Click on the websites below to find out more information on each company's products.
http://www.heil-hvac.com/en/us/
http://www.colemanac.com/
http://www.goodmanmfg.com/
http://www.rheem.com/Products/Heating_and_Cooling/
http://www.heatnglo.com/
http://www.majesticproducts.com/