Quail Services did some service on my air exchange which is in my attic. They're very good at keeping everything clean and they're just very helpful. They got the job done quickly and they were in and out. I had used their service once before and that was a good experience as well, that's why I called them back. I thought the pricing was pretty fair. You will get excellent service with them. I had no problems and it was next day service, which was great.