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A furnace reset button is an important feature included with your HVAC system. Designed to quickly shut the unit off, the function is key to safely heating your home. If your furnace reset button keeps tripping, it's likely that your furnace is overheating. This may indicate a need for furnace repair services.

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What is a Furnace Reset Button?
All furnaces are equipped with a reset button. They are generally red or yellow and are located inside the blower compartment. The reset button is a safety feature that will shut down the furnace when a problem is detected, often a hot or overheating furnace, before it trips the circuit breaker.

It's not common for a furnace to require resetting on occasion. However, if the furnace frequently requires resetting, the furnace should be inspected by a repair expert.

What Can Cause the Reset Button to Trip?
Furnace reset buttons may be triggered by several different scenarios, including:

Loss of Fuel If you have a gas or oil furnace, the reset button may trip if you are out of fuel. This fix is as simple as making sure there is fuel in either the gas or oil tank. If this is the case, when you call for a refill, make sure you let them know that the tank is empty and the tank will need to be primed.
Blocked or Closed Gas ValvesBlocked or closed valves could be another reason the tank reset button keeps tripping. Checking to see if any of the valves have been closed accidentally could help solve the problem.
OverheatingIf a furnace isn't receiving enough airflow, it may overheat and trigger the reset button to trip. Make sure to clean or replace the air filters and keep the air vents open enough for proper airflow.
A Dirty Flame Sensor Occasionally, the flame sensor rod may be coated with dirt and debris, causing the furnace to shut off. Keeping the flame sensor rod clean by wiping it off regularly will help keep this from happening.
A Dirty Air Filter A clogged or dirty air filter may cause the furnace to trip. Changing or cleaning your HVAC air filter regularly (at least quarterly) will help to reduce the strain on your furnace and keep it functioning properly.

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