Complete Comfort Heating and Cooling was just here recently doing a check-up on my air conditioning unit. They looked that over and did a filter change. They were very thorough and very respectful when they came in the house as far as making sure their shoes weren't dirty and stuff like that. They were very polite. I've been using their service for quite a while, more years than I can count, and I'm very pleased with their work. They're very reliable and show up when they say they will, right on schedule. I have them come every year to get furnace ready in the fall and get the AC ready in the spring.