Cost of Air Conditioner Installation in Virginia$4,465.90 for 2-3 ton unit (using existing ductwork) (Range: $3,856.62 - $5,075.18) Free Estimates from Local ProsCost of Whole House Humidifier Installation in Virginia$434.27 for mid-grade central humidifer (flow-through) (Range: $398.62 - $469.92) Free Estimates from Local ProsCost of Central Air Purifier Installation in Virginia$1,211.00 for a typical two story home (standard grade unit) (Range: $1,018.71 - $1,403.29) Free Estimates from Local Pros |