We've been using Airflow to service our HVAC for several years, and for two different homes with very different quality systems. They do an exceptional job, and their prices are reasonable and fair. I've never been advised to replace or repair something unnecessarily. When we recently sold our townhouse, the inspector for the buyer noted in his report that it was clear that our system had been meticulously cared for. In the process of buying our new home, the owner at Airflow graciously answered some questions I had about the system that was installed in our new home before we bought the house (the sellers installed a low-end system and I was concerned about it). Everyone they send out is polite and courteous. Everyone on the phone is helpful and friendly. Just an all-around solid company, and I don't hesitate to recommend them to friends and neighbors every chance I get.