Mike is very prompt and responsive, even if you call after hours. The other nice thing is that Mike actually answers the phone and is able to discuss the problems with you on the phone. Mike is extremely knowledgeable and takes the time to go through all the options and explain everything in as much detail as needed to make you feel comfortable with your decision. When we did have him put in our a/c system Mike offered to put our system in on a Sunday morning, no extra charge! We’re very happy with our a/c unit and even happier that we have found a great HAVC guy!