installation. Homes with an existing heat pump or hybrid system are not eligible.
What happens to my gas line and meter?
Our team does residential gas piping, so the gas line to the old furnace is handled as part of the job. If you keep gas for a range, water heater or fireplace, your gas service and meter stay in place. If you want gas service shut off completely, that request goes to your gas utility; ask us at the estimate.
I'm a Cascade Natural Gas customer. Which rebates can I get?
PSE's gas to heat pump and hybrid rebates are for PSE natural gas customers, so Cascade Natural Gas customers do not qualify for them. Cascade lists no heat pump rebate, and its furnace rebates apply only when natural gas is the primary heat, not a backup for a heat pump. Your electric utility may still offer a heat pump rebate, which we check at the estimate.
Is there a rebate for replacing a gas furnace with a heat pump on the Eastside?
Yes. Energy Smart Eastside offers a $1,000 instant rebate on qualifying Mitsubishi, Bryant/Carrier or Day & Night heat pumps in Bellevue, Issaquah, Kirkland, Mercer Island, Redmond and Sammamish. Households below 150% of King County area median income can add a $5,000 bonus, but only for a fully electric system. Hybrid systems get the $1,000 rebate only.
Does Tacoma Power offer a rebate to switch from gas?
Yes. Tacoma Power offers $1,000 for a variable-speed heat pump that replaces non-electric heat such as gas, installed by a participating contractor. Tacoma Power's loans are for homes with existing electric heat, so they don't apply to a gas furnace home. Home Comfort Alliance is an approved Tacoma Power contractor.
Will I need an electrical panel upgrade?
Maybe. A heat pump needs a dedicated 240-volt circuit, and a full panel or a busy 100-amp service may need a load calculation or an upgrade. Our licensed electricians (WA Electrical Contractor Lic. #HOMECCA782DC) check this at the estimate so any panel work is in your written price.
Do I need a permit to switch from gas to a heat pump?
Yes. A heat pump installation needs a mechanical permit, and the electrical work needs an electrical permit from your city or Washington L&I, depending on where you live. We pull the required permits for every installation.
Is there still a federal tax credit for switching to a heat pump?
No. The federal 25C energy efficient home improvement credit ended for equipment placed in service after December 31, 2025. Utility and local rebates are now the main incentives, and we help you find the ones your home qualifies for.
Sources
- PSE, moderate-income heat pump rebate (natural gas to heat pump)
- PSE, hybrid heat pump rebate
- Energy Smart Eastside, rebates
- Tacoma Power, heat pumps
- PSE, Duvall heat pump program
- City of Seattle Office of Housing, gas-to-electric program
- Seattle City Light, heating and cooling your home
- Cascade Natural Gas, residential rebate offerings
- Washington State Department of Commerce, HEAR program
- Angi, heat pump cost in Seattle (updated July 2026)
- U.S. Department of Energy, heat pump systems
Rebates checked October 2026.
Why Choose Home Comfort Alliance for Your Gas to Heat Pump Conversion?
Your Comfort is Our Promise
We promise...
Reliable heating, air conditioning, plumbing and electrical service, all from one trusted company.
To educate and guide you through your options so you’ll find the right solution at the right price.
Knowledgeable and respectful workers who ensure both your own comfort during the installation process, and lasting comfort from your home systems.
Outstanding service, communication, and follow-up, so your home is comfortable now and for years to come.
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