Heat Pump Replacement in Bellingham, WA

Questions Bellingham homeowners actually ask

Should I repair my heat pump or replace it?

Replace when the repair is a major component on equipment past twelve to fifteen years, when the refrigerant circuit leaks repeatedly, or when the system was the wrong size to begin with. Repair when the failure is a control, a capacitor, a motor or a valve on a system that is otherwise sound and correctly sized. We give you both numbers on the same visit, including the age and refrigerant type.

How long do heat pumps last in Whatcom County?

Manufacturers and local shops generally talk about twelve to fifteen years here, with maintained systems running longer. Salt air is the local variable: one regional installer reports coastal exposure shortening equipment life by two to four years without corrosion protection. Near the water, coated coils and siting the unit out of direct salt spray are worth the money.

Can you reuse my existing lineset, pad and ductwork?

Sometimes, and we say which in the quote rather than after the fact. Pads and many duct transitions carry over; a lineset can be reused when the diameters suit the new equipment and it can be properly cleaned, but a lineset contaminated by a compressor burnout gets replaced. Indoor coils are replaced as a matched pair with the outdoor unit, because a mismatched pair voids the rating the rebate and the warranty depend on.

My old system only cools. Should the replacement be a heat pump?

Almost always, yes. A heat pump is a cooling-only condenser that can also run backwards, and the price difference is small compared with what it saves against electric resistance heat. Going to a heat pump is also what makes you eligible for PSE’s $1,500 electric-resistance conversion rebate, which a cooling-only replacement does not.

Is there a PSE rebate for replacing one heat pump with another?

Yes, PSE runs a heat pump to heat pump upgrade rebate at $1,500, or $2,400 with Efficiency Boost, but it is ducted systems only — ductless is not eligible for that particular program. It is also contractor-gated like the rest of PSE’s heat pump rebates, so ask us to confirm our network status for your project before you count the money. If your existing heat is actually electric resistance rather than a heat pump, the conversion rebate is the one that applies instead.

Do I have to replace the indoor air handler too?

For a ducted system, effectively yes. The published efficiency rating belongs to a specific outdoor unit paired with a specific coil or air handler. Mixing an old coil with new outdoor equipment gives you neither the rating nor a clean warranty, and no AHRI certificate to hand a rebate program. On a ductless changeout the indoor heads can occasionally stay if they are the same generation and in good order, which we check rather than assume.

What do the new A2L refrigerants mean for my replacement?

New residential equipment has moved to lower-global-warming A2L refrigerants such as R-454B, which changes service procedures, leak detection and parts, but not how the system feels to live with. Practically, R-410A equipment is now legacy, and a system needing frequent large charges of it is one to plan around rather than keep topping off. Your technician also needs different tooling, which is worth asking any bidder about.

How long does a changeout take?

One to two days for like-for-like. The old refrigerant has to be recovered, the old equipment removed, the new set placed, the circuit pressure-tested and evacuated, and the system commissioned, and none of that compresses into an afternoon. If the plenum, coil or lineset has to be rebuilt, plan for a third day.

Do I need a permit to replace an existing heat pump?

Yes. Replacing mechanical equipment requires a mechanical permit even though the old system was already there, and we pull it and meet the inspector. City addresses go through City of Bellingham Building Services on eTRAKiT and unincorporated addresses through Whatcom County Planning and Development Services, a distinction that catches out a lot of homeowners whose mail says Bellingham.

What does a heat pump replacement cost here?

Aggregated Bellingham job data runs $2,793 to $10,058 with a typical band of $5,301 to $6,973, and replacements tend to sit in the upper half of that band. The extras a replacement carries and a new install does not are refrigerant recovery, disposal of the old equipment, a matched indoor coil, and correcting electrical or duct work that was marginal the first time. We itemise those rather than folding them into one number.

Can I still claim a federal credit on the replacement?

No. The federal §25C and §25D credits terminated for property placed in service after December 31, 2025, per P.L. 119-21 and IRS FS-2025-05, so a 2026 replacement gets nothing federal. That makes the PSE rebate and the equipment-tier discount the only real money on the table.