I call Boss Mechanical first as I've used them in my previous home. They respond quicly, analyze the situation and provide a solution for my air conditioning system. Installation was timely during the heat wave and great value for the product. They evenvented a furnace pipe to the outstide which should have been done by the previous owner. Thanks to Carmen and the team. They also provided excellent service to my son who also required an AC unit. Thanks again to all.