INVOICE SUMMARY Work Performed – Furnace Maintenance (2012 American Standard 2-Stage) - Performed full furnace maintenance - Cleaned burners as needed (light rust around burners; surfaces cleaned) - Vacuumed furnace interior - Cleaned flame rod and tested ignitor - Tested all amp draws and inspected major components - Inspected blower; light dust noted - Cleaned pressure switch tubing - Cleaned and flushed drain line and condensate trap as needed - Combustion analysis performed – 8 ppm CO - Heat exchanger testing performed - Verified venting, safety controls, and overall system operation - Client keeps EAC filters clean Results - Furnace operating properly with no errors to report - CO levels measured at 8 ppm - No water damage present - System in good shape for its age