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Quick facts
- AreaSeattle
- StateWA
- Providers67
- Climate zone4C-Marine
- Heating degree days4,908
- Recommended systemheat pump dominant
Why Hvac matters in Seattle
Seattle sits in IECC climate zone 4C-Marine with average January temperatures of 42°F and July highs around 67.5°F. The moderate climate makes heat pumps an efficient choice for year-round comfort.
Mild marine climate ideal for heat pumps. WA Clean Buildings Act drives electrification. Gas furnaces common in older homes but heat pump conversions accelerating rapidly. Summer AC becoming essential after 2021 heat dome.
Heat pump recommended for Seattle
An air source heat pump is the ideal system for this climate zone — it heats in winter and cools in summer with one unit.
With mild winters (avg 42°F in January) and 4,908 heating degree days, heat pumps operate at peak efficiency year-round here. WA's push toward electrification means heat pumps also future-proof your home against potential gas restrictions.
About Seattle hvac
With 67 licensed hvac providers competing in Seattle, homeowners can usually get 2-3 quotes within a week and pricing tends to track regional averages. Homeowners in Seattle typically schedule maintenance in spring and fall to get ahead of peak-season wait times.
Seattle's climate (IECC zone 4C-Marine) keeps outdoor temps inside the efficient range of air-source heat pumps most of the year, with January averages around 42°F. That's why heat-pump conversions have overtaken straight AC + furnace installs in most of the local market. Homeowners in Seattle should expect seasonal pricing swings — spring and fall are the value windows for installs. Puget Sound Energy's PSE Heat Pump Rebate currently offers up to $4,000 toward a qualifying system, which meaningfully shifts the cost-of-ownership math.
Top local providers
Request quotes →- Greenwood Heating And Home ServicesTop ratedfurnace installationfurnace repairheat pump installationheat pump repair
What customers say “I cannot say enough good things about my experience with Greenwood Heating. From start to finish, their honesty,…”
- Olson Energy ServiceTop ratedfurnace installationfurnace repairheat pump installationheat pump repair
What customers say “We called Olson Energy Service as our air conditioning unit was not working as effectively as it had previously done…”
- Evergreen Home Heating And EnergyTop ratedfurnace installationfurnace repairheat pump installationheat pump repair
What customers say “I received 4 quotes to search for and repair our leaking ductless mini split system, installed by another company 5…”
- Glendale Heating Air ConditioningTop ratedfurnace installationfurnace repairheat pump installationheat pump repair
What customers say “We had a great experience with Glendale Heating & Air Conditioning. Our furnace wasn’t working and the house was…”
- furnace installationfurnace repairheat pump installationheat pump repair
What customers say “I needed a furnace check-up/ tune up. The technician Daniel showed up on time with an awesome attitude. Very…”
- furnace installationfurnace repairheat pump installationheat pump repair
What customers say “We just had our electrical panel upgraded, and Adrian and Zach were absolutely incredible! From the moment they…”
- Acco Engineered SystemsTop ratedindoor air qualitymaintenance planscommercial hvacelectrical
What customers say “These guys are amazing! We had an urgent issue at our office in downtown Seattle, I was able to get in touch with their…”
- furnace installationfurnace repairheat pump installationheat pump repair
What customers say “Was having issues with circuit breaker continually tripping. Norman showed up promptly and did a thorough inspection…”
- furnace installationfurnace repairthermostat installationmaintenance plans
What customers say “This is the second time I used 2 Sons Plumbing. This project was to install a toilet. Like the first time, the toilet…”
- furnace installationfurnace repairheat pump installationheat pump repair
What customers say “When our washing machine failed in the middle of a cycle, I booked an appointment online at 1:30am and got a call at…”
- Seattle Heating CoolingTop ratedfurnace installationfurnace repairheat pump installationheat pump repair
What customers say “When our washing machine failed in the middle of a cycle, I booked an appointment online at 1:30am and got a call at…”
- heat pump repairac repairductless mini splitindoor air quality
What customers say “I received 4 quotes to search for and repair our leaking ductless mini split system, installed by another company 5…”
- furnace installationfurnace repairac installationac repair
What customers say “(Review has been edited after completion of work) Eco Electric and Plumbing was awesome from start to finish! Nate…”
- Progressive Comfort SolutionsTop ratedheat pump installationheat pump repairac installationac repair
What customers say “This AC Install company is the best! I was so impressed with the level of professionalism, great communication,…”
- Glendale Heating A CTop rated
What customers say “We had a great experience with Glendale Heating & Air Conditioning. Our furnace wasn’t working and the house was…”
What Seattle homeowners say
“Great experience at ACI Mechanical. I visited looking for a plenum to complete my make-up air system that I was building. Except that I did not know it was called a plenum, because I could not speak HVAC. That’s when they called in Hannah, who pat…”
“Alvaro helped hunt down an issue with some funky thermometer wiring that had another HVAC crew baffled and quoting me a $1K repair charge on my furnace. When he started his own business, I happily followed him, and he and Terry replaced my furnace a …”
“Dan is the MAN! HVAC Expert- It is a small business so Trust the Care is excellent- He is pretty flexible try to add you in in next couple days for urgent issues, however be patient as he drive Eastside and Seattle area - I am always happy when he co…”
Local pricing snapshot
Repairs typically run $150–$600. Full system replacements range from $4k for a basic furnace to $12k+ for a premium heat pump. Heat pumps are the recommended system for this climate zone, offering both heating and cooling in one unit.
Available rebates in Seattle
- Puget Sound Energy: PSE Heat Pump Rebate — $1,500–$4,000 for heat pump
- Puget Sound Energy: PSE Ductless Heat Pump Rebate — $800–$2,500 for ductless
- Puget Sound Energy: PSE Smart Thermostat Rebate — $75–$75 for thermostat
- Puget Sound Energy: PSE Insulation Rebate — $500–$2,000 for insulation
Federal tax credits (up to $2,000 for heat pumps) can stack with utility rebates. See full cost breakdown →
Nearby service areas
Washington hub →Popular comparisons in Seattle
- Greenwood Heating And Home Services vs Evergreen Home Heating And Energy4.9★ vs 4.8★
- Evergreen Home Heating And Energy vs Glendale Heating Air Conditioning4.8★ vs 4.8★
- Evergreen Home Heating And Energy vs Brennan Heating Air Conditioning Electric4.8★ vs 4.6★
- Glendale Heating Air Conditioning vs Brennan Heating Air Conditioning Electric4.8★ vs 4.6★
- Glendale Heating Air Conditioning vs South West Plumbing Heating Air Electric4.8★ vs 5.0★
- Brennan Heating Air Conditioning Electric vs South West Plumbing Heating Air Electric4.6★ vs 5.0★
Related research
Frequently Asked Questions
What's the best heating system for Seattle?
Seattle is in IECC climate zone 4C-Marine with mild winters (avg January: 42°F). Air source heat pumps are the recommended system — they provide both heating and cooling efficiently in this marine climate, and qualify for substantial utility and federal rebates.
What hvac rebates are available in Seattle?
Seattle homeowners can stack multiple incentives: Puget Sound Energy offers up to $4,000 for heat pump installations. Add the federal 25C tax credit ($2,000) and WA sales tax exemption on qualified heat pumps (saves $500-$1,500), and total savings can reach $7,500+. Ask your installer to itemize which rebates apply to your specific project.
How much does hvac work cost in Seattle?
In Seattle, typical costs range from $150-$600 for repairs, $4,000-$8,000 for a standard furnace or AC replacement, and $6,000-$14,000 for a heat pump system. After available rebates, heat pump installations often net out to $4,000-$9,000. Get 2-3 written quotes to compare — prices vary significantly between contractors.
How do I verify a hvac contractor is licensed in Washington?
All HVAC contractors in Washington must hold a specialty contractor license from the Department of Labor & Industries (L&I). Verify any contractor at secure.lni.wa.gov/verify — search by business name. Confirm they have active status, a current specialty-contractor surety bond ($6,000 under RCW 18.27.040; general contractors post $12,000), and workers' comp coverage. Never hire an unlicensed contractor.
Licensing verified weekly. Reviews refreshed within the last 30 days.
Licensing data: Washington Department of Labor & Industries (L&I) · Company data: verified business records + Google Business profile
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