Airtech has installed two furnaces, one AC unit and one whole house humidifier for me starting in 2010. I am also a member of their Comfort Club. There has been several hiccups along the way, but I talked to the owner and since I had valid issues, Jeren did follow through and corrected the problems for me. One issue over the years has been the techs they have sent out to the house sometimes just aren’t quite up to snuff. I’ve mentioned this and lately things may be better; the last tech sent out seemed to know his stuff, but as in any business, the staff is really the key to whether or not you have a good experience. If you find someone you trust, ask for them in the future.