I purchased a Groupon for this company knowing that my vents were in need of a good cleaning. Bill and Steve arrived on time. They were both extremely thorough going over my system and pointing out several things like mold. They went a step further and figured out how and why i had mold in my system. I had a clog in my AC condensation line which was causing water to leak and pool and my line wasn't draining properly. Steve went over all my options on correcting the issue. I did purchase additional services to sanitize the system. They both worked quickly and were professional. I would recommend this company and would hire them again.