Not very impressed with these guys. They were dispatched by my warranty company to look at a very loud knocking noise from my AC unit. Of course it was "normal" - just like when you take your car to the dealer for an odd noise. Anyway, the guy wants to check out my returns and opens the area where my filter is at. He claims it's in absolutely horrible shape and needs to be re-outfitted with some new insulation. Okay, no problem. I told them to call me next week so we could schedule the appointment. I made it very clear I wanted it done next week. I think the guy was too busy bragging about all of his certification badges that he forgot to write down my request. Oddly, 5 minutes after he leaves he comes back saying "ya know what, your situation is so bad I want to take some pictures to show in a training seminar." I let him take the pics and at this point i'm thinking wow, this needs to get done asap. So the following week I call them and the women on the phone was confused as to what my request was for since apparently they are not used to getting calls outside of warranty of work. She claims they'll call me back that same day. Two days later I follow up and she claims we never spoke previously but they would call me right back. Never heard back from them. His estimate was $500 and I was able to have it fixed for $90 by another company.