Most furnaces installed in buildings have a flame sensor and an ignitor. If the ignitor fails, the flame sensor will not work. Problems with a gas furnace ignitor can be fixed using simple techniques. However, if the ignitor does not work at all, it will have to be replaced..
Then, how much does it cost to replace a furnace ignitor?
The average cost of furnace ignitor replacement done by a professional is around $195. The price range for this affordable furnace repair is $30 to $245. If the repair is made during an emergency call, cost can rise to $300 or more.
Secondly, what causes furnace ignitor failure? Below are listed some reasons that might cause your ignitor to go out prematurely: Debris from the heat exchanger or bugs/spiders can get on the ignitor while the furnace is not calling for heat and when there is a call for heat the debris/bug can short the ignitor out.
Beside this, can you clean a furnace ignitor?
Clean the dust off the hot surface igniter by leaving the igniter in place and blowing air through a straw. This part breaks very easily; don't even touch it. In fact, when you replace the furnace doors, do so gently to avoid breaking the igniter.
Why is my furnace ignitor not working?
The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. This is typically the problem if you can hear your furnace click on but it does not fire up. First, you need to turn off the gas to the furnace. Then, remove the front panel to find the ignitor or ignition sensor.
Related Question Answers
Where is the ignition sensor on my furnace?
The flame sensor is a rather simple device located at the burner assembly. It's not much more than a thin, usually bent, metallic rod that sits in front of the flame stream inside the furnace. The purpose of the flame sensor is to confirm to the system that whenever the gas valve is open, a fire is actually present.How long does furnace ignitor last?
four to seven years
Where is ignitor on furnace?
Troubleshooting a Hot Surface Ignitor (HSI) The igniter is located in the flow of gas entering the burners. When the thermostat calls for heat, 24 volts are sent to the electronic ignition control module, which energizes the furnace blower and other systems and sends 120 volts to the HSI.Can you manually light a gas furnace with electronic ignition?
If your furnace is equipped with an electronic igniter, you cannot light the furnace manually. However, you may be able to get the furnace working by turning off the igniter and resetting it. Find the paperwork for your particular furnace to locate the reset button or switch.Why a furnace will not ignite?
A gas furnace burns a mixture of air and natural or LP gas. Often times the reason air does not get to your furnace's igniter is because it is restricted. The main reason for this air restriction is usually traced back to dirty air filters. So check them if your gas furnace fails to ignite when you turn the system on.What is an ignitor on a furnace?
The hot surface ignitor is a device used in most modern furnaces to ignite the gas you use for heat. It's a relatively simple component that works quite like a toaster in that its heat is generated by forcing 120 volts through an exposed, resistant material.How much does an ignitor cost?
Ignitor Replacement Cost An ignitor replacement costs $150 to $250 unless it happens in the middle of the night. After hours or emergency service fees can raise that to $300 to $500.What causes furnace ignition lockout?
All furnaces need to have adequate ventilation and a dirty air filter can cause a system lockout to occur. Another common problem that can cause a furnace lockout is a dirty flame sensor. The flame sensor comes into contact with the flame, and it is quite common for debris to buildup on it.Should I repair or replace my furnace?
If there is a significant difference, then it's time to replace your furnace. Repair: If your furnace system is less than 15 years old and the cost of repair is less than half the cost of replacement. Replace: If your furnace system is more than 15 years old and requires a costly repair to maintain efficiency.Can I replace my own furnace?
Yes, furnaces do fall into the permit zone. In most states, a furnace or mechanic permit is a requirement by law for those who need to fully replace a furnace. Furnace replacement and installation is a major home project requiring a great deal of work by installation teams and contractors.How much does it cost to replace a thermocouple?
Thermocouple Replacement - $20-$150 Calling a professional plumber to install a new thermocouple should only be up to $150. If you do the work yourself, you will only pay the price of the part which is about $20.How much does it cost to repair a furnace?
Furnace Repair Cost. The average cost homeowners face for furnace repair is about $250. In most cases, homeowners spend between $130 and $400 to repair their furnace. Ultimately, furnace repair cost can range from $100 to $1,000 depending on the issue with the furnace.Can a bad thermostat cause a furnace to short cycle?
Thermostat Troubles Can Cause Short Cycling Your thermostat could also cause the HVAC system to cycle on and off rapidly, a process known as short cycling.How much does it cost to replace furnace ignitor?
The labor costs involved to replace the ignitor will vary by area but generally start at $75. Including the part and service, the costs can go up to $300. When the furnace ignitor malfunctions, the furnace won't operate.How do you know if a flame sensor is bad?
Good flame sensor: A properly functioning flame sensor will shut down the gas valve when it does not sense a flame when the furnace should be firing. Bad flame sensor: When the furnace has fired and is burning hot, a bad flame sensor won't sense the heat and will shut down the furnace. 
