How hot does a furnace ignitor get?
How hot does a furnace ignitor get? around 1,800 to 2,500 degrees Fahrenheit The HSI heats up to around 1,800 to 2,500 degrees Fahrenheit and glows red-hot. Then the gas valve opens, and the burner gas is ignited by the HSI. Once a proper flame is sensed by the flame sensor, the HSI turns off and stays off until the next heating cycle. Why is my gas heater clicking? Clicking sounds are one noise you don't want to hear. Gas furnaces, especially, should be checked out by an HVAC professional for any clicking sound or other strange noise. Clicking from...