Ruud Condensate Drain Clog / Pan Overflow

Water leaking from Ruud indoor air handler or furnace cabinet, dripping onto floor or ceiling below.

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Safety Warning

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.

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Possible Causes

Algae buildup in PVC drain line, Cracked or rusted primary drain pan, Improperly sloped drain line, Blocked secondary drain outlet

How to Fix / Troubleshooting

Safety first: Turn off power to the indoor unit to avoid electrical hazards around water.

  • Step 1 – Inspect drain pan: Remove access panel and look for standing water in the primary pan under the Ruud evaporator coil.
  • Step 2 – Clear drain line: Use a wet/dry vacuum at the outside drain termination to suck out debris. Then flush from the air handler side with warm water and a small amount of vinegar.
  • Step 3 – Check slope and support: Ensure the PVC drain line slopes continuously downward from the unit to the termination. Add hangers or adjust as needed.
  • Step 4 – Secondary drain and safety: If a secondary drain pan and float switch are present, ensure the secondary line is clear and the float switch is functioning.
  • Step 5 – Pan repair or replacement: If the primary pan is cracked or rusted through, the coil assembly may need to be removed and the pan replaced by a technician.
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Repair Difficulty

Medium 3/5

Required Part

Condensate Drain Pan
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