Typically, you'll find it inside the air handler, either next to or above your furnace. In most newer systems, the button is often directly next to the blower motor, while in older systems, it may be harder to spot as it is sometimes underneath or behind the motor.
Checking your thermostat is the best place to start. Make sure it's set to “heat” and that you've set the temperature higher than the current room temperature. If that doesn't resolve the problem, try switching your fan to “on” to force the furnace to start working.
First of all, be aware that not all furnaces have a reset button; however, most do. If your electric furnace has one, it's most likely located within the blower housing, next to the motor. If you own a gas furnace, it's probably located within the control panel. Check your owner's manual for specifics.
Use the Furnace's Power Switch
Most furnaces have the switch on the exterior of the metal cabinet that contains the blower unit. Push the switch to the off position. Wait for two to three minutes, then turn it on again. If your furnace still won't respond, proceed to the next step.
Typically, you'll find it inside the air handler, either next to or above your furnace. In most newer systems, the button is often directly next to the blower motor, while in older systems, it may be harder to spot as it is sometimes underneath or behind the motor.
Leave the breaker(s) off for at least 10 minutes while the system is off and “rebooting.” After 10 minutes have elapsed, go back to the breaker box and flip the HVAC breaker(s) back on.
In AC systems, the air conditioner reset button is on the outside unit's lower edge, typically close to the ground. Some models have the reset button located behind the service panel, which may require tools to remove. Reset buttons are usually red or yellow with a clear “reset” label.
It's normal for the reset button to trigger occasionally, and that actually means it's serving its function. However, if you find yourself frequently resetting a tripped furnace, chances are the problem is from a malfunction.
Gas Furnace - The emergency switch is typically a red switch located on or near the furnace unit. It may be mounted on the side of the furnace or on a nearby wall.
If nothing's happening when you're expecting the whir of a blower, check the circuit breaker and fuse. At your electrical panel, make sure all switches related to the HVAC system are on. Reset any tripped breakers and replace all blown fuses, and your furnace should kick back on.
The cause of your furnace not blowing hot air could be the thermostat configuration, a dirty air filter, the high limit switch, a clogged condensate line, insufficient fuel, leaky ducts, ignition problems, a blocked burner, flame sensor issues, gas valve malfunctions, a cracked heat exchanger, or a clogged coil.
Most likely, your furnace is making a clicking noise and not providing heat because your furnace's spark igniter is trying to ignite your pilot light or burners but is failing to do so. In other words, there's an ignition system malfunction that needs to be fixed. Otherwise, your furnace won't start.
Mind the safety lock. When resetting your furnace, make sure to press the button only once to avoid engaging the safety lock. Reach out to professionals. In most cases, the safest course of action is to contact your go-to HVAC company if your furnace doesn't work after a power outage.
The furnace switch is the unit's power source and typically located next to the furnace or on its side. It closely resembles a light switch. First, confirm the switch is in the "on" position, and if it is, see if your furnace starts up.
In most newer systems, the reset button is conveniently located near the blower motor, which makes it easy to spot and use when needed. In older systems, however, it may be more challenging to locate the reset button on your furnace, as it can sometimes be found underneath or behind the blower motor.
You should not reset the burner more than two or three times, the reason is you may be pumping some fuel into the heat exchanger that is not igniting.
The thermostat may have a dead battery, so replace them with fresh ones and try again. Your furnace may turn on right away after this. If it doesn't, you may have a faulty power circuit. Have an HVAC professional diagnose this issue, and provide you with professional recommendations.
Ask twenty professional HVAC contractors the question, “How Much Does A New Furnace Cost?” and you'll probably get the same answer... “It depends.” On average, the cost of a new furnace can range from $2,000 - $14,2001. However, factors like furnace efficiency, type, size, and much more can impact this range.
Shut off your system by hitting the isolation switch, wait 30 to 60 minutes and then turn it back on. This manual reboot fully disconnects your AC unit from power, allowing all electrical components to reset.
Steps to Reset Your Furnace
If you can't find a switch at the furnace you can turn off the circuit breaker to the furnace at the main circuit breaker box. Wait about 10 seconds. Turn the switch or breaker back on and check the furnace to see that it has power again.
If 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. Occasionally, the flame sensor rod may be coated with dirt and debris, causing the furnace to shut off.
If the lights are still illuminated or flashing with the flame sensor wires disconnected, the primary control is defective and should be replaced.