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Heat Pump Repair in Seattle

No Heat? No cool?
We're On Our Way.

Same-day and next-day heat pump repair for all major brands, from Snohomish County’s trusted local experts.

Over 174, verified 5-star customer reviews

Utility-verified for efficiency and workmanship

Same-day service available, fixed fast

Approved installer, vetted for training and quality

Flexible plans, approval in minutes

Signs Your Heat Pump Needs Repair

Heat Pump Won't Turn On

No power, tripped breaker, or thermostat issue

Blowing cold Air When Set To Heat

Often a reversing valve or refrigerant issue

Blowing Warm Air When Set To Cool

Reversing valve causing issues again or refrigerant trouble

Weak Airflow

Clogged filter, blocked vents, or failing blower motor

Ice Buildup On Outdoor Unit

Defrost cycle failure, common in Seattle’s damp winters

Short Cycling

Turning on and off repeatedly instead of running full cycles

Strange Noises

Clicking, buzzing, or grinding from the outdoor or indoor unit

Higher Energy Bill

Often a sign of reduced efficiency before a full breakdown

What's Included in Our Heat Pump Repair Service

Every heat pump repair starts with a full diagnostic, not a guess, because heating and cooling problems don’t always have the same cause.

01

Full system diagnostic

We check refrigerant levels, the reversing valve, electrical components, airflow, defrost cycle, and thermostat settings to find the actual problem, whether your system won’t heat, won’t cool, or won’t turn on at all.

02

Clear explanation before any work

You’ll know what’s wrong, what’s causing it, and what it costs before we touch anything. No jargon, no upselling.

03

Repair using quality parts

We use manufacturer-approved parts across all major heat pump brands, Mitsubishi, Trane, Carrier, Daikin, and more, not the cheapest option available.

04

System test before we leave

We confirm the fix worked in both heating and cooling mode, not just the mode you called about.

05

Cleanup

We leave your space the way we found it.

Repair or Replace? How To Know

Most heat pump problems are fixable. Here’s how we (and you) can tell when repair still makes sense, and when replacement saves you more in the long run.

REPAIR USUALLY MAKES SENSE IF:

  1. Your system is under 10 years old
  2. This is the first major repair
  3. The repair cost is reasonably lower than replacement
  4. The rest of the system is in good working condition

REPLACEMENT IS WORTH CONSIDERING IF:

  1. Your system is 12-15+ years old
  2. You’ve had multiple repairs in the last few years
  3. Repair costs are more than 50% of replacement cost
  4. Your energy bills have been steadily climbing

We’ll always give you a straight answer, even if that means a repair instead of a sale. If replacement really is the better move, we’ll walk you through what a heat pump replacement looks like, no pressure, just the facts.

How We Diagnose Your Heat Pump, Step by Step

DIAGNOSE

1. Thermostat and mode check — Confirm the thermostat is correctly calling for heat or cool, and that the system is responding to the right mode.

2. Power and electrical inspection — Check the disconnect, breaker, capacitor, and contactor for failures or wear.

3. Reversing valve test — Confirm the valve is switching properly between heating and cooling. A stuck valve is a heat pump-only failure that doesn’t exist on standard AC systems.

4. Refrigerant charge and pressure test — Connect gauges to check refrigerant charge in both heating and cooling modes, and identify leaks or low pressure.

5. Defrost cycle and board inspection — Check the defrost sensor and control board, since a failed defrost cycle causes ice buildup on the outdoor unit, a common issue in Seattle’s damp winters.

6. Airflow inspection — Check the air filter, blower motor, and ductwork for restrictions limiting airflow.

7. Auxiliary/backup heat check — If your system has electric backup heat strips, we test whether they’re engaging correctly, since a failure here can hide a bigger heat pump problem behind what feels like “good enough” heat.

DECIDE

8. What’s actually wrong, explained simply — Heat pump issues aren’t always obvious since one problem can affect both heating and cooling. We walk you through the real cause in terms that make sense, not just a parts list.

9. A firm price before we start — You’ll know exactly what the repair costs and what’s included. We don’t touch the system until you say go.

REPAIR

10. Repair performed 🙂

11. Post-repair testing and walkthrough — We re-check pressures, temperatures, and airflow in both heating and cooling mode to confirm the system is fully operational, then explain what was wrong, what we did, and any recommendations going forward.

What Affects the Cost of Heat Pump Repair

Heat pump repair costs vary based on what’s actually wrong. Since these systems handle both heating and cooling, the part that failed and which mode it affects both play a role. Here are the main factors that affect your price.

Rooted in the Community We Serve

Cascadia Comfort isn’t just another name on a truck. We’re a PSE Trade Ally, a Kicking Gas partner helping Snohomish County families electrify their homes with heat pump upgrades, and a proud supporter of the local organizations that keep our community strong.

Seattle’s climate and housing stock create heat pump problems you won’t see everywhere. Here’s what we watch for.

  • Older homes, newer systems — Many Seattle-area homes were built for gas furnaces or baseboard heat, so retrofitting a heat pump means working around ductwork, electrical panels, or space constraints that weren’t designed for it.
  • Mild but damp winters — Our winters rarely get brutally cold, but the persistent damp and low temperatures mean defrost cycles run constantly, which is exactly where we see the most wear.
  • Marine air and moisture — Coastal humidity accelerates corrosion on outdoor units and electrical components.
  • Mixed system types — From older heat pumps in Eastside homes to newer ductless mini-splits in Seattle and Mill Creek, we service a wide range of setups.
  • Local permitting and rebate knowledge — We know what’s required for repairs and replacements across Snohomish and King County jurisdictions, and how to navigate Kicking Gas and PSE incentive programs.

PSE Trade Ally: Utility-verified contractor for Puget Sound Energy customers with a heat pump, or looking to get a heat pump

Kicking Gas Partner: Helping Snohomish County homeowners access electrification subsidies, with heat pump solutions

Free heat pump support for local nonprofits, including:

  • Think Twice
  • Adopt A Stream
  • Habitat for Humanity
  • Kiwanis
  • The Arc of Snohomish County

Why Homeowners Trust Cascadia Comfort for Heat Pump Repair

Mitsubishi-Approved for Heating and Cooling Systems

We’re an approved Mitsubishi Electric installer for heat pump equipment, a standard not every HVAC company qualifies for. If you have a Mitsubishi heat pump (or want one), you’re working with a vendor Mitsubishi itself has vetted.

Trained Across Every Type of Heat Pump

Ducted heat pumps, ductless mini-splits, single-zone, multi-zone, hybrid systems paired with a furnace, we work on all of it. Whatever’s heating and cooling your home, we’ve likely diagnosed and repaired one just like it.

We Diagnose the Full System, Not Just One Mode

A heat pump has to work correctly in both directions. We test heating and cooling performance separately, since a system can cool fine but fail to heat (or the reverse), and a diagnostic that only checks one mode misses half the problem.

We Test the Way the Manufacturer Intends

Heat pump diagnostics involve more moving parts than a standard AC, refrigerant charge, reversing valve function, and defrost cycle timing all have to check out. We follow manufacturer testing procedures for each, not shortcuts.

Seattle-Born, and We've Watched This Shift Happen

Our founders grew up here. They’ve watched Seattle shift from a city that rarely needed cooling to one where heat pumps are now the standard for both heating and cooling, and they understand how older Seattle homes hold onto heat and cold differently than newer construction. That local insight shapes how we diagnose and repair every system we touch.

What Seattle Homeowners Are Saying

Google star 1Google star 2Google star 3Google star 4Google star 5
The only downside of using Cascadia Comfort? You wish they just be the one that handle all sorts of work other than HVAC because they define what a fantastic service should be. They extremely responsive with communication, doesn't have any shady practice of charging you insane amount of visit fee that doesn't go towards the actual repair, reasonable pricing, and excellent use of technology to let you know who's coming and when are they coming for repair. The technician was extremely friendly and knowledge. He let me shadow him and explain every steps to me. I wish they can also be my landscaper, home repair, car repair....
Posted on Google Google
Tai chen (twnori) profile picture
Tai chen (twnori)
Google star 1Google star 2Google star 3Google star 4Google star 5
Fast efficient knowledgeable and courteous service. Much appreciated!
Posted on Google Google
Travis Groves profile picture
Travis Groves
Google star 1Google star 2Google star 3Google star 4Google star 5
Riley detailed the furnace/heat pump service and options for air filter replacement.
Posted on Google Google
bill fields profile picture
bill fields
Google star 1Google star 2Google star 3Google star 4Google star 5
Great experience, very knowledgeable and helpful, will use again for HVAC needs.
Posted on Google Google
Siuda75 profile picture
Siuda75
Google star 1Google star 2Google star 3Google star 4Google star 5
The folks from Cascadia were prompt, professional, and courteous. In addition to installing my heat pump, Regis made clear how it would operate and what I should do if I had any problems.
Posted on Google Google
Julie Titone profile picture
Julie Titone
Google star 1Google star 2Google star 3Google star 4Google star 5
Cascadia did a fantastic job replacing our furnace and installing a new heat pump for our home. Regis was super knowledgeable and pleasant to work with. Highly recommended!
Posted on Google Google
Sam Ma profile picture
Sam Ma
Google star 1Google star 2Google star 3Google star 4Google star 5
Nice company to work with. They were a low pressure high service install for our heat and AC. They answered all our questions, did the install in one day, and all worked well.
Posted on Google Google
Dan Haslam profile picture
Dan Haslam
Google star 1Google star 2Google star 3Google star 4Google star 5
Cascadia is a pleasure to work with and has very good and reasonable pricing. Riley, the technician who came out to service our furnace, AC, and heat pump systems, was a delight and extremely knowledgeable and helpful. I will definitely stick with Cascadia for all my HVAC needs long term.
Posted on Google Google
Leslie DeGasparis profile picture
Leslie DeGasparis
Google star 1Google star 2Google star 3Google star 4Google star 5
I am very pleased with Cascadia Comfort. Cascadia is responsive, professional, and fair in their pricing. They don't cut corners in their work or try to sell you on any unnecessary services or upgrades.
Posted on Google Google
John Folkestad profile picture
John Folkestad

Related Services

HEAT PUMP INSTALLATION

Adding a heat pump for the first time? We’ll help you find the right size and system for your home.

HEAT PUMP REPLACEMENT

When repairs stop making sense, we’ll help you choose a system built for how you actually use your home.

HEAT PUMP MAINTENANCE

Scheduled tune-ups catch reversing valve wear and defrost issues before they turn into no-heat emergencies.

INDOOR AIR QUALITY

Dust, pet hair, and clogged filters don’t just affect air quality, they make your heat pump work harder than it should.

MINI-SPLIT REPAIR

Ductless zone systems for additions, converted spaces, and rooms without existing ductwork.

ELECTRICAL

Panel upgrades to in-home EV charger. We’ll ensure there’s power behind your comfort.

Frequently Asked Heat Pump Repair Questions

Do you work on all heat pump brands, or only Mitsubishi?

We service all major heat pump brands. We’re a Mitsubishi-approved installer, which reflects our training standard, not a limit on what we repair.

We check the thermostat, electrical components, reversing valve, refrigerant charge, defrost cycle, and airflow to find the actual cause, not just the symptom. There’s a diagnostic fee for this visit, which we’ll confirm with you before we come out.

This is usually a reversing valve issue, a component standard AC systems don’t have. It can also point to a refrigerant problem. We’ll confirm the exact cause during diagnosis.

This typically means the defrost cycle isn’t working correctly. It’s a common issue in our damp Pacific Northwest winters and one we check on every heat pump diagnostic.

It depends on your system’s age, repair history, and cost relative to replacement. We’ll always give you a straight answer, even if that means recommending a repair instead of a sale.

Most repairs don’t require a permit. If your repair involves electrical work that does, we’ll handle that as part of the job.

Yes. As a PSE Trade Ally and Kicking Gas partner, we help Snohomish County homeowners navigate available electrification incentives.

We serve the Greater Seattle area from Arlington down to Tacoma, ready to help you with any Heat Pump needs.

Heat Pump Acting Up? Let's Fix It Today.

Same-day diagnostics, honest pricing, and repairs done right the first time. Call now and we’ll get you back to comfortable.