Welcome to Assurance Heating & Air Conditioning. Ever since we opened our doors in 1981, the knowledgeable staff at Assurance Heating & Air Conditioning has dedicated itself to providing the whole spectrum of indoor comfort services to the homes and businesses of Cook & Lake County, Illinois. Our technicians are highly competent in their field, each performing their individual specialties with deftness and precision. Thats why you can be sure youll receive top-quality service when you call the HVAC provider whose name says it all.Because assurance is something we know you not only appreciate but also expect from your heating and air conditioning contractor, were happy to inspire the confidence you need to enjoy ongoing peace of mind. No matter what kind of HVAC or other residential or commercial service you need from heating system installation or maintenance to furnace or air conditioning repair you can depend on Assurance Heating & Air Conditioning for quality work every time.