Furnace Services in SeaTac, WA
Expert furnace repair, replacement, and maintenance serving Angle Lake, McMicken Heights, Bow Lake, and all of SeaTac. Day & Night Elite Dealer with 10-year warranty. Served by Puget Sound Energy or Seattle City Light depending on the address — we confirm which before quoting a rebate.
Your SeaTac Furnace Experts
SeaTac homeowners in Angle Lake, McMicken Heights, and Bow Lake count on their furnaces to keep families warm through the long Pacific Northwest heating season. With 1950s-1970s ramblers and split-levels, apartment complexes, and moderate-density housing near the airport, the heating demands across SeaTac vary from home to home — but every residence needs a furnace that can handle the region's cold, wet winters. King County winters bring persistent rain, gray skies, and temperatures that regularly dip into the 30s, making reliable heat essential from October through April.
SeaTac is the code table station — the 24°F design temperature every neighboring city borrows is measured at the airport here — and many homes were re-insulated under the Port sound-insulation program, which changes the load calculation. Because the boundary runs through SeaTac rather than around it, the first thing we do is read your power bill — quoting a rebate you cannot claim is not a favour.
The Washington State Energy Code lists SeaTac at a 24°F winter design temperature (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between equipment that carries the house on its own and equipment that leans on expensive backup heat every cold snap. Natural gas here comes from Puget Sound Energy. In SeaTac we most often find electric baseboard and wall heaters in the 1950s–70s ramblers, gas forced air in split-levels, and Port of Seattle sound-insulation-program windows and insulation that changed the original load — so we quote what your house actually has, not what the average Puget Sound home has.
Furnace Services for SeaTac Homes
Why SeaTac Homeowners Choose Us
Fast Response
Based in Federal Way, we reach SeaTac quickly. Most furnace repairs are completed same-day, and installations are typically done within 24 hours of approval.
Know Local Codes
The mechanical permit for your furnace is issued by the City of SeaTac Community & Economic Development Department. We pull it, pay the fee, book the inspection and meet the inspector on site.
Understand Local Homes
In SeaTac we usually find electric baseboard and wall heaters in the 1950s–70s ramblers, gas forced air in split-levels, and Port of Seattle sound-insulation-program windows and insulation that changed the original load. We size to your house at the 24°F design temperature the state energy code sets for this area — not to a rule of thumb.
Heating Challenges for SeaTac Homeowners
Who bills you for power decides what you can claim. SeaTac is served by Puget Sound Energy or Seattle City Light depending on the address. PSE's current heat pump incentive is if PSE is the name on your power bill, up to $4,400 toward a qualifying heat pump replacing an existing electric or fossil-fuel system — the exact amount depends on what you are replacing and the equipment you install. PSE pays $1,500 for an electric-resistance conversion plus a $2,400 income-based boost; Seattle City Light runs its own program. We confirm which one you are on before quoting. Both programs pay only through their own approved installer lists — PSE has required a Trade Ally or Registered Energy Professional since April 2, 2026 — so the utility on your bill decides both the amount and who is allowed to earn it for you.
SeaTac does not share Seattle's weather, and the code says so. The Washington State Energy Code lists SeaTac at a 24°F winter design temperature (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between equipment that carries the house on its own and equipment that leans on expensive backup heat every cold snap. Kent is 21°F — a real gap for towns this close together. SeaTac is the milder side of that line, and equipment sized for the colder neighbor is equipment you paid too much for.
What we expect to find in a SeaTac home. The local stock runs to 1950s-1970s ramblers and split-levels, apartment complexes, and moderate-density housing near the airport. That usually means electric baseboard and wall heaters in the 1950s–70s ramblers, gas forced air in split-levels, and Port of Seattle sound-insulation-program windows and insulation that changed the original load. Gas service here comes from Puget Sound Energy. Whether replacing a furnace is the right answer for your house is something we tell you after we look at it, not before.
The parts of the job that are specific to this address. In SeaTac, the mechanical permit is issued by the City of SeaTac Community & Economic Development Department, and we pull it, pay it and meet the inspector; burn bans and wildfire-smoke advisories here are called by Puget Sound Clean Air Agency, which is the season that makes filtration worth specifying properly.
Quick Facts
Local details that change a furnace job in SeaTac
SeaTac is split between two power utilities running two different rebate programs, so half the table below depends on your address rather than your city. We check the bill before we quote.
- Electric utility
- Puget Sound Energy or Seattle City Light depending on the address (check your bill — the boundary runs through town)
- Natural gas
- Puget Sound Energy
- Winter design temp
- 24°F WSEC Table C-1, WAC 51-11C-80100
- Mechanical permit
- City of SeaTac Community & Economic Development Department
- Rebate program that applies
- PSE or Seattle City Light
- Burn bans & smoke advisories
- Puget Sound Clean Air Agency
- Heat we usually find
- electric baseboard and wall heaters in the 1950s–70s ramblers, gas forced air in split-levels, and Port of Seattle sound-insulation-program windows and insulation that changed the original load
“Vlad and his team were extremely professional. Constant communication, clean workmanship, and reasonable pricing for our furnace repair.”
— Darius T., Federal Way, WA
Furnace Questions from SeaTac Homeowners
Furnace replacement in SeaTac typically ranges from $4,000 to $8,000, depending on the furnace model, efficiency rating, and any ductwork modifications needed. High-efficiency condensing furnaces (96-98% AFUE) from Day & Night, Carrier, or American Standard are at the higher end of that range but deliver significantly lower monthly heating bills. We provide free in-home estimates with transparent, written pricing.
Yes. The mechanical permit is issued by the City of SeaTac Community & Economic Development Department, and Washington State requires one for this work. We handle the whole thing — application, fee, and meeting the inspector for the final — so you never contact the permit desk yourself. Every install meets or exceeds the current Washington State mechanical and energy codes.
Most furnace replacements in SeaTac are completed in one day. If your installation involves ductwork modifications, moving the furnace location, or switching from one fuel type to another, the project may take two days. We schedule installations to minimize disruption and always leave your home clean.
Many SeaTac homeowners are making the switch from gas furnaces to heat pump systems, and for good reason.PSE or Seattle City Light incentives may reduce your out-of-pocket cost — PSE pays up to $4,400 toward a qualifying heat pump replacing an electric or fossil-fuel system, with the exact amount set by what you are replacing and the equipment you install, and we confirm your eligibility before quoting rather than after. The Pacific Northwest climate is ideal for heat pump performance. If your furnace is at end-of-life, this is the perfect time to evaluate whether a heat pump, hybrid system, or new high-efficiency furnace is the best fit for your home and budget.
Common signs your SeaTac furnace needs replacement include: age over 15 years, frequent repairs, uneven heating between rooms, unusual noises like banging or squealing, yellow or flickering pilot light, rising energy bills despite normal usage, and visible rust or cracks on the heat exchanger. If you notice any of these issues, schedule a free inspection with Varsity Heating and Cooling.
Varsity Heating and Cooling installs Day & Night, Carrier, and American Standard furnaces in SeaTac. These are industry-leading brands built for the Pacific Northwest climate, offering 80-98% AFUE efficiency ratings. As a Day & Night Elite Dealer, we have access to the full product line and can match the right furnace to your home's specific heating needs and budget.
The Washington State Energy Code lists SeaTac at a 24°F winter design temperature (WAC 51-11C-80100, Table C-1). That is the number a Manual J load calculation for your home is run against, and it is the difference between equipment that carries the house on its own and equipment that leans on expensive backup heat every cold snap. A cold-climate heat pump holds its rated capacity well below that, which is why heat pumps genuinely work here rather than being a compromise. Gas here comes from Puget Sound Energy, and for some homes a hybrid — heat pump for most of the year, gas furnace for the coldest mornings — is the right answer. We will tell you if it is.
Furnace Services Near SeaTac
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