Average Cost of Furnace Ignitor Replacement Homeowners typically pay between $120 to $225 to have the ignitor replaced on their furnace. If the unit is still under warranty, you’ll only pay for labor which runs around 2 hours total and cost around $150.
Anything over 125 volts is going to cause premature light bulb failure and furnace ignitor failure. … 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.
Thereof, How do you know if your ignitor is bad?
If you have a faulty furnace ignitor, it won’t produce that small spark to heat the air coming from your furnace. Without it, your heater blows air at the same temperature as the cold outside air. Cold air blowing through your vents is a good sign that you have a heating problem within the furnace.
Also to know is, How do I know if my furnace ignitor is bad? Your furnace won’t run: The most obvious sign that your ignitor is bad is that it won’t ignite, and this generally manifests itself in your furnace failing to run when you activate it.
Subsequently, question is, How do you change a furnace ignitor?
Also, 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.
How long should Furnace Ignitor last?
about seven years
What causes furnace ignitor failure?
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. It is a good idea to keep your furnace and heat exchanger clean so this does not happen.
When should I replace my furnace ignitor?
According to the Gas Furnace Guide, ignitors have an average lifespan of four to seven years. So, after about seven years, you may have to replace the ignitor; however, you probably won’t have to replace the entire furnace because other parts, such as the heat exchanger, can last more than 15 years.
How do you test a furnace ignitor?
– Make Sure The Furnace As At Room Temperature. …
– Turn Off The Furnace. …
– Switch Off Circuit Breaker. …
– Remove Furnace Service Panel. …
– Look For Visible Damage. …
– Remove Ignitor Wires From Socket. …
– Test The Ignitor With A Multimeter.
How much does an ignitor cost?
An ignitor typically costs between $30 and $50.
How many ohms Should a furnace ignitor have?
90 ohms
Can you fix a furnace ignitor?
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.
How do I know if my furnace spark ignitor is bad?
No Cold Air If you have a faulty furnace ignitor, it won’t produce that small spark to heat the air coming from your furnace. Without it, your heater blows air at the same temperature as the cold outside air. Cold air blowing through your vents is a good sign that you have a heating problem within the furnace.
How many amps does a hot surface igniter pull?
4.75 A.
How often do furnace ignitors fail?
According to the Gas Furnace Guide, ignitors have an average lifespan of four to seven years. So, after about seven years, you may have to replace the ignitor; however, you probably won’t have to replace the entire furnace because other parts, such as the heat exchanger, can last more than 15 years.
How do you test a direct spark igniter?
Insure the multimeter is set for AC milliamps and turn on the test power cord switch to power the ignitor. If there is no spark, replace the ignitor. Monitor the input current with the multimeter set on AC milliamps for 5 minutes. If at any time the reading drops below 300 milliamps AC, the ignitor should be replaced.
What causes ignition failure on a furnace?
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.
Don’t forget to share this post 
References and Further Readings :
