Water leaking around the base of a high-efficiency Rheem furnace

Safety first: Turn off power before working near electrical components. Water and electricity are a dangerous combination.

• Locate condensate system: Identify the plastic trap and drain hoses connected to the furnace and flue.
• Clear trap: Remove the trap (note orientation), flush it with water, and clear any slime or debris. Reinstall in the same orientation.
• Inspect hoses: Check for cracks, kinks, or loose connections. Replace damaged tubing with appropriate condensate hose.
• Verify slope: Ensure the drain line slopes continuously downward to the floor drain or pump.

Do not operate the furnace with a known condensate leak; water can damage the control board and blower.