What are the signs my heat pump needs repair?

The reliable ones are: auxiliary heat running in mild weather, ice on the outdoor unit that never clears, a system that short-cycles, a big jump in the electric bill with no change in the weather, and new noises such as grinding, screeching or a hard clunk on start. A heat pump that runs long cycles in cold weather is normal; one that runs constantly at 45°F is not.

Do you charge for a diagnostic visit?

Yes, $89.99 as a trip charge, and it is refunded as company credit if you accept the bid. We would rather quote that number openly than advertise a free visit and recover it in the repair price. If your problem turns out to be something you can fix yourself, such as a tripped breaker or a filter, we will try to get you there on the phone at no charge.

Do you answer emergency calls?

Regular hours are Monday to Friday, 8:00 AM to 5:30 PM, and emergency calls are answered 24/7. Someone picks up, and we triage. In a cold snap every shop in the county is booked, so call early in the day and have the model number ready.

My outdoor unit is covered in ice. Is that normal?

A light frost that clears during a defrost cycle every hour or so is normal in Bellingham’s damp winter air; a solid block of ice that stays for a day is not. Persistent icing usually means a failed defrost control, sensor or reversing valve, low charge, or a unit sitting where water drains into it rather than away. Do not chip at it with anything metal, since the coil is soft aluminium and the fins puncture easily.

Why is my heat pump blowing cool air in heating mode?

A heat pump’s supply air is genuinely cooler than a furnace’s, around 95°F to 105°F rather than 120°F, so it can feel cool against your hand while still heating the house correctly. If the house is actually losing temperature, the likely causes are a stuck reversing valve, low refrigerant charge, or a defrost cycle running longer than it should. The distinction between feels cool and is not heating is the first thing we establish.

What are the common heat pump problems that need a professional?

Refrigerant leaks, compressor and reversing valve failures, defrost control faults, blower or outdoor fan motor failures, and electrical faults in contactors and capacitors. The first three all require opening or measuring the sealed refrigerant system, which federal rules under 40 CFR Part 82 restrict to Section 608 certified handling. Filters, clearing debris from around the outdoor unit, and keeping the condensate path clean are the parts genuinely worth doing yourself.

Will you work on a system another company installed?

Yes, whatever the badge on it. We service ducted heat pumps and ductless systems from the major manufacturers, including Daikin, Mitsubishi Electric, Fujitsu and Bosch, plus older equipment that is no longer sold here. If the failed part is proprietary and no longer available, we will tell you that early rather than after a week of chasing it.

Can you just top off the refrigerant?

Not as a plan, because a sealed system does not consume refrigerant. If it is low, it leaked, and adding more without finding the leak means paying for refrigerant that will end up in the atmosphere and a system that fails again. We locate the leak and price the repair, and if the leak is in an old coil, that is when replacement genuinely deserves consideration.

At what point should I stop repairing and replace?

When a major sealed-system component fails on equipment past twelve to fifteen years, when there are multiple leaks, or when the system was the wrong size from the start. We give you the repair cost and a replacement quote at the same visit so you can compare rather than commit under pressure. Homes near saltwater reach that point earlier, since salt air has been reported to shorten equipment life by two to four years without corrosion protection.

Do I need a permit for a heat pump repair?

No. Repairing existing equipment in place is not permitted work, unlike installing or replacing a system, which does require a mechanical permit from City of Bellingham Building Services or Whatcom County Planning and Development Services. If a diagnosis turns into a replacement, the permit becomes part of that project and we file it.

Is there any rebate that covers a repair?

No. PSE’s heat pump incentives pay for installing qualifying new equipment, not for fixing what you have, and there is no federal credit for either since §25C ended for property placed in service after December 31, 2025. If the repair conversation turns into a replacement, the rebate picture changes completely.

Heat Pump Repair in Bellingham, WA | Bellingham Heating & Cooling

WA L&I #BELLIHC808NM Active registration — verify it with the state
$30,000 bonded Surety bond on file with L&I
$1,000,000 insured General liability coverage
Local since 2020 Owner-operated in Whatcom County
We pull the permit City of Bellingham or Whatcom County, and we meet the inspector

What people call us about

The house is not getting warm, the outdoor unit is either silent or covered in ice, and the strips are running so hard you can hear the meter in the bill. Maybe it worked last week and quit in the first cold snap, which is when everyone else in the county is calling too. You want the failed part named, the cost stated, and an honest read on whether this equipment is worth another repair.

This is your job if

The outdoor unit is iced over and stays iced, so defrost is not clearing it.
The system runs constantly and never satisfies, and the auxiliary heat light has been on for days.
It short-cycles: starts, runs a minute or two, and shuts down again.
It cools fine but will not heat, or heats fine but will not cool, which points at the reversing valve.
You have added refrigerant more than once in three years, which means there is a leak to find rather than a charge to top off.

How the job actually goes

Take the details on the phone

We ask what it is doing, what changed, whether the breaker has tripped, and whether the thermostat is calling for auxiliary heat, before anyone drives anywhere. Some no-heat calls turn out to be a tripped breaker, a thermostat in the wrong mode, or a filter so loaded that the airflow safety cut out, and we would rather tell you that on the phone. Regular hours are Monday to Friday, 8:00 AM to 5:30 PM, and emergency calls are answered 24/7.

Your part: Check the breaker, the thermostat mode, and the filter before we come out, and tell us the model number off the outdoor unit if you can read it.
Diagnose on site, with the trip charge disclosed up front

Diagnosis is an $89.99 trip charge, refunded as company credit if you accept the bid, so you know the cost of finding out before we arrive. We check refrigerant pressures and temperatures, the electrical side, defrost operation and controls, and airflow, rather than guessing from symptoms. Refrigeration work is core to this shop’s trade, which matters when the problem is inside the sealed system rather than in the wiring.

Your part: Give us access to the indoor equipment, the outdoor unit, and the electrical panel, and clear anything stacked against the air handler.
Name the failed component and price the repair

You get the part, the cause, the cost, and an assessment of what else on that system is close to failing. If the diagnosis is a leak we tell you where it is and whether it is a repairable joint or a coil, because a coil leak on old equipment changes the conversation entirely. Federal rules under 40 CFR Part 82 require Section 608 certification to handle refrigerant, which is why topping off a leaking system indefinitely is not something a shop can responsibly do.

Your part: Ask for the repair number and the replacement number together, then decide with both in front of you.
Repair, or say plainly that it is not worth it

Common repairs get done on the visit when the part is on the van: capacitors, contactors, defrost boards, sensors, fan motors and control wiring. Sealed-system work and compressors are ordered, with a date. If the equipment is fifteen years old with a failed compressor and a leaking coil, we will tell you that the repair is a bad use of your money instead of taking it.
Verify the fix before leaving

After any repair we run the system in the mode that failed and confirm it with measurements: pressures and superheat or subcool where the sealed system was opened, temperature split across the coil, amp draw, and a forced defrost cycle when defrost was the complaint. Nitrogen pressure testing and evacuation to a micron gauge apply to any repair that opened the refrigerant circuit, exactly as they would on a new install.

Your part: Stay for the last five minutes so you can hear what failed, what we changed, and what to watch for.
Tell you what would prevent the next one

Most of what we find is preventable: filters left in for a year, an outdoor coil packed with cottonwood fluff or fir needles, a condensate drain growing algae, or a blower wheel loaded enough to strangle airflow. We say which of those contributed, and whether an annual tune-up would have caught it.

Permits

A repair to existing equipment in place does not require a mechanical permit. If the diagnosis leads to replacing the system, a permit is required and we pull it. It comes from City of Bellingham Building Services or Whatcom County Planning and Development Services depending on whether the address is inside city limits, which many Bellingham-addressed properties are not.

Equipment we install

Daikin

Aurora single-zone wall-mount and floor-mount heat pumps · Atmosphera R-32 single-zone wall-mount heat pumps · MXM and MXT multi-zone outdoor units · SkyAir light commercial split systems · Daikin FIT ducted inverter heat pumps and matched air handlers

Daikin is the line we install most often, for unglamorous reasons: the ductless equipment is good, the registered parts term is long, and the seasonal instant rebates are real money on a tightly priced job. It is not the strongest sub-zero machine on the market, and at a 19°F design temperature it does not need to be. Two honest cautions: Daikin runs a large dealer program in Whatcom County, so shop the installer and the scope of work rather than the logo on the brochure. And the industry move to R-32 means an older R-410A Daikin already in your house sits on a different parts path than anything current we would quote you.

Mitsubishi Electric

M-Series single-zone ductless systems · Hyper-Heating INVERTER (H2i) and H2i plus outdoor units · MXZ multi-zone outdoor units · SVZ air handlers and SEZ concealed ducted indoor units · P-Series light commercial equipment

This is the equipment to buy when the building is genuinely hard: a mountain cabin, a leaky 1920s four-square, or a multi-zone layout with long linesets and awkward head placement. The low-temperature engineering is the best documented in the industry, the controls are the best to live with, and the heat pump carries the load instead of handing off to strip heat every January. The counterpoint is money: on a tight, well-insulated house at 19°F you are paying a premium for capacity below zero that Bellingham weather will not request. The headline 12-year warranty is also gated behind a contractor program, so compare the ten-year reality against a Daikin or Fujitsu bid.

Fujitsu

Halcyon residential ductless systems · AIRSTAGE H-Series residential ductless systems · XLTH extra-low-temperature-heating outdoor units · AIRSTAGE Orion XLTH and Altair 500 R-32 single-zone wall mounts · AIRSTAGE Aquila multi-room outdoor units for two to five zones

Fujitsu is the value play in the ductless field and it is badly underexposed here, mainly because no Whatcom County contractor bothers to market it. The XLTH hardware suits a cold, snowy foothills site well, and a Fujitsu bid usually lands under a comparable Mitsubishi bid for similar published performance. The real drawback is logistics rather than engineering: fewer distributors here stock Fujitsu inverter boards and sensors, so a failed control board can mean waiting on a shipment instead of a same-week repair. The Halcyon-to-AIRSTAGE rebrand also makes parts lookups genuinely confusing when you are matching components to a unit installed five years ago.

Bosch

IDS Light inverter ducted split heat pumps · IDS Premium Connected inverter ducted split heat pumps · IDS Ultra cold-climate inverter ducted split heat pumps · Climate 5000 single-zone and multi-zone ductless systems · Matched air handlers and coils for the IDS family

Bosch is a ducted-retrofit brand and that is squarely where we would use it: a 1990s house with serviceable ductwork and a dying electric furnace. One modulating ducted unit beats hanging four heads on the walls of a house that already has a distribution system, the cabinet is compact, and the bid usually undercuts a comparable Daikin FIT. Two reservations, stated plainly: the Climate 5000 ductless line is not in the same conversation as Daikin, Mitsubishi or Fujitsu ductless, and we would not lead with it. The Bosch dealer footprint in Whatcom County is also thin, which is a parts-availability question you should put to anyone who quotes it, including us.

Sized for 19°F, not for a rule of thumb

Washington's energy code puts Bellingham's outdoor heating design temperature at 19°F — colder than Sea-Tac's 24°F. We size from a load calculation against that number and spec equipment on its capacity at 5°F, because that is the figure that decides whether your auxiliary heat strips run all winter.

Bellingham sits in climate zone 4C (marine): heating-dominated, damp, rarely below 10°F. It is close to ideal heat pump territory, provided the system is not oversized.

Heat pump operating in freezing conditions outside a Pacific Northwest home

Questions Bellingham homeowners actually ask

What are the signs my heat pump needs repair?: The reliable ones are: auxiliary heat running in mild weather, ice on the outdoor unit that never clears, a system that short-cycles, a big jump in the electric bill with no change in the weather, and new noises such as grinding, screeching or a hard clunk on start. A heat pump that runs long cycles in cold weather is normal; one that runs constantly at 45°F is not.
Do you charge for a diagnostic visit?: Yes, $89.99 as a trip charge, and it is refunded as company credit if you accept the bid. We would rather quote that number openly than advertise a free visit and recover it in the repair price. If your problem turns out to be something you can fix yourself, such as a tripped breaker or a filter, we will try to get you there on the phone at no charge.
Do you answer emergency calls?: Regular hours are Monday to Friday, 8:00 AM to 5:30 PM, and emergency calls are answered 24/7. Someone picks up, and we triage. In a cold snap every shop in the county is booked, so call early in the day and have the model number ready.
My outdoor unit is covered in ice. Is that normal?: A light frost that clears during a defrost cycle every hour or so is normal in Bellingham’s damp winter air; a solid block of ice that stays for a day is not. Persistent icing usually means a failed defrost control, sensor or reversing valve, low charge, or a unit sitting where water drains into it rather than away. Do not chip at it with anything metal, since the coil is soft aluminium and the fins puncture easily.
Why is my heat pump blowing cool air in heating mode?: A heat pump’s supply air is genuinely cooler than a furnace’s, around 95°F to 105°F rather than 120°F, so it can feel cool against your hand while still heating the house correctly. If the house is actually losing temperature, the likely causes are a stuck reversing valve, low refrigerant charge, or a defrost cycle running longer than it should. The distinction between feels cool and is not heating is the first thing we establish.
What are the common heat pump problems that need a professional?: Refrigerant leaks, compressor and reversing valve failures, defrost control faults, blower or outdoor fan motor failures, and electrical faults in contactors and capacitors. The first three all require opening or measuring the sealed refrigerant system, which federal rules under 40 CFR Part 82 restrict to Section 608 certified handling. Filters, clearing debris from around the outdoor unit, and keeping the condensate path clean are the parts genuinely worth doing yourself.
Will you work on a system another company installed?: Yes, whatever the badge on it. We service ducted heat pumps and ductless systems from the major manufacturers, including Daikin, Mitsubishi Electric, Fujitsu and Bosch, plus older equipment that is no longer sold here. If the failed part is proprietary and no longer available, we will tell you that early rather than after a week of chasing it.
Can you just top off the refrigerant?: Not as a plan, because a sealed system does not consume refrigerant. If it is low, it leaked, and adding more without finding the leak means paying for refrigerant that will end up in the atmosphere and a system that fails again. We locate the leak and price the repair, and if the leak is in an old coil, that is when replacement genuinely deserves consideration.
At what point should I stop repairing and replace?: When a major sealed-system component fails on equipment past twelve to fifteen years, when there are multiple leaks, or when the system was the wrong size from the start. We give you the repair cost and a replacement quote at the same visit so you can compare rather than commit under pressure. Homes near saltwater reach that point earlier, since salt air has been reported to shorten equipment life by two to four years without corrosion protection.
Do I need a permit for a heat pump repair?: No. Repairing existing equipment in place is not permitted work, unlike installing or replacing a system, which does require a mechanical permit from City of Bellingham Building Services or Whatcom County Planning and Development Services. If a diagnosis turns into a replacement, the permit becomes part of that project and we file it.
Is there any rebate that covers a repair?: No. PSE’s heat pump incentives pay for installing qualifying new equipment, not for fixing what you have, and there is no federal credit for either since §25C ended for property placed in service after December 31, 2025. If the repair conversation turns into a replacement, the rebate picture changes completely.

Before you decide

Get a quote for heat pump repair

Tell us what you have now. We will tell you what fits and what it costs.

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Heat Pump Repair in Bellingham, WA

What people call us about

This is your job if

How the job actually goes

Take the details on the phone

Diagnose on site, with the trip charge disclosed up front

Name the failed component and price the repair

Repair, or say plainly that it is not worth it

Verify the fix before leaving

Tell you what would prevent the next one