Furnace/HVAC Replacement Cost in Seattle (2026)
Average cost in Seattle
US$5,555 — US$20,775
US$15 — US$18 per sq ft
Cost Breakdown
ItemizedFurnace and AC/Heat Pump hardware
45%
Installation and technician fees
45%
Ductwork adjustments, refrigerant lines
5%
Old unit haul-away and recycling
3%
City of Seattle mechanical permits
2%
Sales Tax at 6.5%
📋What's Included
ScopeTypically Includes
- Furnace or AC unit
- Thermostat
- Basic ductwork connections
- Refrigerant
- Labor & installation
- Old unit disposal
Typically Excludes
- Full ductwork replacement
- Zoning systems
- Smart home integration
- Permits & inspections
- Humidifier or air purifier
Based on a standard 2,000 sq ft home with existing ductwork.
🧮Estimate Your Cost
InteractiveEstimated Cost
US$6,340 — US$9,510
Based on 8 sources and market data for Seattle. Actual costs may vary depending on specific project requirements.
🏢Top HVAC Replace Contractors in Seattle
Verified providersHotWire Furnace, Air Conditioning & Appliance Repair Seattle
10202 5th Ave NE Suite 200, Seattle, WA 98125, USA
213 reviews
Greenwood Heating and Home Services
14027 Interurban Ave S, Seattle, WA 98168, USA
4,423 reviews
AAA Heating & Air Conditioning
4150 Lind Ave SW, Renton, WA 98057, USA
4,663 reviews
Provider data sourced from public business directories. Ratings and reviews are public and may change. LookupCost is not affiliated with listed providers.
💬What People Actually Paid
Community❓Common Questions
Permits for a standard split system in Seattle average $96, while standalone furnace permits are approximately $57. Major projects requiring multiple inspections can see permit fees reach up to $300.
Labor accounts for 40% to 60% of the total project cost in Seattle. Local hourly rates for skilled HVAC technicians range from $80 to $150, which is roughly 43% higher than the national average due to the city's high cost of living.
A standalone furnace replacement averages $4,683, whereas full heat pump systems, which are increasingly popular in the Pacific Northwest for their efficiency, typically range from $12,000 to $20,000.
Yes, the transition to A2L refrigerants and new DOE efficiency standards (targeting 95% AFUE for gas furnaces) are expected to drive equipment costs up by 10% to 15% throughout 2026.
📊Our Methodology
How we collect dataAggregated from 8+ verified web sources and cost databases
Licensed contractor estimates and regional cost guides
Government construction and labor statistics
Community-reported project costs and reviews
Last data collection: today. Updates run weekly. All costs in USD.