This was the second time I used Mast Air! First time I had a home warranty. This time I didn't. My A/C stopped working on a week night! They came out on Friday and diagnosed the problem saying my motor on the air handler went out ( burned up). Was a simple job but to me was over priced but when you have no A/ C your stuck. They charged me $ 836.00. Thought it was hi but nothing I could do about it. But they are a professional company! High prices but OK work.