Heat Pump Repair in Duvall, WA
Ducted, ductless and dual fuel heat pump repair for Duvall homes from our Redmond team, with fees listed up front and a written price before work starts.
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
Heat pump repair in Duvall: what to expect
Home Comfort Alliance repairs ducted, ductless and dual fuel heat pumps in Duvall, WA, with an upfront price before any work begins. A visit starts with a $119 dispatch fee and a $72 standard or $130 deeper diagnostic, listed separately. You approve the repair price in writing, and our trucks are fully stocked, so most repairs can be handled on the spot.
Duvall is covered by our Redmond team. Call (425) 645-0404: our phones are answered and bookings are accepted 24/7.
Burning smell or sparks at the outdoor unit? Switch the heat pump off at the thermostat and the breaker, and call. In a dual fuel home, if you smell gas, leave the house and call PSE at 1-888-225-5773 or 911 from outside.
Five checks before you book
- Thermostat on HEAT (not COOL or AUTO with a low setting), with fresh batteries.
- Clean filter at the indoor unit or air handler. On a mini-split, rinse the washable filters in each head.
- Two breakers: one for the outdoor unit and one for the indoor unit or air handler. Both should be on.
- Outdoor unit clear of leaves, snow and anything stacked against it.
- Steam or a whoosh from the outdoor unit for a few minutes is a normal defrost. Give it ten minutes before deciding it has failed.
More detail in our guide to why a heat pump blows cold air.
Signs your heat pump needs a repair
- Lukewarm or cold air for long stretches on a cold morning.
- The system turns off and on every few minutes.
- Ice that stays on the outdoor coil after a defrost cycle.
- The thermostat shows AUX or EM heat most of the day in mild weather.
- Grinding, buzzing or a fan that does not spin.
- A mini-split head flashing an error code or dripping water.
- A PSE bill that jumps for no clear reason.
Ice, defrost and backup heat on cold valley mornings
Cold air settles on the Snoqualmie Valley floor overnight, so Duvall heat pumps spend a lot of winter mornings in defrost. A short defrost is normal: the outdoor fan stops, the unit briefly reverses, and you may see steam. The backup heat (AUX) covers the gap.
Trouble starts when the defrost control or its sensor fails. The coil can ice over solid, or the board can cycle the system off and on. When the backup electric heat in the air handler also stops working, the house cools quickly. That is exactly the kind of two-part fault we found on a recent Duvall call (below).
If you see a solid block of ice, do not chip at it; the fins and coil damage easily. Switch to emergency heat if your thermostat has it and book a repair.
Ductless and mini-split repair in Duvall
Ductless heads are a common way to heat a room the original system never reached. We repair indoor heads, outdoor units, drain lines, sensors and communication faults on all major brands. Home Comfort Alliance is a Mitsubishi Electric Diamond Dealer, and we service single-zone and multi-zone systems alike. More on ductless systems.
Dual fuel systems: heat pump plus gas furnace
Duvall is on PSE natural gas, and plenty of homes pair a heat pump with a gas furnace that takes over in the coldest weather. We repair both halves and check the outdoor temperature lockout settings that decide when each one runs. For the furnace side, see furnace repair in Duvall, and our guide to dual fuel heat pumps.
After a flood: leave the outdoor unit off
Low roads around Duvall can flood in a wet winter. If floodwater reached your outdoor unit, keep it switched off at the breaker. Water and silt can damage the control board, the fan motor and the electrical connections, and restarting a wet unit can turn a cleaning job into a parts job. Book a visit and we will check it before it runs.
Hours and after-hours help
Our phones are answered and bookings are accepted 24/7. Heating and cooling technicians work during business hours and are available after hours for qualifying emergencies ($330 after-hours fee), such as a heat pump that has stopped heating in cold weather or a burning or electrical smell. Standard visits run Monday to Friday, 8 AM to 5 PM, with same-day service when possible.
What heat pump repair costs in Duvall
We publish our fees and list each one separately. After the diagnosis you get the repair price in writing and decide.
| Home Comfort Alliance item | Price |
|---|---|
| Dispatch (trip) fee | $119 |
| Standard diagnostic | $72 |
| Deeper diagnostic | $130 |
| After-hours fee (qualifying emergencies) | $330 |
| Heat pump tune-up, per piece of equipment | $230 ($180 Club) |
| Thermostat replacement | $299 to $1,840 |
Prices as of October 2026. The standard and deeper diagnostics are one or the other, never both.
For context: Angi lists Seattle-area heat pump repairs at $220 to $2,220 (May 2026) (Angi heat pump repair costs). That is not our price. Our heat pump repair cost guide breaks down the common parts.
Current offers: $50 off HVAC service or repair, and 10% Off Heat Pump Tune-Up (special offers; not combinable with Club pricing). Repairs can be financed with Salal Credit Union or Synchrony, from $179/month* (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 an estimateA written, upfront price before any work begins.
Repair or replace a Duvall heat pump?
A heat pump with a failed board, capacitor, contactor or sensor is usually worth repairing. A failed compressor, a leaking coil on an older unit, or a system that still uses R-22 refrigerant is when a replacement price is worth comparing.
Know this before you plan on rebates: PSE's Duvall Heat Pump Program (up to $8,000) is for homes switching from natural gas heat, and homes that already have a heat pump, including one used only for cooling, are not eligible (PSE Duvall program, read October 2026). If your current ducted, all-electric heat pump is out of its manufacturer's warranty and you replace it with a qualifying cold-climate ducted model, PSE's upgrade rebate is $1,500 plus an income-based Efficiency Boost of up to $2,400. Ductless and dual fuel systems are excluded, and a PSE Trade Ally or REP must do the work (PSE upgrade rebate). Home Comfort Alliance is a PSE Trade Ally, and we handle the rebate paperwork for you.
Replacement estimates are free; our instant HVAC quote gives a range in about 30 seconds. What you get with a replacement: a 3-year Comfort Shield labor warranty on new installations, kept active with yearly maintenance. First-year maintenance is included. See heat pumps in Duvall and our Duvall heat pump program page.
How a heat pump repair visit works
- Book by phone or online and choose an arrival window.
- A NATE-certified technician checks the thermostat, then both the indoor and outdoor units.
- We test the capacitor, contactor, fan motors, defrost board and sensors, and measure refrigerant pressures and compressor amp draw.
- You get the repair price in writing before any work begins.
- We repair what we can from the truck and test the system in heating mode, including a defrost cycle where conditions allow.
- If a part has to be ordered, we tell you before we leave and book the return visit.
Permits and utilities in Duvall
Puget Sound Energy supplies electricity and natural gas in Duvall. Part-only repairs need no permit. Replacing a heat pump inside city limits needs a mechanical permit from the City of Duvall Permit Center, 14525 Main Street NE, 425-788-2779, and the city asks for a pressure test affidavit when refrigerant lines are installed (City of Duvall permitting). Addresses outside city limits go through King County Permitting, 206-296-6600. Electrical permits come from Washington L&I. We pull the required permits for every installation.
A recent Duvall heat pump repair: two faults, two visits
In mid October a Duvall homeowner called about a system that was "not kicking on". It turned out to be a heat pump with an electric air handler, five to ten years old.
Our technician found two separate problems. The heat pump was shutting off and on because of a short, most likely on the defrost control board, and the air handler would not run its backup electric heat at all. Two days later he returned with a new defrost board, installed and tested it, and the cycling stopped. He then narrowed the backup heat fault to the fan board, a contactor or the heat strip itself, and ordered the part so only the failed piece would be replaced.
From our October 2026 service records; customer details are kept private.
Why Duvall homeowners choose us
- TrustAnalytica Top 10 HVAC Contractor 2026 (Redmond).
- Mitsubishi Electric Diamond Dealer, Carrier Factory Authorized Dealer and Lennox Premier Dealer.
- NATE-certified technicians and a written price before any work.
- Licensed, bonded and insured in Washington: WA Contractor Reg. #HOMECCA785BD and WA Electrical Contractor Lic. #HOMECCA782DC.
- BBB Accredited Business since 2002, ACCA member, Best Pick 2025 and 2026.
- Locally owned since 1977.
Where we repair heat pumps around Duvall
We repair heat pumps throughout Duvall, in ZIP code 98019 and nearby 98014. Our Redmond team also serves Redmond, Woodinville, Issaquah and Sammamish.
Duvall heat pump repair FAQ
How much does heat pump repair cost in Duvall?
Repair visits carry a $119 dispatch fee. Diagnosis is $72 standard or $130 for a deeper diagnostic, and after-hours visits for qualifying emergencies carry a $330 after-hours fee. You get an upfront price for the repair before any work begins. For context, Angi lists Seattle-area heat pump repairs at $220 to $2,220 (May 2026); that is not our price.
Why is my heat pump blowing cold air?
Heat pump air feels cooler than furnace air, so lukewarm air can be normal. Cold air for long stretches can point to a defrost cycle, thermostat settings, a reversing valve or low refrigerant from a leak. Check that the thermostat is on HEAT and the filter is clean, then call us.
Why does my heat pump keep turning off and on?
Frequent cycling can come from a failing defrost control board, an electrical short, a refrigerant problem, a thermostat issue or an oversized system. A technician traces which one with meter readings before replacing anything.
Why is my heat pump covered in ice?
Light frost that clears during defrost is normal. Ice that stays, or a solid block on the coil, suggests a defrost control, sensor, fan or refrigerant problem. Do not chip the ice; switch to emergency heat if you have it and book a repair.
Why does my thermostat say AUX or EM heat?
AUX is backup heat that helps in cold weather or during defrost. EM runs only the backup. If AUX runs most of the day in mild weather, or your bill jumps, have the heat pump checked.
Can you come today or after hours?
Same-day service when possible. Our phones are answered and bookings are accepted 24/7. Heating and cooling technicians work during business hours and are available after hours for qualifying emergencies ($330 after-hours fee), such as a heat pump that has stopped heating in cold weather.
Do you repair ductless mini-splits?
Yes. We repair ductless and ducted heat pumps from all major brands, and we are a Mitsubishi Electric Diamond Dealer, a Carrier Factory Authorized Dealer and a Lennox Premier Dealer.
I have a heat pump and a gas furnace. Who fixes which part?
We do both. Our technicians repair the heat pump and the PSE gas furnace in dual fuel systems and check how they hand off to each other.
My outdoor unit sat in floodwater. Can I turn it back on?
Do not run it. Water can damage the electrical parts and controls. Keep it off at the breaker and book a repair visit so a technician can check it first.
Can I get the PSE Duvall $8,000 rebate if I already have a heat pump?
No. PSE says homes with an existing heat pump, including one used only for cooling, are not eligible for the Duvall Heat Pump Program (pse.com, October 2026). If you replace an out-of-warranty ducted all-electric heat pump, PSE's upgrade rebate of $1,500 plus an income-based Efficiency Boost of up to $2,400 may apply.
Do I need a permit for heat pump work in Duvall?
Part-only repairs need no permit. Replacing a heat pump needs a mechanical permit from the City of Duvall, or from King County for addresses outside city limits, plus an L&I electrical permit. We pull the required permits for every installation.
Is your company licensed?
Yes: WA Contractor Reg. #HOMECCA785BD and WA Electrical Contractor Lic. #HOMECCA782DC. We are licensed, bonded and insured in Washington.
Sources (checked October 22, 2026): PSE, Duvall Heat Pump Program; PSE, heat pump to heat pump upgrade rebate; City of Duvall, permitting; Angi, Seattle heat pump repair cost (May 2026).
Why Choose Home Comfort Alliance in Duvall?
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 Duvall
Tell us what the heat pump is doing. A technician from our Redmond team will find the fault and give you a written, upfront price before any work begins.
Request heat pump repair
We will call you to set up the visit. If your heat pump has stopped heating after hours, call (425) 645-0404.