Heat Pump Repair in Seattle, WA
Heat pump and ductless repair across Seattle from our Redmond branch: 24/7 emergency HVAC service, same-day visits when possible, and an upfront price before any work begins.
Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • NATE-certified technicians • Carrier Factory Authorized Dealer • Mitsubishi Electric Diamond Dealer
Seattle heat pump repair: the short answer
Home Comfort Alliance repairs ducted heat pumps, ductless mini-splits and dual-fuel systems in homes across Seattle, with technicians dispatched from our Redmond branch. Our phones are answered 24/7 and we offer 24/7 emergency HVAC service in Seattle, with a $330 after-hours fee. A regular visit costs a $119 dispatch fee plus a $72 standard diagnostic, and you approve a written price before we repair anything.
Office hours are Monday to Friday, 8 AM to 5 PM, with same-day service when possible. If the heat pump stops after hours, call us and set the thermostat to emergency heat while you wait.
Is your Seattle heat pump telling you it needs a repair?
Seattle heat pumps work through long, wet heating seasons, so small faults show up as comfort problems first. Call us when you see:
- Air from the vents or the ductless head that feels cool in heat mode.
- An outdoor unit that stays packed with ice after defrost.
- The unit running past the thermostat setting, or not reaching it at all.
- The aux or emergency heat light on for most of the day, and a higher Seattle City Light bill.
- Rattling, grinding or a sharp bang from the outdoor unit.
- A ductless head that drips, smells musty or flashes a code.
- A breaker that trips a second time.
What you can safely check first
- Make sure the thermostat or remote is in heat mode with fresh batteries, and that it reads the room temperature correctly.
- Reset a tripped breaker or outdoor disconnect once. If it trips again, leave it off.
- Replace a dirty filter, or rinse the washable filters in a ductless head.
- Keep leaves, moss and snow off the outdoor unit. Let ice melt on its own during defrost.
Our heat pump repair guide covers these checks in more depth.
Heat pump repairs we handle in Seattle homes
Many older Seattle houses were built without ducts or with small ones, so ductless mini-splits are common here, along with ducted heat pumps in newer homes and heat pumps that replaced oil furnaces. Condos and townhomes often have outdoor units on flat roofs or small decks, which makes airflow and access part of the diagnosis.
| Symptom | Likely cause | Our approach |
|---|---|---|
| Runs past the setpoint or short cycles | Thermostat or sensor reading wrong, control fault | Compare the thermostat reading with actual room temperature before touching the equipment |
| Not enough heat | Low refrigerant, dirty coil, airflow restriction | Check pressures and temperatures; look for leaks before adding refrigerant |
| Ductless head leaks water | Clogged condensate line or pump, unlevel head | Clear and test the drain; check that the head is level |
| Outdoor unit will not start | Capacitor, contactor, control board, tripped disconnect | Test each part and the control signal |
Ductless and mini-split repair in Seattle
We repair single-room and multi-zone ductless systems, including a single head that quits while the rest keep running. Home Comfort Alliance is a Mitsubishi Electric Diamond Dealer, and we service all major brands.
Heat pumps paired with a gas furnace
Some Seattle homes on PSE gas run a heat pump with a gas furnace as backup. We repair the heat pump side here and the furnace side on our furnace repair in Seattle page.
Emergency heat pump repair in Seattle
When a heat pump fails on a cold night, you can reach us. Phones are answered 24/7, we offer 24/7 emergency HVAC service across Seattle, and the after-hours fee is $330. It is an emergency if the house is losing heat in freezing weather, there is a burning smell, or a breaker keeps tripping.
Switch to emergency heat if your system has backup heat, and keep space heaters away from curtains and bedding. See our heat pump emergency guide for more.
Repair or replace a Seattle heat pump?
A reliable system with one failed part is usually worth repairing. Replacement is worth a look when:
- The compressor fails on an older unit.
- The system runs on R-22, which is no longer made.
- Age multiplied by the repair cost passes $5,000.
- Repairs keep coming, or backup heat carries the winter.
Repairs do not qualify for rebates. For a replacement, Seattle City Light, which supplies electricity in Seattle, offers an instant discount of $300, $400 or $600 on a qualifying ducted air-source heat pump under 5.4 tons, depending on efficiency. Homes heated with oil can use the Seattle Clean Heat Program: $2,000 to switch from oil to a Mitsubishi Electric heat pump, plus a $4,000 bonus for moderate-income households on installations completed by 30 May 2027. Homes on PSE gas can get $1,500 to add a heat pump to a gas furnace, plus a $2,400 income-based Efficiency Boost. PSE's heat-pump-to-heat-pump rebate is for PSE electric customers, so it does not apply to City Light homes. Amounts read October 2026.
Replacement estimates are free; try our instant quote for a price range in about 30 seconds, or read about heat pump installation in Seattle. A replacement needs permits from the Seattle Department of Construction and Inspections (SDCI), including a refrigeration permit that only a licensed contractor can pull, and the new outdoor unit must meet Seattle's heat pump noise limit. We handle both.
How much does heat pump repair cost in Seattle?
Seattle heat pump repair starts with a $119 dispatch fee and a $72 standard diagnostic; the final price depends on the repair, and you see it in writing first. For a local benchmark, Angi puts most Seattle-area heat pump repairs between $220 and $2,220 (regional estimate, updated May 2026).
Our Seattle heat pump repair prices
| Charge | Home Comfort Alliance price |
|---|---|
| Dispatch (trip) fee | $119 |
| Standard diagnostic | $72 |
| Deeper diagnostic (intermittent or multi-part faults) | $130 |
| After-hours fee (evenings, weekends, holidays) | $330 |
| Thermostat replacement | $299 to $1,840 |
| Heat pump tune-up | $230 ($180 for Home Comfort Club members) |
Fees are listed separately and are not added together. Updated October 2026.
What common repairs cost
| Common heat pump repair | National estimate |
|---|---|
| Capacitor or contactor | $120 to $400 |
| Outdoor or indoor fan motor | $200 to $700 |
| Defrost or main control board | $150 to $700 |
| Reversing valve | $200 to $650 |
| Refrigerant leak repair and recharge | $300 to $1,200 |
| Compressor | $650 to $2,400 |
National estimate from Angi (updated October 2026). These are not Home Comfort Alliance prices; your technician gives you a written price for your system.
Current offers: $50 off emergency no-heat calls and 10% off a heat pump tune-up (special offers). A larger repair can be financed through Salal Credit Union or Synchrony, with plans from $179/month* and 0% interest options for qualifying customers (financing). Home Comfort Club members (from $15 a month) get priority scheduling, discounted repair rates and a $180 heat pump tune-up (membership plans).
*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.
Book a heat pump repairYou approve a written, upfront price before any work begins.
How a Seattle heat pump repair visit works
Whether you call at noon or midnight, the visit works the same way.
- Call or book online. Our phones are answered 24/7, and we confirm an arrival window.
- Diagnose. A NATE-certified technician checks heating and cooling modes, refrigerant pressures, electrical parts, the defrost cycle, backup heat and airflow.
- Upfront price. You get a written price, and repair-or-replace advice when it applies, before any work begins.
- Repair. Most common parts are on the van, so many repairs finish on the first visit.
- Test and review. We run a full heating cycle, including a defrost check, and walk you through what we found.
A recent Seattle heat pump repair: northeast Seattle
In late September a northeast Seattle homeowner called because their Mitsubishi heat pump kept running past the temperature set on the thermostat and would not shut off. Our technician checked the system against the room before touching the heat pump. The room was at 72°F, but the thermostat reading kept jumping to 76°F and 77°F, so the system kept calling for more. The heat pump itself was doing what it was told; the thermostat was misreading the room. He set up the next step, checking whether the thermostat was still under warranty, instead of replacing parts the system did not need.
From our September 2026 service records. Photo: a ductless heat pump outdoor unit on its pad.
What you get with Home Comfort Alliance
- A NATE-certified technician and a written, upfront price before any work begins.
- Phones answered 24/7 and 24/7 emergency HVAC service in Seattle.
- Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD; WA Electrical Contractor Lic. #HOMECCA782DC).
- Every major heat pump brand serviced. We are a Mitsubishi Electric Diamond Dealer, a Carrier Factory Authorized Dealer and a Lennox Premier Dealer.
- Manufacturer parts warranty support, plus repair labor coverage for Home Comfort Club members for as long as they subscribe, up to 5 years from installation.
- A Seattle City Light approved contractor and Seattle Clean Heat participating contractor, BBB Accredited since 2002, ACCA member, Best Pick 2025 and 2026.
- Locally owned since 1977.
Where we repair heat pumps in Seattle
Our Redmond branch sends technicians across Seattle, including North Seattle (Ballard, Fremont, Wallingford, Green Lake, the University District, Ravenna, Wedgwood, Northgate and Lake City), Central Seattle (Capitol Hill, the Central District, Madison Park, Queen Anne and Magnolia) and West Seattle (Alki, Admiral, Fauntleroy and Delridge). Nearby, we also cover Bellevue, Kirkland and Redmond. See all our Seattle services.
Seattle heat pump repair FAQ
Who repairs heat pumps in Seattle at night or on weekends?
Home Comfort Alliance. Our phones are answered 24/7 and we offer 24/7 emergency HVAC service in Seattle. The after-hours fee is $330.
How much does heat pump repair cost in Seattle?
The dispatch fee is $119 and a standard diagnostic is $72, and the repair is priced in writing before work begins. Angi puts most Seattle-area heat pump repairs at $220 to $2,220 (regional estimate, May 2026).
Do you charge for a diagnostic?
Yes. A standard diagnostic is $72 and a deeper diagnostic for intermittent or multi-part faults is $130, on top of the $119 dispatch fee. They are listed separately. Replacement estimates are free.
Why does my heat pump keep running past the thermostat setting?
Often the thermostat or its sensor is misreading the room, so the system keeps calling for heat. It can also be low refrigerant, a dirty coil or a control fault. We compare the thermostat with the actual room temperature before replacing parts.
Why is my heat pump blowing cool air?
Heat pump air feels cooler than furnace air, and a defrost cycle blows cool air for a few minutes. Air that stays cool can mean a reversing valve, refrigerant or control problem.
Is ice on my outdoor unit normal?
Light frost is normal in cold, wet weather and clears during defrost. Ice that stays or builds up points to a defrost, airflow or refrigerant fault. Do not chip it; call us.
Do you repair ductless mini-splits in Seattle?
Yes. We repair single-zone and multi-zone ductless systems, including leaking heads and heads that stop responding. We are a Mitsubishi Electric Diamond Dealer and service all major brands.
Do heat pump repairs qualify for Seattle City Light rebates?
No. Rebates apply to new equipment. If you replace a ducted heat pump, Seattle City Light offers an instant discount of $300, $400 or $600 depending on efficiency. Amounts read October 2026.
Can I get help switching from oil heat to a heat pump?
Yes. The Seattle Clean Heat Program offers $2,000 to switch from oil to a Mitsubishi Electric heat pump, plus a $4,000 bonus for moderate-income households on installations completed by 30 May 2027. We are a participating contractor.
Does a heat pump replacement need a permit in Seattle?
Yes. SDCI issues the permits, including a refrigeration permit that only a licensed contractor can pull, and the outdoor unit must meet Seattle's noise limit. We pull the permits on every installation.
Should I repair or replace my heat pump?
Repair a reliable system with one failed part. Consider replacing if the compressor fails on an older unit, the system uses R-22, or the age times the repair cost is over $5,000. We give both options before work starts.
Which Seattle neighborhoods do you serve?
All of Seattle, including Ballard, Fremont, Wallingford, Green Lake, the University District, Ravenna, Wedgwood, Northgate, Lake City, Capitol Hill, Queen Anne, Magnolia and West Seattle.
Sources (checked October 10, 2026): Angi, Seattle HVAC repair cost (May 2026); Angi, heat pump repair cost (Oct 2026); Seattle City Light, heating and cooling; City of Seattle, Clean Heat Program; PSE, hybrid heat pump; Seattle SDCI.
Why Choose Home Comfort Alliance in Seattle?
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.
Book a heat pump repair in Seattle
Tell us what your heat pump is doing. A heating technician from our Redmond branch will diagnose it and give you a written, upfront price before any work begins.
Request heat pump repair
Our team will call you to set up your visit. For a heat pump that stops after hours, call (425) 645-0404.