Sunset mechanical had serviced my old system for several years before I made the decision last year to have the whole system replaced. There was no doubt in my mind who would be doing that replacement. Sunset Mechanical. It took 3 days to do the replacement but it was well worth it. My electric bills have almost been cut in half. This was a very hot summer. My house is 1400 square feet. My highest electric bill was only $92.00. (my house is total electric)These guys are professional, efficient and thorough. The Bryant Evolution system is one of the best investments you can make in your home and Sunset Mechanical is the only company I would let service that system.