A 4-ton, 13-seer Goodman air conditioner is available at multiple retailers, including Amazon.com, Acwholesalers.com and Alpine Home Air Products. Each retailer offers different air conditioner models at various prices.
Acwholesalers.com offers a three-in-one air conditioner system that includes an air condenser, air conditioner and gas furnace heater. Alpine has the same model for sale as Acwholesalers.com, but also sells the condenser on its own. Amazon.com sells a Goodman model similar to the one on the other sites, with an energy efficient compressor and a filter dryer. All Goodman models use a chlorine-free refrigerant to reduce negative effects on the environment.