Cost of Air Conditioner Installation in Pennsylvania$5,450.00 for 2-3 ton unit (new ductwork installed) (Range: $4,800.00 - $6,100.00) $4,125.27 for 2-3 ton unit (using existing ductwork) (Range: $3,594.08 - $4,656.46) $6,500.00 for 5 ton unit (new ductwork installed) (Range: $5,800.00 - $7,200.00) $5,950.00 for 5 ton unit (using existing ductwork) (Range: $5,000.00 - $6,900.00) Free Estimates from Local ProsCost of Whole House Humidifier Installation in Pennsylvania$400.88 for mid-grade central humidifer (flow-through) (Range: $367.97 - $433.79) Free Estimates from Local ProsCost of Central Air Purifier Installation in Pennsylvania$1,117.89 for a typical two story home (standard grade unit) (Range: $940.38 - $1,295.39) Free Estimates from Local Pros |