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Resetting your gas or electric furnace is a simple task that can often resolve common issues such as a malfunctioning thermostat or a tripped circuit breaker. Whether you have a gas or electric furnace, knowing how to reset it can save you time and money on unnecessary service calls. Keep reading to learn how to safely reset your furnace to keep your home comfortable when it’s cold outside.

What Is a Furnace Reset Button?

The furnace reset button is a crucial safety feature within your home's HVAC system, allowing for rapid shutdown in case of overheating or malfunction. When triggered, it cuts power to the furnace to prevent potential hazards. However, frequent tripping of this button signals an underlying issue such as overheating.

Why You Might Need to Restart Your Furnace

During the colder months, maintaining a functional furnace is crucial for indoor comfort. In certain situations, such as when the furnace becomes overheated, a reset may be necessary to ensure proper operation. This action halts the furnace and allows for a safe restart, preventing potential issues like a tripped circuit breaker. Here are some reasons why you might need to reset the furnace:

• Fuel Depletion: Running out of fuel can cause the reset button to trip. Check the fuel tank and refill if empty before attempting a reset.
• Closed Gas Valve: A closed gas valve connection can impede furnace operation. You may be able to remedy this problem by opening the valve manually.
• Flame Sensor Problems: Malfunctioning flame sensors can trigger a reset. In such cases, we advise contacting Chapman for a prompt inspection and efficient repairs.

Where Is the Reset Button on a Furnace?

The reset button on a furnace serves as a vital safety feature. It’s typically colored red or yellow for easy identification and is commonly found inside the blower compartment. Remember that it’s normal for furnaces to require occasional resetting, especially in response to overheating. If the furnace frequently requires resetting, you should have it inspected to address any underlying issues.

How to Reset a Gas Furnace 

Resetting a gas furnace involves several key steps to ensure safe and effective operation. 

1. Ensure the Pilot Light Is Out: Verify that the pilot light is extinguished before proceeding with the reset.
2. Adjust the Thermostat Setting: Reduce the thermostat temperature setting to its lowest level.
3. Power off the System: Switch off the power supply to the furnace by turning off the corresponding breaker in the circuit box.
4. Shut off the Gas Supply: Shut off the main gas supply to the furnace, keeping the pilot gas supply line open.
5. Relight the Pilot Light: Use a lit match to relight the pilot light by holding it near the pilot flame jet's opening.
6. Restore Power and Gas: After relighting the pilot light, turn the circuit breaker and the main gas supply back on.
7. Press the Reset Button: Hold down the reset button for approximately 30 seconds.

How to Reset an Electric Furnace 

Resetting an electric furnace involves a few different steps, which are outlined below.

1. Power off the System: Turn off the power supply to the furnace. Locate the corresponding breaker in the circuit box, and turn it off also.
2. Find the Reset Button: Locate the reset button. It’s typically found inside the blower compartment on the side of the blower motor.
3. Press the Reset Button: If the reset button pops up, press it down to reset the furnace. Exercise caution as the housing may be hot.
4. Replace the Cover: Once the reset is complete, return the cover to the blower compartment.
5. Power On the System: Turn the power back on by flipping the breaker switch in the circuit box.

Top-Notch Furnace Services in Indianapolis and Surrounding Areas

Chapman Heating and Air has served Indianapolis and its surrounding communities with exceptional HVAC and plumbing services for over four decades. We offer comprehensive services, including furnace repair, installation, maintenance, heat pump repair and installation, and indoor air quality solutions. Whether you're facing furnace issues or seeking to enhance indoor comfort, our team is dedicated to delivering reliable and efficient service. Contact our team of expert technicians to schedule an appointment today.