I have had excellent service with Interstate. I will not use any other company. I trust Interstate Heat and Air completely. They always make sure I am satisfied with their work and answer any questions I might have. Each time I have used this company the service reps treat me as a friend or family. They truly care about their customers. Thank you Interstate for caring about me and my well being. I am 75 yrs old and I have never had a company that really care about their customers. On a scale of 1 to 10, I would give them a 20.