Resetting a furnace igniter usually involves performing a power cycle to clear a system lockout, though some electric models have a physical high-limit reset button. If the igniter is cracked or covered in carbon buildup, it will need to be inspected and potentially cleaned or replaced.
To get your furnace to kick on, first verify your thermostat is set to "Heat" and raised at least 5 degrees above room temperature. Next, check that the furnace power switch (usually resembling a standard light switch on or near the unit) is toggled "ON".
6 Reasons Why Your Furnace is Not Igniting
The Short Answer Is: Warning signs of a bad furnace ignitor include the furnace not starting or heating, a noticeable clicking sound without ignition, or frequent short cycling where the furnace turns on and off rapidly. Additionally, if the ignitor appears cracked or discolored, it may need replacement.
The manual reset process takes only 30 seconds to 3 minutes to flip the power off and on. However, after power is restored, it takes the furnace about 5 to 15 minutes to complete its safety checks, ignite the burners, and start blowing warm air.
Resetting a furnace igniter usually involves performing a power cycle to clear a system lockout, though some electric models have a physical high-limit reset button. If the igniter is cracked or covered in carbon buildup, it will need to be inspected and potentially cleaned or replaced.
The heat exchanger is often considered the most costly part of a furnace to repair or replace. It is a critical component that transfers heat from the combustion process to the air that circulates throughout your home. Over time, heat exchangers can crack due to the constant heating and cooling cycles they undergo.
Parts: A new hot surface ignitor typically costs between $30 and $60. Labor: Professional labor costs usually range from $120 to $240, depending on your location and the service provider. Total Average Cost: Most homeowners can expect the total furnace ignitor replacement cost to be between $150 and $300.
A furnace ignitor typically lasts between 3 to 7 years, though exact lifespan depends on its material.
Without the ignitor, your heater won't blow hot air. It's a critical part of the furnace system since it is responsible for lighting the burner that starts the combustion process that turns fuel into heat. In older units, the furnace ignitor is a traditional pilot light.
Ignition or Pilot Light Problems: Older furnaces rely on a pilot light that can blow out. Modern systems use electronic igniters—if these crack or fail, gas will not ignite. Gas Supply Issues: A closed gas valve or utility interruption will prevent the furnace from producing heat.
When your furnace clicks but refuses to turn on, it typically means the electronic ignition sequence has failed. This is often caused by a dirty flame sensor, a cracked or burnt-out igniter, or a faulty gas valve.
If your thermostat clicks but the furnace doesn't turn on, it could be due to a tripped circuit breaker, a malfunctioning ignition system, or a clogged air filter. It may also indicate an issue with the furnace's control board or a gas supply problem.
To reset your furnace safely, lower the thermostat and turn off the power at the furnace switch or circuit breaker. Wait 2 to 5 minutes, then turn the power back on. If your furnace has an internal reset button (usually red or yellow), press and hold it for 30 seconds.
5 Warning Signs It's Time for Furnace Replacement
You should probably Replace if: [ ] The repair costs more than 50% of a new unit. [ ] The furnace is over 15 years old. [ ] You have had to repair it more than once in the last 2 years.
How to Reset Furnace Igniter
The Most Expensive Parts to Repair in a Furnace
Replacing a furnace ignitor typically takes 15 to 45 minutes. An experienced technician can often complete the job in under 20 minutes. The process involves shutting off the power, removing the access panel, swapping out the part, and reassembling the unit.
What fails first on a furnace? The most common early failures are the furnace ignitor or flame sensor, as they experience regular wear and tear and are critical to starting the heating cycle.
A standard residential furnace lasts 15 to 20 years. However, the exact lifespan varies based on the type of system and how well it is maintained.
Try the Salvation Army, a local church, or a community action agency. Their rules may be different. Ask About Payment Plans: Many local HVAC contractors, including Smart Climate Solutions, offer payment plans for urgent repairs because we believe everyone deserves a warm home.