Furnace/HVAC Replacement Cost in Seattle (2026)
Average cost in Seattle
US$6,500 — US$24,500
US$5 — US$12 per sq ft
Cost Breakdown
ItemizedFurnace/AC/Heat Pump unit
45%
Licensed HVAC installation
35%
Modifications and supplies
12%
Seattle SDCI fees
8%
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 12 sources and market data for Seattle. Actual costs may vary depending on specific project requirements.
📈Price Momentum
Year-over-year~1 year ago
US$10,875
Today
US$11,582
Furnace/HVAC Replacement in Seattle is ↑ 6.5% compared to roughly a year ago — about US$707 more on the average project.
Comparison derived from the year-over-year change rate, not a month-by-month price index. We don't store historical snapshots yet — when we do, this will become a real time series.
🏢Top HVAC Replace Contractors in Seattle
Verified providersHotWire Furnace, Air Conditioning & Appliance Repair Seattle
10202 5th Ave NE Ste 200, Seattle, WA 98125, USA
238 reviews
Pure Air Cooling & Heating
9720 NE 120th Pl, Kirkland, WA 98034, USA
373 reviews
Greenwood Heating and Home Services
14027 Interurban Ave S, Seattle, WA 98168, USA
4,669 reviews
Essential Heating and Air
1520 14th St NW Unit A, Auburn, WA 98001, USA
1,669 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
Seattle costs are approximately 20% higher due to a 1.28x regional labor multiplier and strict energy codes. Additionally, the 2026 SDCI permit fees saw an 18% increase, with base hourly rates for plan reviews reaching $292.
A combined gas furnace and central AC replacement typically ranges from $8,000 to $15,500. High-efficiency heat pump conversions, which are increasingly popular in Seattle, can reach up to $26,400 for premium multi-zone systems.
Yes, while the federal 25C tax credit expired in early 2026, local utilities like Seattle City Light and Puget Sound Energy offer rebates specifically for heat pump installations, which can offset costs by $1,000 to $2,000.
For a standalone furnace replacement, Seattle homeowners spend an average of $4,683, with most professional installations falling between $4,000 and $8,000 depending on the AFUE efficiency rating.
📊Our Methodology
How we collect dataAggregated from 5+ 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: 2 weeks ago. Updates run weekly. All costs in USD.
About this data
Cost figures are estimates synthesized from public market data using AI research and refreshed regularly. Real project costs vary by scope, materials, contractor, and site conditions. Always get verified quotes from licensed contractors for your specific project.
Spotted bad data? Let us know — we'll review and update.