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 |
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.
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
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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.
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.