This was hands down the best experience I have ever had with comfort first. The gentleman was very knowledgeable and was prepared to answer all my questions. this was the third visit I'd had since trying to get my unit fixed, and this gentleman did what neither of the other two did. He completed an in-depth examination and came up with the problem that I had originally that the other two did not find. I was very happy with him and felt very relieved and in good hands.