Aprilaire humidifier bypass duct is sweating or dripping water

Safety first: Turn off furnace power before working around ductwork.

• Insulate duct: Wrap the bypass duct with appropriate duct insulation to prevent condensation on the exterior.
• Seal joints: Use foil tape or mastic to seal all duct joints and connections to prevent moist air leakage.
• Check damper position: Ensure the bypass damper is closed during cooling season to reduce moisture-laden air in the duct.
• Control humidity: If indoor humidity is excessively high, adjust the humidifier setpoint or use an Aprilaire dehumidifier to reduce overall moisture.