McMaster Air & Heat was recommended to me by an acquaintance. They came out for a free estimate on the same day I called. I also received a quote through Home Depot. I selected McMaster based on price and the positive attitude compared to the other vendor. Once I gave the ok, they were out the next day. The complete 3-TON system (furnace and A/C condenser) was installed in less than 2 days. The HERS inspection passed without a problem. I was amazed at McMaster's promptness and professionalism. I would highly recommend McMaster to anyone.