Lennox Condensate Leak

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

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Clogged condensate trap, Disconnected or cracked condensate drain hose, Improperly sloped drain line, Cracked Lennox condensate collector box

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

1. Locate leak source: Remove panels and observe where water is originating during operation.
2. Clean trap: Remove the condensate trap, flush with warm water, and reinstall per Lennox instructions.
3. Inspect hoses: Replace any brittle or cracked drain tubing and ensure proper slope to the drain.

If the collector box is cracked, it must be replaced by a technician.

Medium 3/5

Condensate Trap

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