A homeowner in Alba, Texas requested a heating tune-up before the cold weather arrived. Family Air HVAC Services performed a comprehensive fall maintenance check on their heat pump system. The heat pump was running perfectly, but we discovered the emergency heat wasn't working properly. Our technician found a faulty high limit switch that was preventing the heating elements from turning on. We replaced the defective switch and tested the system. All heating elements now operate correctly. The customer was pleased we caught this issue during routine maintenance rather than during a cold snap when emergency heat would be needed most.