Goodman air conditioner indoor coil or refrigerant lines sweat excessively and drip water

Safety first: Turn off power before working near refrigerant lines or coil cabinet.

Steps to reduce sweating:

• 1. Replace suction line insulation: Inspect the larger copper line from the Goodman condenser to the indoor unit. Replace missing or damaged insulation with closed-cell pipe insulation of the correct size.
• 2. Seal air leaks: Use foil tape or mastic to seal gaps around the coil cabinet where humid air can contact cold surfaces.
• 3. Improve dehumidification: Ensure the system is properly sized and running long enough cycles. Avoid oversizing and set fan to AUTO instead of ON.

When to call a professional: If sweating is severe, a technician should check supply air temperature, airflow, and refrigerant charge.