Basic
$4,866 – $10,706 per project
Single-stage condenser at the regional minimum efficiency with matched indoor coil, new pad, disconnect, existing line set flushed

Replace or install a central split AC system (outdoor condenser plus indoor coil, about 2-5 tons) on existing ductwork, equipment and labor.
Central Air Conditioning in Seattle, Washington typically costs $5,725 to $12,595 per project as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Seattle are 19.0% higher than the national average for central air conditioning.
National average: $5,000 – $11,000 per project
$4,866 – $10,706 per project
Single-stage condenser at the regional minimum efficiency with matched indoor coil, new pad, disconnect, existing line set flushed
$5,725 – $12,595 per project
Higher-efficiency condenser around 15 to 16 SEER2 with matched coil, new pad, disconnect and line set flush
$7,156 – $15,744 per project
Two-stage condenser around 17 to 18 SEER2 with matched coil, new line set, compatible thermostat
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $2,340 – $5,148 | job |
| Labor | labor | $2,345 – $5,159 | job |
| Supplies & Other | supplies | $624 – $1,373 | job |
| Equipment & Disposal | equipment | $416 – $915 | job |
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
BuildX Pro researches and reviews the national price range for Central Air Conditioning, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 2026.
Connect with local central air conditioning contractors in Seattle for personalized quotes based on your specific project.