INVOICE SUMMARY 2017 KeepRite Single-Stage Furnace – Maintenance Work Performed - Completed full maintenance on high-efficiency furnace. - Combustion and temperature rise good. - Inspected burners, flame, venting, and drain system; no concerns noted. - Filter condition good; area clean. - Furnace in good overall condition. Results / Recommendation - Furnace operating normally with no issues. - Recommend AC maintenance in the spring. Maintenance form attached