Alpha Improper Combustion / Insufficient Air

Furnace ignites but flame appears yellow and lazy instead of blue and stable.

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

Blocked burner air openings, Restricted combustion air intake, Incorrect gas pressure, Cracked or dirty Alpha heat exchanger affecting airflow

Safety: Yellow flames can indicate carbon monoxide risk. Turn off the furnace and do not operate until corrected.

Check combustion air: Ensure combustion air openings or intake pipes are not blocked by dust, insulation, or debris.
Visual burner check: With power off, inspect burners for dirt or rust. Do not attempt to adjust gas orifices.

Combustion analysis and gas pressure adjustment must be performed by a licensed technician with proper equipment.

Professional Required 5/5

Alpha Burner Assembly

Check Price on Amazon

We may earn a commission from links on this page.