Basic
$9,733 – $19,465 per project
Single-stage outdoor unit near 14 SEER2 with matched high-velocity air handler, insulated small-duct runs, standard round outlets
Retrofit a whole-home high-velocity small-duct central air system (Unico/SpacePak type: air handler, outdoor unit, plenum, small ducts, outlets) in an existing home.
High Velocity Air Conditioning in Seattle, Washington typically costs $11,450 to $22,900 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 high velocity air conditioning.
National average: $10,000 – $20,000 per project
$9,733 – $19,465 per project
Single-stage outdoor unit near 14 SEER2 with matched high-velocity air handler, insulated small-duct runs, standard round outlets
$11,450 – $22,900 per project
Two-stage outdoor unit near 15-16 SEER2, matched air handler with ECM blower, sound-dampening tubes at outlets, programmable thermostat
$14,313 – $28,625 per project
Variable-speed inverter outdoor unit and variable-speed air handler, sound-dampening tube at every outlet, zoned smart thermostat
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $4,680 – $9,360 | job |
| Labor | labor | $4,690 – $9,380 | job |
| Supplies & Other | supplies | $1,248 – $2,496 | job |
| Equipment & Disposal | equipment | $832 – $1,664 | job |
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local high velocity air conditioning contractors in Seattle for personalized quotes based on your specific project.