Cost of Air Conditioner Installation in Oregon$4,568.07 for 2-3 ton unit (using existing ductwork) (Range: $3,944.85 - $5,191.29) Free Estimates from Local ProsCost of Whole House Humidifier Installation in Oregon$444.21 for mid-grade central humidifer (flow-through) (Range: $407.75 - $480.67) Free Estimates from Local ProsCost of Central Air Purifier Installation in Oregon$1,238.71 for a typical two story home (standard grade unit) (Range: $1,042.01 - $1,435.40) Free Estimates from Local Pros |