Four Suns Heating & Cooling, Inc. serves the Fox Valley area in Illinois, where it provides installations and repairs of air conditioning systems, furnaces, and water heaters. It also takes on work involving sump pumps, humidifiers, filtration systems, ultraviolet light systems, sheet metal fabrication, and custom duct work. The firm serves both commercial and residential clients, to whom it offers free estimates. It is a family owned and operated company with two decades of industry experience, and all of its technicians are background checked, drug tested, and professionally certified. Four Suns' service area spans West Chicago, Aurora, Naperville, Bolingbrook, Carol Stream, St. Charles, and Montgomery, as well as other nearby towns. The company offers online coupons and promotions to ensure that its customers get the best possible value for money.