Arrived on site for QC and heating maintenance. On 2025 American standard heat pump. Customer had no questions about thermostat operation or unit operation at this time. However he had noticed that the back children’s rooms tended to be a little colder. Heatpump- heating 1. Visually inspected condenser coil for debris/ dirty. 2. Inspected condenser fan motor. 3. Inspected condenser fan blades. 4. Inspected/ cleaned wiring connections. 5. Tested compressor/ condenser fan motor capacitor. 6. Checked compressor amp draw. 7. Checked condenser fan motor amp draw. 8. Inspected / replaced return filter. 9. Inspected return plenum for debris/ dirty. 10. Inspected evaporator coil. 11. Inspected blower motor/ blower wheel. 12. Checked blower amp draw. 13. Measured temperature differential from supply to return. 20 degrees measured. 14. Tested capacitor and contactor (outdoor electrical) 15. Rinsed condenser unit to promote heat exchange 16. Tested emergency heat and found no issues Found high