How to Reset Your Furnace: Does It Have a Reset Button?

When a furnace stops working properly, homeowners often look for an easy fix, such as a reset button. Many wonder, is there a reset button on a furnace? The answer varies depending on furnace type, brand, and model. While some furnaces include a dedicated reset button, others rely on different safety mechanisms or controls. Understanding how to safely reset a furnace and troubleshoot common issues is crucial for maintaining home heating efficiency and safety.

Furnace Type	Reset Button Presence	Common Reset Methods
Gas Furnace	Often Yes	Reset Button, Thermostat Reset, Circuit Breaker
Electric Furnace	Rarely	Power Cycle, Thermostat Reset
Oil Furnace	Sometimes	Reset Button, Power Cycling
Older Furnaces	Sometimes	Manual Reset, Thermostat or Power Reset

Furnace Types and Their Reset Mechanisms

Furnaces come in various types including gas, electric, and oil-fired models. The presence of a reset button depends heavily on the furnace make and model. Gas furnaces commonly feature a reset button to address pilot light or ignition issues. Electric furnaces typically lack a dedicated reset button but may require a power cycle or thermostat reset to restore function. Oil furnaces sometimes have a manual reset button to reactivate the burner after the system shuts down.

Gas Furnace Reset Button

Most gas furnaces include a small, red or black reset button near the burner assembly. This button allows homeowners or technicians to manually restart the furnace ignition sequence after a fault like a flame outage. It is a safety feature designed to prevent continuous fuel flow if the flame is not detected.

Note: It is vital to follow manufacturer instructions and only press this button briefly. Holding the reset button too long can cause further safety lockouts or damage.

Electric Furnace Reset Options

Unlike gas models, electric furnaces rarely have a dedicated reset button. Instead, troubleshooting involves:

• Turning off the power at the circuit breaker
• Waiting a few minutes to allow capacitors to discharge
• Turning the power back on

This process resets the internal controls. Some electric furnaces may also require a thermostat reset or circuit board reboot.

Oil Furnace Reset Functions

Oil furnaces often feature a reset button similar to gas models but intended to restart the oil burner after shutdown due to burner lockout or safety triggers. The reset button is located on the burner motor or burner assembly.

Important: Multiple reset attempts without resolving the root cause can damage the burner. Consulting a professional technician is advisable if problems persist.

When and How to Use the Furnace Reset Button

Knowing when to use the reset button can prevent unnecessary repairs or dangers. The reset button is generally used after a system shutdown caused by:

• Ignition failure
• Flame loss
• Safety lockout activations
• Power disruptions

Before pressing reset, ensure the furnace is off and wait at least 5 minutes to allow the system to cool and reset sensors. Press the reset button once and release. If the furnace fails to restart or shuts down again quickly, further diagnosis is necessary.

How to Locate the Furnace Reset Button

The reset button on furnaces is usually located in one of several common areas:

• Near the burner access panel
• On or near the burner motor assembly
• On control boards inside the furnace cabinet

Tip: Consult your furnace’s owner manual or manufacturer website for the exact reset button location and proper reset procedure.

Safety Considerations When Resetting a Furnace

Resetting a furnace involves safety risks related to gas, electricity, and heat. Always take the following precautions before attempting a reset:

• Turn off power to the furnace at the circuit breaker
• Ensure adequate ventilation in case of gas leaks
• Wait for components to cool to prevent burns
• Only press the reset button once to avoid damage
• Call a licensed HVAC technician if unsure or if issues persist

Other Troubleshooting Steps to Reset a Furnace

If your furnace lacks a reset button or the reset doesn’t solve the problem, try these troubleshooting measures:

• Check the thermostat settings and replace batteries if needed
• Reset the furnace power by switching off and back on the circuit breaker
• Inspect and replace furnace filters to ensure airflow
• Look for error codes on newer furnace digital controls and consult manuals
• Examine furnace vents and ducts for blockages

When to Call a Professional HVAC Technician

If the furnace continues to malfunction after pressing the reset button, power cycling, or basic troubleshooting, it may indicate deeper mechanical or electrical issues. Complex problems such as:

• Malfunctioning gas valves
• Ignition system failures
• Faulty control boards
• Blocked or damaged flues

require expert diagnosis. Hiring a licensed HVAC professional ensures safe, effective furnace repair and maintenance.

Summary of Furnace Reset Button Information

Furnace Type	Reset Button Availability	Typical Reset Method	Safety Notes
Gas	Yes, usually	Press reset once after cooling off	Wait 5 mins; don’t hold reset
Electric	Rare	Power cycle via circuit breaker	Turn off power before resetting
Oil	Sometimes	Press reset on burner motor	Limit reset attempts; call technician if persistent