Maytag
Overfiring or Oversized Furnace
Furnace runs but gas consumption seems unusually high and house heats too quickly.
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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
Incorrect gas orifice size, Incorrect manifold pressure setting, Furnace capacity too large for home, Blocked return air causing high temperature rise
How to Fix / Troubleshooting
Safety: Gas input and manifold pressure must be set according to Maytag specifications. Homeowners should not adjust gas regulators.
Steps to check (non-invasive):
- Verify filter and airflow: Ensure proper airflow to avoid overheating.
- Review furnace size: Compare furnace BTU rating on the nameplate to the home's size; if obviously oversized, discuss options with a contractor.
When to call a technician: A professional should verify manifold pressure, orifice sizing, and combustion safety.
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Repair Difficulty
Hard
4/5
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