HVAC Technician prices in Seattle, WA
| Project | Time | Typical cost | Range |
|---|
| Diagnostic service call (no parts) |
45–90 min |
$84 |
$69 – $101 |
| Annual AC or furnace tune-up |
60–90 min |
$156 |
$128 – $187 |
| AC repair (capacitor / contactor / minor part) |
1–3 hours |
$378 |
$310 – $453 |
| Refrigerant recharge (R-410A, residential) |
1–2 hours |
$451 |
$370 – $542 |
| Smart thermostat install |
1 hour |
$335 |
$275 – $402 |
| Gas furnace replacement (80% AFUE, 80k BTU) |
1 day |
$3,459 |
$2,836 – $4,151 |
| Heat pump replacement (3-ton, 16 SEER) |
1–2 days |
$7,909 |
$6,485 – $9,491 |
| Mini-split install (single zone, 12k BTU) |
1 day |
$2,879 |
$2,361 – $3,455 |
| Whole-home duct cleaning |
3–5 hours |
$407 |
$334 – $488 |
Local rate = BLS national mean × 2.4 markup × (WA COL 116.0/100). Materials adjusted by the same factor.
What a hvac technician in Seattle actually does
A residential HVAC technician services, repairs, and installs forced-air furnaces, central AC, heat pumps, mini-splits, and ductwork. A diagnostic visit typically includes static-pressure measurement, refrigerant pressure (for cooling systems), temperature differential between supply and return, electrical-component testing (capacitor microfarad, contactor pull-in, transformer voltage), and ignition or burner inspection on heating equipment. Installations require Manual J / Manual D / Manual S calculations to size the equipment correctly — beware any installer who skips these and recommends "the same size you have now."
Questions to ask before you hire in WA
- Are you NATE-certified, and is your company licensed and insured in this state?
- For a replacement: did you run a Manual J load calculation, and can I see it in writing?
- What SEER2/HSPF2 is the equipment you're quoting, and what's the AHRI match number?
- Does the quote include duct sealing, thermostat, condensate pump (if needed), and permit?
- What's the labor warranty, and is the manufacturer warranty registered in my name?
- Will you provide commissioning data (subcooling/superheat, static pressure) at completion?
"Same-size replacement" without a load calc, refrigerant-only quotes that don't address the leak, and any installer who pushes the largest unit without explaining why.
5 licensed hvac technicians in Seattle
Coast Products OSM verified
📍 954 Elliott Avenue West, Seattle, WA 98174
★ 4.5 / 5 · 117 reviews · 37 years in business
✓ Licensed ✓ Insured 24/7 Emergency 37 yrs
Specialties: Furnace install, AC repair, Refrigerant recharge
Greenwood Heating & Air Conditioning OSM verified
📍 825 South Stacy Street, Seattle, WA 98164
★ 3.6 / 5 · 134 reviews · 9 years in business
✓ Licensed ✓ Insured BBB A- 24/7 Emergency 9 yrs
Specialties: AC repair, Mini-split install, Heat pump replacement, Refrigerant recharge
Seattle Heating & Cooling OSM verified
📍 6029 Roosevelt Way Northeast, Seattle, WA 98164
★ 4.3 / 5 · 177 reviews · 13 years in business
✓ Licensed ✓ Insured BBB A+ 24/7 Emergency 13 yrs
Specialties: Boiler service, Furnace install, AC repair, Thermostat install, Refrigerant recharge
ACI Mechanical & HVAC Sales OSM verified
📍 6194 Aspen Rd, Seattle, WA 98174
★ 5.0 / 5 · 357 reviews · 11 years in business
✓ Licensed ✓ Insured BBB A 11 yrs
Specialties: Boiler service, Thermostat install, Duct cleaning, Air-quality test, Heat pump replacement
Local Heating & Cooling
📍 2146 Aspen Dr, Seattle, WA 98154
★ 4.3 / 5 · 65 reviews · 36 years in business
✓ Licensed ✓ Insured BBB A+ 24/7 Emergency 36 yrs
Specialties: Annual tune-up, Air-quality test, Duct cleaning, Thermostat install
Looking for a specific ZIP?
Seasonal hvac checklist for Seattle homeowners
Spring
- Schedule an AC tune-up before May; pros are 30–40% cheaper in shoulder season than during the first July heatwave.
- Replace HVAC filters (every 30–90 days depending on type and pets).
- Hose down the outdoor condenser coil and clear at least 2 feet of vegetation around it.
- Test the AC by setting it to 5°F below indoor temperature; it should kick on within 30 seconds and the supply registers should blow noticeably cool air within 5 minutes.
Fall
- Schedule a furnace or heat-pump tune-up before October.
- Replace HVAC filters again going into heating season.
- Clear leaves from around the outdoor condenser/heat pump and cover the top only (never wrap the sides).
- Test CO detectors near gas-burning appliances; replace batteries.
- Run the furnace for 10 minutes before the first cold snap; address any odd smells, banging, or short-cycling now.
Winter
- Keep furniture and rugs at least 6 inches off supply registers and return-air grilles.
- Inspect attic insulation; less than R-30 is the #1 reason heating bills run high in older homes.
- Defrost outdoor heat-pump coils once every 2–3 weeks during sustained cold.