Termet Reduced Efficiency / Poor Combustion

Furnace operates but gas consumption seems unusually high compared to previous seasons.

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

Dirty burner, Incorrect gas valve adjustment, Fouled heat exchanger on Termet unit, Faulty modulation control

Safety: Combustion adjustments must be done with proper instruments.

Schedule maintenance: Have the burner and heat exchanger cleaned annually according to Termet’s maintenance schedule.
Check filters and vents: Ensure airflow is not restricted, which can reduce efficiency.

Gas valve calibration and combustion tuning must be performed by a Termet-certified technician using a combustion analyzer.

Hard 4/5

Main Burner Assembly

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