Super helpful and jovial technician. He was able to troubleshoot my leaking AC problem over the phone for free. Amazing. I called about 20 other companies trying to book an appointment and Dewerk was the only one that put me in touch with a technician, who not only called me back to try to fit me in, but also listened to the problem and explained a quick thing to check. And he was right and saved me $$$. Thank you!!!