Justus Heating & Cooling is an air conditioning, heating & furnace service & installation contractor service the Granite City, IL area.We service all makes & models but are an authorized Comfortmaker air conditioning & heating dealer.We service & sell:Central AirElectronic Air CleanersFurnacesHeat PumpsBoilersHumidifiersCustom Sheet Metal WorkCommercial CoolersCommercial FreezersCommercial Duct CleaningIndoor Air QualityContact Doug Justus to get fast, professional and guaranteed service or installation of your system.