Arrived on site for heating maintenance on 2019 carrier furnace. 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. Inspected drain lines and treated to prevent blockages 15. Tested inducer motor and pressure switch 16. Tested and cleaned flame sensor Found elevated levels of particulates in the air with the air report. Recommended using merv 11 4 inch filters as furnace has the capability to take 4 inch filters. Also found slightly elevated levels of CO2 recommended homeowner l
