On arrival I spoke with Rob who informed me that when they reset the breakers the thermostat was blank and the HVAC system would not turn on. We walked in the home the thermostat was set to 68 and the house was cool. I then performed an A/C tune-up on the Carrier heat pump system. Checked the electrical, mechanical and performance systems of the unit. Cleared, cleaned, flushed and treated the drain line and cleaned the exterior of the air handler. Verified outdoor compressor wiring is secure and washed the outdoor coil. I did find the media filter 20x25x4" is dirty and the breaker on the outdoor unit is oversized. No other issues found. The system is operational at this time.