Furnace Maintenance: Replaced media filter with homeowner provided media filter (16x25x1) 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. Adjusted the high fire gas pressure from 3.7 to manufacturing 3.5"wc for optimal efficiency. HRV Maintenance: Removed and cleaned the core also the filters. System is operating well. Humidifier Maintenance: Humidifier Pad #10 can last another season. System is operating well. Water tank maintenance: 3/4 Discharge leg for the temperature and pressure valve should be added to the pressure relief valve for added safety.