We make sure your will be a lifetime customer by guaranteeing your complete satisfaction on all of our work. To create the best experience for you, our technicians go through vigorous background checks and regular training and we use only state-of-the-art technology to diagnose and repair all makes and models of heating and cooling systems. How do you know a company cares about the quality of their work? They stand behind it. We know Air Quality Dunrite's people and products are the best in the business and we stand behind them with warranties and guarantees that can't be matched by anyone else in the industry. Licenses, Insurance and Affiliations How do you know if you can trust a heating and cooling company.. One of the most important things to check is to make sure the company you are considering has the appropriate licenses and insurance to operate in your area. Air Quality Dunrite possesses both.