AC Installation Cost in Seattle, WA (2026)
Cost breakdown
| Item | Low | High |
|---|---|---|
| AC condenser unit | $2,650 | $4,400 |
| Evaporator coil | $900 | $1,450 |
| Labor & installation | $1,750 | $2,950 |
| Line set & materials | $600 | $1,000 |
Cost by AC size
| AC size | Low | High |
|---|---|---|
| 2 ton (~1,200 sq ft) | $4,500 | $7,650 |
| 3 ton (~1,800 sq ft) | $5,650 | $8,850 |
| 4 ton (~2,400 sq ft) | $6,850 | $9,800 |
| 5 ton (~3,000 sq ft) | $7,650 | $11,200 |
Top-rated HVAC pros in Seattle
Vetted local companies serving Seattle, WA. Compare free quotes — no obligation.
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1
Better Air NW
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2
GREENTOP Heating
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3
Green Bear Heating And Air
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4
Goat Heating & Cooling
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5
Ben's Plumbing Heating & Air
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6
Go-Green Heating AC & Electric
Local companies compiled from public sources. Details shown for reference — always verify licensing before hiring.
Estimate your AC Installation cost
A AC Installation in Seattle, WA typically costs between $5,900 and $9,800, with most homeowners paying around $7,550. Costs in Seattle run above the national average, driven by local labor rates and permit fees.
Below is a full cost breakdown, a price comparison by ac size, the factors that move the price in Seattle, money-saving tips, and how to hire the right pro. Prices are based on 2025–2026 industry data and updated regularly.
AC Installation in Seattle: local factors that affect your cost
Seattle’s mild, very wet climate means constant moisture and little historical need for air conditioning. Homes traditionally lacked AC, but recent heat waves have driven a boom in heat pumps and cooling retrofits — electrification incentives apply.
A city permit and Washington’s energy code apply to most work. For the best pricing, book roofing for the dry summer window (demand peaks then). A local HVAC contractor who knows Seattle’s conditions and codes will give you the most accurate quote — request a few below to compare.
What's included in the cost
- A new outdoor condensing unit and evaporator coil
- Refrigerant charge and line set
- Electrical connection and disposal of the old unit
- Permit and startup testing
What affects the price
- Cooling capacity (tons) for your square footage
- SEER2 efficiency rating
- Whether existing ductwork can be reused
- Local permit and inspection fees
How to save on AC Installation in Seattle
- Install in the off-season (fall/winter) for better rates
- Right-size the unit with a load calculation
- Reuse good ductwork to cut cost
- Look for manufacturer and utility rebates
Get free quotes for AC Installation
Tell us about the job — local, vetted pros will reach out with real prices. No obligation.
How to hire the right pro
- Verify licensing and insurance
- Insist on a load calculation for sizing
- Get the SEER2 rating and warranty in writing
- Compare 3 itemized quotes
Frequently asked questions
How much does a AC Installation cost in Seattle?
In Seattle, WA, a AC Installation typically costs $5,900 to $9,800 (average about $7,550). Your exact price depends on the specifics below.
Do I need a permit for a AC Installation in Seattle?
A city permit and Washington's energy code apply to most work. A licensed local contractor should pull the permit and handle inspections as part of the job.
Cost figures are based on 2025–2026 industry data (HomeGuide, Angi) and adjusted for local labor rates. Actual prices vary by project — get free local quotes for an exact figure.