Work Performed: Performed maintenance on two 2022 Lennox 2-stage furnaces. Both units are in good condition. Completed full maintenance checklist, including: - Inspection and cleaning of burners, flame sensors, and igniters - Checked blower assemblies and confirmed smooth operation - Verified gas pressures, heat rise, and temperature split within manufacturer specifications - Checked drain lines, venting, and electrical connections - Confirmed all safety switches and limit controls are functioning properly Both furnaces are operating efficiently with no issues or safety concerns at this time.