Same-day furnace and AC repairs and installation in Waterloo with 24/7 support.The Constant Home Comfort Group is a leading home energy-efficiency improvement company operating in Waterloo.Our expert service technicians are more than highly qualified and even more knowledgeable to provide you with the most appropriate solutions for all your cooling and heating as well as duct cleaning, window and door replacement and insulation needs in Waterloo.Constant Home Comfort is a Lennox Centurian Award winner in recognition of outstanding dealer performance. The award is given to approximately 2% of the top-performing Lennox dealers in North America.