The igniter glows red and then lights the burners in the gas furnace. Over time, the igniter is continually getting red hot and then cooling, creating stress on the element. Because of this, igniters have a 3-5 year life expectancy. They will eventually crack and need to be replaced.
Don't worry—an ignitor that goes bad is common for most furnaces. Fortunately, you can replace the ignitor without replacing the whole Furnace. Most ignitors last about seven years.
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.
You might not think that a dirty filter could cause an issue, but it's often the culprit for furnace ignition failure.
A furnace ignitor replacement costs $100 to $250 on average. Most universal hot-surface ignitor prices are $15 to $35 for the part alone. Gas furnace ignitor prices are $20 to $100 for parts from the original manufacturer (OEM). The labor cost to replace a heater ignitor is $80 to $200.
In short, yes, you can DIY a hot-surface ignitor replacement. It shouldn't be too difficult if you have experience fixing things around the house. However, if you typically feel clueless about troubleshooting household appliances, this may not be the right job for you.
Remove the ignitor carefully by holding only the base. Avoid touching the ignitor surface with bare hands. Use compressed air to remove carbon deposits. Gently wipe the surface with a soft cloth or scuff pad until shiny.
Defective Igniter or Pilot Light
If it clicks but your furnace won't ignite after the combustion cycle, the electronic ignition systems probably need to be replaced. In cases where the furnace ignition starts normally but only stays on for a few minutes and then goes out, a new pilot light likely needs to be installed.
The Average Furnace Lifespan
A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.
You can reset the ignition on your furnace simply. To do this you must cut the power to the furnace first by turning off the circuit that powers it. Once the power is off you can remove the burner door to reveal the ignitor. Turn this to “off” and leave it off for at least 5 minutes.
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.
A multimeter can be used to help determine if a glow-bar style furnace igniter has sufficient electrical continuity – a continuous electrical path present in the part – for the igniter to function properly.
Unplug the ignitor, and pull it out of your furnace. Leave it out for about five minutes, and test it using a multimeter to make sure it has continuity. After five minutes, plug the ignitor back in and turn the power to the furnace back on. If you still have an issue, call in a furnace repair technician.
One of the most obvious signs of a faulty ignitor is a furnace that's not heating or suddenly stops blowing warm air. If your thermostat setting is correct but your home remains cold, the ignitor might be to blame. You may notice that the furnace blower is running, but no warm air is coming from your vents.
The hot surface igniters that start the flame in a gas furnace often fail. It's almost as common as replacing a capacitor in air conditioning systems all over the city every spring.
Costs can vary depending on the model of both the furnace and the electronic ignitor. With parts and labor, homeowners can expect to spend an average of $100 to $350 on replacement costs.
If there is a strong draft in your basement or attic, or if you are experiencing high winds, the pilot light may not light. In addition, if your furnace has a draft motor or blower that is malfunctioning or dead, the pilot won't light. The purpose of the draft motor is to pull air into and out of your chimney or vent.
First, confirm the switch is in the "on" position, and if it is, see if your furnace starts up. If the switch is flipped down in the "Off" position, then your furnace will not turn on. If your heating system still does not start up, it might be due to a blown furnace fuse or tripped circuit breaker.
Take an old part, as well as its mounting holes and electrical connector, with you. This part should cost between $25 and $50, which is still much less than a maintenance contract. We can agree that a furnace ignitor replacement is a tricky task and can take up an entire day if you are a novice.
A gas oven igniter replacement costs $150 to $325 on average, depending on the brand and model. A new oven igniter costs $20 to $50 for the part alone. A broken igniter results in the oven not heating, clicking noises without lighting the gas, and gas leaks.
Reset The Furnace Ignitor
Find the burner door on the furnace and look behind it to find the ignitor. Turn it to “OFF” and wait for five minutes. After you wait, turn it back on and return the door to the burner. It is important to make sure the switch on the door is properly engaged.
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