i have used at least 5 different AC companies in the last few years. I used them once because they were poor at service, or wanted to charge me for things I didn't need. I had a friend suggest i call Schiller. It is the best experience I've had with an AC company. Heather was great on the phone, in getting me on their schedule. Brandon determined the thermostat which was installed recently was the wrong one. This company has just become my new AC company when I have problems in the future