12 Best Heat Pump Installation in Seattle, WA (2026) — Vetted
Why Seattle's damp winters change how you pick a Heat Pump Installation pro
Seattle's long, damp winters and October–April rainy season increase the value of efficient heating and moisture‑resilient installs. When comparing best heat pump installation companies in Seattle, Washington, look for installers experienced with tight, damp homes in Capitol Hill and Ballard. They should size systems for mild summers and occasional freezes.
What separates Seattle firms with the highest review counts and long warranties
| # | Provider | Score | Years | |
|---|---|---|---|---|
| 1 | EEvergreen Home Heating and Energy | 89 | 4.8 (1,000+) | 51+ |
Editorial: Mitsubishi Authorized Dealer for heat pumps, per their site. Family-owned business operating for 50+ years. Lists Seattle City Light clean-heat rebates and local incentives. Reviews note priority scheduling and club-member maintenance benefits. Strengths:
Reviewers praise:
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| 2 | GGreenwood Heating and Home Services | 87 | 4.9 (4,725+) | 105+ |
Editorial: Greenwood Heating and Home Services lists ducted air-source heat pump installation as a core specialty. Greenwood Heating and Home Services notes serving Seattle since 1921, an operation spanning 105+ years. Greenwood Heating and Home Services says financing is available for larger HVAC projects. Greenwood Heating and Home Services operates in Seattle's mild, maritime climate where heat pumps perform efficiently. Strengths:
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| 3 | SSouth West Plumbing, Heating, Air, & Electric | 87 | 5.0 (1,210+) | 44+ |
Editorial: Ducted air-source heat pump installation is listed among their HVAC specialties. South West Plumbing, Heating, Air, & Electric reports service in Seattle since 1982. Seattle's damp, mild climate favors heat pumps over fossil alternatives. The company advertises same-day installs and 24/7 emergency availability. Strengths:
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| 4 | 22 Sons Plumbing, Sewer, Septic, Electric, Heating & Air | 86 | 4.9 (3,910+) | 9+ |
Editorial: 2 Sons Plumbing advertises upfront pricing and financing options for larger projects. The company states emergency service is available, advertised 24/7. 2 Sons Plumbing reports serving Seattle neighborhoods with older homes and aging utilities. The business lists family-owned operations and shows 5+ years in business experience. Strengths:
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| 5 | GGlendale Heating & Air Conditioning | 84 | 4.8 (705+) | 88+ |
Editorial: Ducted air-source heat pump installs are a stated specialization. Glendale Heating lists Lennox Dealer status on their site. Years in business: 85+ years serving Puget Sound homes. Glendale says they provide flat-rate quotes and same-week scheduling. For Seattle homes, mild winters reduce backup-heat reliance on modern heat pumps. Strengths:
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| 6 | HHotWire Furnace, Air Conditioning & Appliance Repair Seattle | 81 | 5.0 (240+) | |
Editorial: HotWire lists ducted air-source heat pump installation as a core service. Strengths:
Reviewers praise:
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| 7 | BBrennan Heating, Air Conditioning, & Electric | 80 | 4.5 (2,240+) | 39+ |
Editorial: Brennan Heating lists ducted Lennox heat pumps alongside free energy consultations. The company traces back 35+ years serving Western Washington. Seattle's mild, damp winters favor efficient heat pump performance and electrification. Customer feedback often highlights punctual crews and tidy, explanatory installations. Strengths:
Reviewers praise:
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| 8 | OOlson Energy Service | 76 | 4.8 (375+) | 100+ |
Editorial: Olson Energy Service states their team installs ducted air-source heat pumps. Olson Energy Service states they perform oil and gas conversions to heat pumps. Olson Energy Service reports flat-rate pricing and financing via Puget Sound Cooperative Credit Union. Olson Energy Service has served Seattle since 1926, marking over 100 years of operation. Olson Energy Service notes factory-trained, licensed technicians on staff. Strengths:
Reviewers praise:
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| 9 | PProgressive Comfort Solutions | 74 | 4.9 (155+) | 16+ |
Editorial: Progressive Comfort Solutions focuses on Mitsubishi ducted and ductless heat pump installations. The company states Mitsubishi Electric Diamond Preferred Contractor status and Premier Dealer recognition. Founded in 2010, they report 15+ years serving Seattle homeowners. They note a $2,000 Clean Heat instant rebate for qualifying upgrades. Same-day service and responsive scheduling are advertised on their site. Strengths:
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| 10 | GGo Green Heating AC & Electric | 71 | 4.8 (225+) | 10+ |
Editorial: Ducted air-source heat pump installation is a stated specialty on Go Green Heating's site. The company notes licensed WA contractor status and lists operations since 2016. Go Green Heating advertises financing options for higher-ticket installs. The site reports same-day emergency response for local HVAC issues in Seattle's maritime climate. Strengths:
Reviewers praise:
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| 11 | AALPHA HEATING, COOLING, PLUMBING & ELECTRICIAN | 68 | 5.0 (10+) | 15+ |
Editorial: Alpha lists ducted heat-pump specialist work and full furnace-to-heat-pump conversions. Strengths:
Reviewers praise:
Reviewers flag:
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| 12 | OOne Hour Heating & Air Conditioning | 66 | 5.0 (30+) | |
Editorial: One Hour Heating & Air Conditioning of Central Seattle lists ducted heat pump installation. The company states a two-year labor warranty on materials and labor. One Hour advertises financing options for higher-ticket system installs. Local Seattle winters and mild summers suit heat-pump systems for efficient year-round comfort. Strengths:
Reviewers praise:
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Typical Heat Pump Installation costs in Seattle, WA (2026)
Last updated
Estimated ranges for Seattle, WA. Actual cost varies with home size, equipment, and scope — always request a written quote for your job.
| Service | Typical range |
|---|---|
| Ducted air-source heat pump + air handler, full system (installed) | $9,600–$19,200 |
| Premium variable-speed / inverter system (installed) | $18,000–$30,050 |
| Cold-climate (hyper-heat) premium (over standard air-source) | $1,800–$4,800 |
| Air handler replacement (paired with heat pump) | $1,800–$4,200 |
| Ductwork modification (resize / re-balance per Manual D) | $720–$2,650 |
| Geothermal (ground-source) system — premium alternative (installed) | $18,000–$42,050 |
| Geothermal loop field — drilling/trenching (per ft installed) | $10–$40 |
Nearby Washington heat pump installation pricing: Auburn · Bellevue · Bellingham
See broader context: Heat Pump Installation pricing in Washington · Heat Pump Installation pricing nationwide
How were these Seattle Heat Pump Installation picks evaluated?
This guide evaluated 12 Seattle heat pump installation providers on verified review counts, advertised service signals, and documented credentials. Key signals were Google review data, advertised emergency response and pricing models, plus manufacturer‑dealer and certification claims listed by providers.
- Greenwood Heating and Home Services shows 4.9/5.0 across 4,725+ reviews, per Google Maps data.
- Evergreen Home Heating and Energy lists Mitsubishi dealer status and free estimates, as stated on its site.
- ALPHA HEATING, COOLING, PLUMBING & ELECTRICIAN reports Manual J sizing and NATE certification on its profile.
- Olson Energy Service and 2 Sons list flat‑rate pricing; the cards state flat‑rate models for both providers.
- HotWire and Progressive Comfort Solutions note EPA 608 or manufacturer dealer credentials, as captured in provider signals.
Evaluation drew on Google review aggregates and provider‑reported service details, with support from available accreditation records.
How do I choose a Heat Pump Installation Company in Seattle?
- Verify provider Google ratings and review counts for local performance.
- Compare advertised pricing models, including flat‑rate and free estimates.
- Confirm certifications and dealer status, such as EPA 608 or manufacturer dealer listings.
- Request written warranties, labor terms, and permit handling details.
- Check advertised emergency response and financing options before booking.
5 Heat Pump Installation pitfalls Seattle homeowners see again and again
Most common heat pump installation problems in Seattle stem from the long October–April rainy season and persistent humidity, which increase moisture, corrosion and drainage failures. Installations can also be affected by designers underestimating dehumidification needs and by occasional freezing events that stress defrost controls.
- Corrosion and moisture damage. Seattle's prolonged damp winters accelerate corrosion of outdoor units and electrical components, causing premature failures when installers do not specify moisture‑resistant materials.
- Poor condensate drainage. Heavy fall and winter rains in Seattle can overwhelm inadequate condensate routing, leading to backups, indoor leaks, and water damage near indoor units.
- Undersized or mismatch sizing from mild‑climate assumptions. Assuming Seattle's mild summers alone allows smaller heat pumps can leave systems undersized for sustained rainy‑season heating and humidity control.
- Defrost and refrigerant performance issues. Rare Seattle freeze events still trigger frequent defrost cycles; improper refrigerant charge or defrost settings increase wear and reduce efficiency.
- Site and permit complications around environmental rules. Seattle's Environmental Critical Areas and SDCI permitting can delay installs and require special drainage or setback measures, complicating exterior unit placement.
How Seattle's neighborhoods, rainy season and contractor registration shape installations
Seattle's long October–April rainy season and persistent humidity drive demand for moisture‑resilient heat pump installs and better drainage. Homeowners seeking the best heat pump installation companies in Seattle, Washington prioritize installers who size systems for humid heating loads and who plan robust condensate routing for neighborhoods like Ballard and Queen Anne.
Condition: long, damp rainy season across Seattle neighborhoods including Capitol Hill and Fremont.
Impact: persistent humidity increases corrosion risk and condensate volume for outdoor and indoor units.
Capability link: evaluated providers commonly list state licenses and certifications and emergency service availability. These credentials support correct refrigerant handling and faster response to wet‑season failures.
Condition: local permitting and contractor registration requirements through SDCI and L&I.
Impact: installs often require permits, environmental setbacks, and documented contractor registration before work begins.
Capability link: many evaluated installers advertise permit navigation experience and paperwork handling, reducing schedule delays during complex site approvals.
Condition: varied housing stock from older bungalows to newer condo builds.
Impact: compact yards and limited exterior space constrain outdoor unit placement and condensate routing options.
Capability link: look for providers who offer flat‑rate quotes, site surveys, and moisture‑resistant materials, and who specify dehumidification and defrost controls suited to Seattle's climate.
Which Seattle Heat Pump Installation question do most homeowners ask first?
- How do I get a quote from these heat pump installation companies?
- Submit one request on this page and we send it to the vetted heat pump installation pros in Seattle, WA listed here. They send quotes back — no obligation.
- How much does heat pump installation service cost in Seattle, WA?
- Ducted air-source heat pump + air handler, full system typically runs $9,600–$19,200, and geothermal system — premium alternative runs $18,000–$42,050 in Seattle, Washington. See the Heat Pump Installation pricing table on this page for the full per-service breakdown.
- Do Seattle installers need an SDCI permit for heat pump replacement?
- Yes. Replacements that alter equipment, refrigerant lines, or electrical service typically require a permit from the Seattle Department of Construction and Inspections (SDCI). Contractors must also be registered and carry the appropriate L&I trade license before pulling permits. Ask the contractor which permits they will file and confirm SDCI plan intake requirements for the specific scope of work.
- When is the busiest season for Seattle heat pump installers?
- Seattle installers are busiest heading into and during the October–April rainy season. Demand rises as homeowners switch to heating and address wet‑season failures. Book site surveys and permit submissions earlier in fall. Scheduling months in advance reduces delays from permit review and limited installer availability.
- How should homeowners prepare an outdoor heat pump before Seattle's October–April rains?
- Clear vegetation and confirm proper condensate routing before the rainy season starts. Ensure outdoor unit pad drainage directs water away from the unit and that weatherproof electrical connections are sealed. Schedule a site survey to document routing, flashing requirements, and any Environmental Critical Areas constraints near Ballard or Capitol Hill.
- How do I find a cold‑climate heat pump specialist in Seattle?
- Look for companies that list cold‑climate model experience, refrigerated‑system commissioning, and defrost‑strategy documentation. Verify installer training with the heat pump manufacturer and check reviews for installs in neighborhoods like Queen Anne and Fremont. Ask for references of completed cold‑climate jobs and a written commissioning checklist.
- Are geothermal heat pump installers commonly available in Seattle?
- Geothermal specialists are available but less common than air‑source installers in Seattle. Homeowners should look for firms with explicit geothermal project experience, drilling subcontractor coordination, and knowledge of local permitting. Confirm the contractor's past Seattle geothermal permits and site examples before requesting a design proposal.
- Do dual‑fuel conversions require a licensed electrician and separate permits in Seattle?
- Yes. Dual‑fuel conversions that modify electrical panels or add automatic switching devices typically require a licensed electrician and may trigger separate electrical permits. Contractors should document the electrical scope in the SDCI application and list the licensed electrician on permit paperwork. Ask to see the electrician's L&I credentials.
- What documents should a Seattle contractor provide before work begins?
- A contractor should provide proof of Washington State trade licensure, active contractor registration, a written scope of work, and the SDCI permit number or permit filing plan. Also request manufacturer spec sheets, a commissioning plan, and evidence of liability insurance. Keep copies of all documents in case of inspection or warranty claims.
- How do Environmental Critical Areas rules affect condensate drainage on urban lots?
- Environmental Critical Areas rules can limit where condensate and drainage tie‑ins go on constrained lots. Installers must route condensate to approved storm or sewer connections and avoid protected buffers. Contractors familiar with Seattle rules will show alternative routing options on the site survey and note any additional permit conditions.