Invoice Summary Completed scheduled maintenance on multiple systems: 2024 Evan’s Premier furnace – Full maintenance performed, furnace operating in excellent condition. 2022 Navien tankless water heater – Completed flush and full maintenance, unit operating normally. Older fireplace – Maintenance performed, system operating safely. Maintenance checklist: Checked and replaced filter (client owned ) Inspected blower assembly, wheel, and motor Verified heat exchanger condition and temperature rise Inspected burners, ignition system, flame sensor, and gas valve operation Checked venting and condensate drainage Tested safety controls and limit switches Inspected wiring, electrical connections, and amp draws Verified thermostat and control operation Flushed tankless heat exchanger and cleaned intake/exhaust screens Checked tankless ignition, flame signal, and water flow sensor Inspected fireplace burner, pilot assembly, thermocouple/thermopile Cleaned glass and inspected gasket seal on firep