Duffy Ducts, 325 N Adams St, Carthage, IL 62321, US

Peters Heating and Air Conditioning, founded in 1955 and located in Quincy, Ill., is a family owned and operated company that offers a variety of products in all makes and models, including geothermal heating and cooling systems, architectural metal roofing systems and water heaters and fireplaces. It also manufactures gas grills and water heaters. The company s employees use advanced technology during craftsmanship, design, and service. The company additionally has met the standards and passed all the special training to become a Carrier factory-authorized dealer. The company also has locations in Pittsfield and Hamilton, Ill., and Hannibal, Kirksville, Troy and Columbia, Mo. All the locations offer services 24 hours, seven days a week on various makes and models of heating and cooling systems.