Water leaking around the base of the furnace or onto the floor during heating.

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

• Inspect condensate trap and hoses: Look for cracks, loose connections, or overflowing trap. Tighten hose clamps and replace damaged tubing.
• Clear drain line: Use a wet/dry vacuum at the drain termination to remove clogs. Flush with a mixture of warm water and a small amount of vinegar.
• Check vent slope: Ensure PVC vent pipes slope back toward the furnace or toward the termination as specified in the installation manual. Correct any sags that collect water.
• Dry the area: After repairs, dry the furnace base and monitor for new leaks.