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Ignition Issues With Your Furnace
Posted On: October 11, 2024
If your furnace isn’t turning on or staying lit, it may be experiencing ignition problems. Ignition issues can be frustrating, especially during colder months when you rely on your heating system to function properly. Understanding the possible causes can help you identify and solve the problem before calling in a professional. Here's a guide to common furnace ignition issues and potential solutions.
Common Causes of Furnace Ignition Problems
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Pilot Light Issues: Older furnaces typically use a pilot light for ignition. If the pilot light is out, the furnace won’t ignite. This can be due to a draft, a dirty pilot light, or a malfunctioning thermocouple.
Solution: If the pilot light is out, try relighting it according to the manufacturer’s instructions. If it won’t stay lit, check for drafts or clean the pilot light assembly. You may also need to replace the thermocouple, which detects whether the pilot light is on.
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Faulty Ignition Sensor: For newer furnaces with electronic ignition, the ignition sensor can sometimes malfunction. Over time, dirt and grime can accumulate on the sensor, causing it to fail in detecting the flame.
Solution: Cleaning the ignition sensor often resolves this issue. Turn off the furnace, remove the sensor, clean it with fine sandpaper or a brush, and reinstall it.
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Ignitor Failure: Furnaces equipped with hot surface ignitors rely on a small electrical component to create heat for ignition. If the ignitor fails, the furnace won’t start.
Solution: Ignitors can wear out over time, and a replacement is usually necessary. This part is fragile, so it's best to have a professional technician handle the replacement.
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Gas Supply Issues: If your furnace isn't getting enough gas, it won’t ignite. This could be due to a closed gas valve, low gas pressure, or an issue with the gas line.
Solution: Ensure that the gas valve is open and check your home's gas supply. If the issue persists, contact your gas company or a technician to inspect the gas lines.
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Dirty Burners: Over time, the burners in your furnace can become clogged with dust and debris. Dirty burners can prevent proper ignition and cause the furnace to operate inefficiently.
Solution: Cleaning the burners can restore normal operation. This task is often best left to a professional, as improper cleaning can damage the components.
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Blocked Air Intake or Exhaust: Modern furnaces have a safety feature that prevents ignition if the air intake or exhaust vent is blocked. This is a safety precaution to avoid dangerous gases from building up.
Solution: Check that the vents are clear of obstructions like leaves, snow, or debris. Clearing these blockages should allow the furnace to ignite properly.
When to Call a Professional
While some furnace ignition issues can be resolved with basic troubleshooting, others require the expertise of an HVAC professional. If you're unsure or uncomfortable handling any components, it's best to contact a certified technician to ensure safety and proper repairs. Regular maintenance can also help prevent ignition problems, keeping your furnace running smoothly throughout the winter.
By addressing furnace ignition issues early, you can avoid more significant problems and ensure your home stays warm and comfortable.
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See What Our Customers Are Saying:
Feb 1, 2021
Dave was very pleasant to deal with and Twintech responded quickly when our furnace needed to be replaced ASAP. Installation was done on time and the crew were neat and tidy. We now have a great furnace that suits the needs of our family.
Feb 1, 2021
When your furnace kicks in over the holidays and you're not sure where to turn.. I'm so thankful that this company returned my phone call. I appreciated their transparency and clarity which allowed me to make an informed decision. With various quotes thrown at you, it can be difficult to make the right decision and trust the solutions offered by different companies. TwinTech spoke the truth and delivered on their word. Neat, timely and clean service; the peace of mind I needed during a very cold holiday season. I highly recommend them!
Feb 1, 2021
Pulling a old unit out and installing a modern heating system! Required drilling holes in the wall for the newer pipes. We went from 70% (I am willing to bet it was far less due to lack of maintenance and just old) to 96% newer . It now feels warmer and more pressure and we use to run extra heaters and feel as though they are not necessary!
Feb 1, 2021
I received three quotes before deciding to choose Twintech. Dave's prices was much more reasonable than the competitors. I most appreciated their honest recommendations. Others tried to oversell their products and services. Thank you Dave!
Feb 1, 2021
They had the best price and did a great job on the installation. Recommend them to anyone.
Feb 1, 2021
It was a amazing and professional high quality job
Friendly and very helpful representatives
Thank you for understanding my concern
And explain very well
Overall we pleased with your service
Tanks
May 15, 2020
My 19 year old furnace stopped working when the cold weather hit in November, and I was left without heat. I interviewed several companies and found TWINTECH HEATING and COOLING to be very knowledgeable, quick to respond to my inquiries and very competitively priced.
Dave provided all of the information and pricing ahead of time and set up the appointment for the installation. Greg and Mitch arrived on time to do the installation and worked quickly and efficiently to complete the job.
After the completion of the installation, Dave followed up to ensure that everything was working well and that I didn't have any concerns.
Overall, this was a low-stress and flawless experience from start to finish. I would highly recommend TWINTECH HEATING and COOLING to anyone that requires a new furnace.
May 14, 2020
Our 20 year old furnace broke down during the first cold weekend this past November and our usual HVAC company never returned our phone call. Their loss, missing out on a sale since we didn't want to spend much fixing an old furnace and our 40 year old air conditioner was also long overdue for replacement. We proceeded in obtaining three different quotes for furnace and air conditioner replacement, and proceeded with the one we received from Twintech.
Dave was friendly, knowledgable and accommodating to our schedule and provided with us with a price that fell in the middle of the three quotes that we had. We felt that the Amana furnace and air conditioner he quoted us on were the best products and value offered to us and felt most comfortable with the professionalism and reputation of Twintech.
Greg, Grant and Mitch were at our house for installation the day after we decided to proceed. The guys were friendly and informative, the job was completed efficiently and workmanship appears excellent. Our house is certainly much more comfortable with the new two-stage variable speed Amana furnace compared to the old clunker! And, we're looking forward to enjoying the new air conditioner once summer rolls around again. Thanks Twintech!
May 13, 2020
We are very happy with our new furnace. The service was excellent the guys worked 6 hours straight through and there was no mess at all they took the old furnace boxs etc with them they then explained everything to us they were very helpful and pleasant , when we need a new air conditioner we know who to call!
May 12, 2020
The crew from sales to installation was very professional and had great attention to detail
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