Complaint: customer has had to turn the heat up higher than usual. Also, seems to blow air thats not very hot. Found control board logged fault codes 2 to 3: pressure switch failed to close. Cleaned out pressure port on inducer. Thermostat reads high +1. Calibrated thermostat. Set manifold pressures. Set lower speeds. Covered filter opening. Turned up humidifier to 40. Tested operation.