Atlantic
Contaminant Combustion / Component Overheating
Furnace emits a chemical or plastic smell during operation.
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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
Plastic or packaging left on components, Overheating blower motor, Melting wire insulation, Non-approved materials stored near flue or heat exchanger
How to Fix / Troubleshooting
Safety: Turn off power and gas if the smell is strong or accompanied by smoke.
Steps:
- Inspect interior: With power off, remove panels and look for plastic film, tape, or packaging left on the heat exchanger, burners, or wiring.
- Check blower motor: Smell near the blower compartment. If the odor is strongest there and the motor is very hot, the motor may be failing.
- Clear surroundings: Ensure no chemicals, paints, or plastics are stored near the furnace or flue that could off-gas when heated.
Recommendation: If you cannot identify the source, have a technician inspect the furnace before further use.
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Repair Difficulty
Medium
3/5
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