Water leaking around the base of a high-efficiency Goodman furnace.

Safety: Turn off power before working around water and electrical components.

Steps:

• Inspect drain tubing: Check all vinyl or PVC condensate lines from the furnace to the drain. Reconnect loose lines and replace cracked tubing.
• Clean condensate trap: Remove the trap (note orientation), flush with warm water, and clear any slime or debris. Reinstall correctly.
• Verify slope: Ensure drain lines slope continuously downward to the drain with no sags.
• Check collector box: If water appears to leak from the plastic collector box on the furnace, a technician should inspect for cracks and replace if necessary.

Dry the area and monitor for further leaks. Persistent leaks require professional diagnosis.