Our a/c continued running even with the thermostat turned off. Tyler came out and as so as je removed the cover of the a/c unit he saw the pressure switch was bad and needed replacing. Tyler did some more testing and found the disconnet was bad. He made the necesssry repairs so we could cool our hose. Tyler was freindly, professional, and courtious. We have used Nytech for about 5 years now for hvac and are very happy with the service and cost.