Performed furnace maintenance Pulled and cleaned thr flame sensor Checked Condensate drains Filter is not new but OK Burner manifold gas pressure set to 3.0" water column Temperature rise 49⁰ with the humidifier running Fixed a water leak on the humidifier supply line Humidifier water panel is in like-new condition Closed humidifier bypass damper to summer position Run tested AC Outdoor coil is OK Refrigerant charge is correct Temperature drop 18⁰ System is operating within factory specifications at this time.