The technican came out and was very friendly and knowledgeable. He didn't try to sell me on something unnecessary. I asked him a bunch of questions about possibly buying a high efficiency expensive air conditioner and he talked to me about how it wouldn't really end up being cost effective for our type of house. The air conditioner installation went perfectly. He was very patient about everything and very good at explaining things. I thought Air Pro Master were great and would use them again.