Summit Heating & Air Conditioning is responsive, professional, and pleasant to work with. I love that a customer service representative answers the phone every time I call and that they give you a courtesy call right before the visit. Their technicians are professional and pleasant to work with. They service both my air conditioning and heating units, and there have not been any major problems. They have competitive pricing for the great quality of service that they provide. I have been using them for a little over a year now and I will continue to use them in the future.