15 Vetted HVAC Companies in Seattle, WA (2026)
Why Seattle's Rainy Winters and Mild Summers Change HVAC Priorities
Seattle's long rainy season (October–April) raises indoor moisture; selecting the best HVAC companies in Seattle, WA helps address ventilation and dehumidification needs. Homes in Capitol Hill and Ballard often favor maintenance and humidity controls during mild summers, while occasional freezing nights still make reliable heating important.
Quick Picks
Awards based on the same publicly available signals as the Vouched Score, including provider-stated certifications and dealer status. Not independently verified.
Which Seattle "HVAC" Pros Stand Out for Response Time and Long Warranties?
| # | Provider | Score | Years | Best for | |
|---|---|---|---|---|---|
| 1 | GGreenwood Heating and Home Services | 89 | 4.9 (4,725+) | 105+ | ★ Highest Vouched Score |
Editorial: Greenwood's mini-split team advertises whole-home ductless installations. The company reports 105+ years serving Seattle homeowners. Greenwood notes emergency service is available for urgent HVAC calls. Seattle's mild, wet winters increase local heat pump demand. Reviewers often mention quick, thorough repair visits. Strengths:
Reviewers praise:
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| 2 | EEvergreen Home Heating and Energy | 88 | 4.8 (1,000+) | 51+ | AC ReplacementSmart Thermostat InstallRebates & Tax Credits |
Editorial: Evergreen Home Heating and Energy is an authorized Mitsubishi dealer for heat pump installs. Strengths:
Reviewers praise:
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| 3 | SSouth West Plumbing, Heating, Air, & Electric | 87 | 5.0 (1,210+) | 44+ | |
Editorial: South West Plumbing, Heating, Air, & Electric states emergency service availability and same-day installs. The company lists financing options through Bill's Comfort Club. South West Plumbing, Heating, Air, & Electric notes heat pump and mini-split services on its site. The company has 40+ years serving Seattle's mixed-weather housing stock. Strengths:
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| 4 | 22 Sons Plumbing, Sewer, Septic, Electric, Heating & Air | 85 | 4.9 (3,910+) | 9+ | Upfront Pricing |
Editorial: 2 Sons advertises 24/7 emergency response for heating and air calls. Strengths:
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| 5 | BBrennan Heating, Air Conditioning, & Electric | 85 | 4.5 (2,240+) | 39+ | Ductwork & SealingFree Estimates |
Editorial: Brennan leads with specialty HVAC installations and whole-home comfort upgrades. The company lists Lennox Premier and Carrier Premier dealer status. Brennan ties services to Seattle's damp, cool climate and frequent heat-pump use. Reviews cite technicians explaining repairs and performing thorough diagnostics. Aeroseal duct-sealing capability appears on their service pages. Strengths:
Reviewers praise:
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| 6 | BBeacon Plumbing, Heating, Electrical & Mechanical Inc - Seattle | 83 | 4.5 (3,350+) | 27+ | |
Editorial: AC repair specialization appears prominently across their service pages and testimonials. Beacon reports 25+ years serving Seattle and the Puget Sound. The company advertises 24/7 emergency response with typical Seattle arrival windows. Review excerpts note technicians arriving within about 90 minutes for urgent calls. Strengths:
Reviewers praise:
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| 7 | GGlendale Heating & Air Conditioning | 83 | 4.8 (705+) | 88+ | |
Editorial: Mini-split specialist with detailed ductless system pages and project descriptions. Lennox Premier Dealer status appears across their equipment pages. Family-owned since 1938, serving Puget Sound neighborhoods for 85+ years. Glendale notes same-week scheduling and kept daily slots for no-heat emergencies in Seattle's mild climate. Strengths:
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| 8 | FFuse Service | 81 | 4.9 (270+) | ||
Editorial: Fuse Service focuses on fast residential and commercial AC repair across the Seattle metro. Fuse Service states same-day and 24/7 emergency response across King County. Fuse Service lists Wisetack financing for installations. Fuse Service advertises flat-rate pricing and free replacement estimates. Seattle's damp climate increases heat pump demand; Fuse Service highlights heat pump and mini-split installs. Strengths:
Reviewers praise:
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| 9 | PProgressive Comfort Solutions | 77 | 4.9 (155+) | 16+ | |
Editorial: Progressive Comfort Solutions leads with Mitsubishi heat pump installations and whole-home systems. Progressive Comfort Solutions reports Mitsubishi Diamond Preferred Contractor status and factory training. Progressive Comfort Solutions advertises same-day service for urgent heat pump issues. Progressive Comfort Solutions helps customers access Seattle's Clean Heat rebates and local incentives. Progressive Comfort Solutions lists free estimates and in-house crews for consistent scheduling. Strengths:
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| 10 | GGo Green Heating AC & Electric | 74 | 4.8 (225+) | 10+ | |
Editorial: Go Green focuses on AC repair with same-day response, per their site. The company lists licensing since 2016, showing 10+ years local experience. Their site lists Financing Available for larger installations. Seattle's mild, damp climate makes heat-pump expertise important; Go Green publishes heat pump content. Strengths:
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| 11 | SSeattle Heating & Cooling | 74 | 4.8 (80+) | ||
Editorial: Seattle Heating & Cooling advertises mini-split installations using Mitsubishi and LG systems. Strengths:
Reviewers praise:
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| 12 | NNortech Heating, Cooling & Refrigeration | 67 | 4.5 (150+) | Furnace Repair | |
Editorial: Furnace repair focus with NATE-certified technicians listed on the website. Strengths:
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| 13 | OOne Hour Heating & Air Conditioning | 66 | 5.0 (30+) | ||
Editorial: One Hour Heating & Air Conditioning shows frequent reviewer accounts of fast, same-day AC diagnostics. The site lists financing options to help spread replacement costs. The company advertises a two-year materials and labor warranty on work. Central Seattle's damp climate raises heating and indoor-air concerns One Hour notes with air-quality services. Reviews emphasize punctuality and clear technician explanations. Strengths:
Reviewers praise:
When to choose them
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| 14 | BBlue Ridge Heating and Air Conditioning | 62 | 5.0 (35+) | ||
Editorial: Blue Ridge focuses on air conditioning repair work with routine Seattle service calls. Blue Ridge lists certified professionals on its website. Blue Ridge notes free estimates are available for local projects. Blue Ridge shows 38 Google reviews, indicating steady local demand. Strengths:
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| 15 | SSeattle Heating & Air Conditioning | 52 | 4.5 (15+) | ||
Editorial: Seattle Heating & Air Conditioning lists HVAC service centered in Seattle's Capitol Hill neighborhood. The business uses a local storefront at 1314 E Union Street for dispatch. Google Maps shows sixteen customer reviews for the company. The listing appears in Seattle search results at position 15 locally. Reviewers flag:
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Typical HVAC 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 |
|---|---|
| AC repair (typical service call) | $180–$780 |
| Furnace repair | $180–$1,100 |
| Tune-up / annual maintenance visit | $110–$240 |
| Full AC system replacement (3-ton, installed) | $6,600–$15,600 |
| Furnace replacement (installed) | $3,600–$10,200 |
| Heat pump installation | $6,000–$17,400 |
| Mini-split (single-zone, installed) | $3,000–$7,800 |
| Duct cleaning (whole-home) | $420–$960 |
| Duct sealing (Aeroseal or similar) | $1,800–$4,200 |
| Whole-house humidifier (installed) | $480–$3,000 |
| Whole-house dehumidifier (installed) | $1,800–$4,200 |
| Emergency / after-hours service premium | $180–$600 |
See how Seattle compares to 90+ US cities: HVAC Cost Index →
Nearby Washington hvac pricing: Auburn · Bellevue · Bellingham
See broader context: HVAC pricing in Washington · HVAC pricing nationwide
How were Seattle's "HVAC" providers evaluated — which signals mattered most?
This guide evaluated 15 Seattle HVAC providers using Google Maps review metrics, service scope, emergency availability, warranties, manufacturer-dealer status, and pricing model signals. Emphasis fell on Google Maps review counts and explicit provider notes about flat-rate pricing, free estimates, and dealer certifications.
- Google Maps review metrics drove ranking weight. Greenwood, 2 Sons, and South West show the largest review volumes, per Google Maps data.
- Brennan and Glendale list Lennox dealer status. Progressive and Evergreen report Mitsubishi dealer affiliations on their sites.
- Several providers state emergency response windows differently. Greenwood, 2 Sons, Beacon, and Fuse state 24/7 availability.
- Flat-rate pricing appears in provider notes. 2 Sons, Beacon, and Fuse list flat-rate pricing in their profiles.
- Nortech lists NATE certification. That credential was recorded from provider-supplied data and registry references.
These signals were combined with average rating and review volume for transparency and comparability, using Google Maps data and registry or provider-declared credentials where available per BBB records.
How do I choose a HVAC Company in Seattle?
- Verify a provider's Google rating and review count.
- Compare dealer certifications and manufacturer affiliations.
- Confirm emergency response terms and any advertised warranties.
- Request written pricing and check for flat-rate or itemized estimates.
- Check licensing and complaints per state records and BBB.
4 HVAC Problems Seattle Homes See from Damp Winters to Occasional Freezing Days
The most common HVAC problems in Seattle stem from long, rainy winters that raise indoor moisture and from occasional freezing days that stress systems. When seeking affordable hvac services seattle wa, expect persistent condensation, clogged drains, corrosion-related failures, and heat-pump performance loss tied to local weather.
- Condensation and mold inside ducts. Seattle's October–April rainy season raises indoor humidity and drives condensation inside ductwork, which promotes mold growth and reduces airflow.
- Clogged condensate drains. Continuous dehumidification during damp winters leads to algae and debris buildup in condensate lines, causing water backups and secondary water damage.
- Corrosion of outdoor units. Persistent coastal moisture and winter rain accelerate rust on coils, fasteners, and electrical contacts, shortening component life in Seattle homes.
- Reduced heat-pump efficiency. Mild summers with cool, damp conditions reduce air‑source heat pump dehumidification efficiency, making systems run longer and increase wear.
- Freeze-related valve and sensor failures. Rare freezing days in Seattle can cause refrigerant valves, condensate traps, and sensors to stick or crack, triggering system faults and emergency calls.
Why Seattle neighborhoods from Capitol Hill to Ballard Need Different "HVAC" Approaches
Seattle's long October–April rainy season drives moisture problems and mild temperature swings, which shape equipment and service demand. Local hvac reviews Seattle, Washington show readers prioritize dehumidification, corrosion protection, and heat-pump optimization for damp homes across Capitol Hill, Ballard, and Queen Anne.
How local conditions affect HVAC choices
Seattle's rainy winters raise indoor humidity and raise mold and corrosion risk in older housing stock.
This increased moisture accelerates coil and control corrosion on outdoor units. Evaluated providers list corrosion-resistant coatings and more frequent coil maintenance among common capabilities.
- Condition — persistently high indoor humidity. Impact: more condensation in ducts and higher mold risk. Capability: many evaluated providers offer air filtration upgrades, whole‑home dehumidifiers, and UV‑light IAQ installs to reduce moisture and spores.
- Condition — mild summers with frequent cool days. Impact: heat pumps run longer for dehumidification and comfort. Capability: several providers specialize in high‑efficiency heat pumps and smart thermostats to optimize run cycles and energy use.
- Condition — scattered freezing days and older roofs. Impact: frozen condensate traps and stuck valves cause service calls. Capability: evaluated companies advertise emergency service availability and preventive winter tune‑ups to protect condensate drains and sensors.
- Condition — varied housing types across neighborhoods. Impact: ducted multi‑story homes and tight craftsman houses need different zoning. Capability: look for providers experienced with zoning systems and ductless options for tight spaces in Capitol Hill and Queen Anne.
Regulatory and permitting factors also shape work scope. Washington State HVAC/R licensing and EPA Section 608 rules require certified technicians for refrigerant work. Evaluated providers commonly list NATE credentials, Lennox dealer status, and EPA certification when describing their capabilities.
What Seattle homeowners actually ask about "HVAC" repairs, replacements, and emergency calls
- How do I get a quote from these HVAC companies?
- Submit one request on this page and we send it to the vetted HVAC pros in Seattle, WA listed here. They send quotes back — no obligation.
- How much does HVAC service cost in Seattle, WA?
- Furnace repair typically runs $180–$1,100, and duct cleaning runs $420–$960 in Seattle, Washington. See the HVAC pricing table on this page for the full per-service breakdown.
- Do Seattle HVAC contractors need a Washington State HVAC/R Specialty Contractor License (06A) to replace heat pumps?
- Yes. Seattle installations that involve refrigerant or regulated HVAC work require a Washington State HVAC/R Specialty Contractor License (06A). Contractors must also register with the state and hold EPA Section 608 certification for refrigerant handling. For permited installs, expect the contractor to reference Seattle Department of Construction and Inspections (SDCI) permit numbers and to confirm Energy Code compliance before work begins.
- Does Seattle require SDCI permits for installing a heat pump or mini‑split in Capitol Hill or Ballard?
- Yes. Most heat pump and mini‑split installations in Seattle need an SDCI mechanical permit. Permits ensure Washington State Energy Code compliance and inspection of refrigerant and electrical connections. Multi‑unit buildings or work in environmental critical areas may require additional SDCI reviews, so ask the contractor which permits they will pull before scheduling the job.
- When should Seattle homeowners call for emergency HVAC service during a rare freeze?
- Call immediately if condensate pipes or outdoor units freeze and system operation stops, or if a gas furnace shows combustion symptoms. Freezing events, though uncommon, can cause condensate backups and valve failures that risk equipment damage. Ask a provider about emergency service availability and temporary measures to protect condensate lines until a technician arrives.
- How should Seattle homes on Queen Anne manage moisture and indoor air quality after a long rainy season?
- Start with a direct assessment combining humidity measurements and visual inspection for mold or condensation. Many Seattle providers recommend whole‑home dehumidifiers, upgraded filtration, and targeted duct cleaning when persistent moisture appears. Request a written IAQ plan listing target indoor RH, maintenance intervals, and any warranties tied to dehumidifier or UV installations.
- What evidence should homeowners ask for to verify EPA Section 608 and other technician certifications?
- Ask for technician EPA Section 608 certification and the contractor's Washington State registration number. Reasonable providers list these credentials on estimates or employee profiles. For larger installs, request NATE or manufacturer training documentation. Keep copies of certifications with the permit paperwork for future resale or warranty claims.
- How do Seattle neighborhoods like Capitol Hill and Ballard affect system sizing and ventilation choices?
- Neighborhood housing stock influences sizing and ventilation needs. Older homes in Capitol Hill often need duct assessments and possible sealing, while Ballard craftsman homes may suit ductless or zoned heat‑pump systems. Evaluate insulation, roof orientation, and typical occupancy when comparing contractor proposals. Prefer written load calculations that reference Seattle weather and indoor humidity goals.
- Does Seattle enforce Washington State Energy Code requirements for furnace and heat pump replacements?
- Yes. Replacements must meet the Washington State Energy Code and local Seattle requirements. Contractors should show how proposed equipment complies, including efficiency ratings and any required controls. For new construction or substantial replacements, expect prescriptive measures such as heat pump water heater considerations for code compliance.
- How do homeowners spot a contractor experienced with mini‑splits and ductless heat pumps in Seattle?
- Look for contractors who provide detailed load calculations, manufacturer dealer or installer training affiliations, and a portfolio of recent Seattle installations. Review recent customer feedback mentioning mini‑split work in neighborhoods like Queen Anne or Ballard. Ask for examples of condensate and drainage solutions used in Seattle's rainy climate to prevent freeze or moisture issues.