Keeprite Weather-Related Venting or Combustion Issue

Furnace shuts off on very cold or very windy days but runs normally in mild weather.

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.

Possible Causes

Wind-driven vent pressure affecting pressure switch, Snow or ice partially blocking intake/vent, Marginal gas pressure under high demand, Undersized venting

How to Fix / Troubleshooting

Safety: Turn off power and gas before working on vent terminations.

Steps:

Inspect vent and intake: Clear snow, ice, or frost from PVC terminations. Ensure terminations are installed per Keeprite guidelines to minimize wind effects.
Check for ice in condensate lines: Make sure outdoor sections of condensate drain are protected from freezing.

If the furnace only fails under extreme conditions, have a technician evaluate vent sizing and gas supply capacity.

Repair Difficulty

Medium 3/5

Required Part

Vent Pipe Assembly

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