Contractors - Heating & Air Conditioning Contractors - Heating & Air Conditioning Search | Advanced Search | New Members | Coupons and Discounts | All Categories Sort alphabetically by... Name City Gartner Refrigeration Co. _ 2331 West Superior StreetDuluth, MN 55806 Jay Koning (218) 722-4439 (218) 740-1121 Learn More | Visit Site | View on Google Maps A.W. Kuettel & Sons, Inc. _ 3930 Airpark Blvd.Duluth, MN 55811 Adam Kuettel (218) 722-3901 Learn More | Visit Site | View on Google Maps Uhl Company, Inc. _ 4444 Airpark Blvd.Duluth, MN 55811 (218) 727-1767 Learn More | Visit Site Duluth Energy Systems _ One Lake Place DriveDuluth, MN 55802 Terry Nanti (218) 723-3601 Learn More | Visit Site | View on Google Maps Johnson Controls, Inc. _ 4627 Airpark BlvdDuluth, MN 55811 (218) 727-8996 Learn More | Visit Site Sheet Metal Solutions _ 2231 W. Superior StreetDuluth, MN 55806 (218) 721-4424 Learn More | Visit Site | View on Google Maps If your business isn't here, contact us today to get listed!