I've needed HC Services to come out a couple of times, usually in emergency situations, as well as for regular maintenance on my AC system. I've found them to be thorough, professional, and polite. They seem to know exactly what they're talking about, and are able to be matter-of-fact without the salesman type personality, which I appreciate. Their accommodating service comes with a helpful and knowledgeable staff, and they've even come out after hours to help.