I've used Keefe's for over 10myears. They are prompt, courteous & stand behind their work. When I had to replace my heating & air conditioning units they gave me a variety of choices. I went with the Lennox units & felt that I got a fair price. There was a problem with a component. They replaced it under the transferable lifetime warranty. Another issue recently came to light with the refrigerant line. It was on the ground & the insulation was worn. They corected it at no additional charge. I wish all contractors were as good as Keefe's. I was surprised to see a lot of negative ratings on this site. My experience has been the exact opposite.