You probably know the obvious signs of a broken HVAC system in your Georgia home. In the summer, if your HVAC shuts off completely or starts blowing warm air, you don't hesitate to call your HVAC contractor to come fix the problem. Unfortunately, not all HVAC issues are that obvious. Sometimes HVAC issues are disguised as other problems, making them difficult to diagnose. Be on the lookout for these signs there’s a problem with your HVAC system.