I cannot say enough good things about Indoor Air. I have been a customer for almost 20 years. They installed both my furnace and AC. They service both twice a year. I still have to call them from time to time – a mouse chewed through wires on my AC one summer, something got clogged in my furnace just last week. Whenever I call they come quickly, they wear booties to respect my home, they work efficiently and they fix the problem. Sometimes the work is free since I am a maintenance customer. They like my cats too. Which is a bonus. I highly recommend.