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 for gas leaks 6. Tested functionality and cleaned flame sensor 7. Tested functionality and cleaned pressure switches and ports 8. Inspected / replaced return filter. 9. Inspected return plenum for debris/ dirty. 10. Inspected evaporator coil. 11. Tested functionality and visually inspected surface igniter 12. Checked blower amp draw. 13. Measured temperature differential from supply to return. 20 degrees measured. All safeties and sensors functioning properly. Unit in good working order. Performed dryer vent cleaning. Noticed that dryer vent was not putting out enough air. Upon further investigation I found the dryer vent flex falling apart. Suggested repair was approved by homeowner over the phone. Performed repair with sealing around dryer vent.