Furnace Maintenance: Reccomend plug-in carbon monoxide detector for added safety and peace of mind. Adjusted gas pressures to 1.7"wc / 3.5"wc to meet manufacturing requirements. Replaced flame sensor connector . Added teflon tape to the collector box plug to avoid any further water damage. Flushed the condensate P-trap and drain lines to maintain clear, efficient flow. Checked pressure switch tubing to ensure reliable performance. Cleaned and polished the flame sensor for optimal ignition. Ran full diagnostics to confirm the system is running smoothly and efficiently. Stay Warm,