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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:
Jul 23, 2024
Twintech Heating & Cooling installed my furnace in 2022 and in fall of 2023 installed my Panasonic Heat Pump. Greg and Mitch did a great job. Helped me through the rebate process. Super happy with the Heat Pump. Only used my furnace 5 times this winter. Energy bills lower, carbon emissions lower.Thank you Twintech. I recommend highly!
Jul 18, 2024
Just had a new furnace installed by Twintech. I cant express how great these guys are at what they do. From the sales to installation they were professional all the way. Very reasonable pricing and courteous during the installation and willing to answer any questions I had. Highly recommended !!!
Jul 17, 2024
They've cleaned my furnace a couple of times and mentioned that the hot water tank standards were going to change soon so I decided to change mine out.
There were a few challenges during the process but the installers handled the problems without missing a stride! I now have really hot water again!
Jul 16, 2024
Highly recommend Twintech Heating company, we got honest and detailed information on what was needed to replace and install a new gas furnace. Bob and Greg made us feel comfortable withe process through their thorough explanation and knowledge of the right furnace for our needs. The professionalism and courteous friendly attitude towards the customer is what we liked the most as they treated us like family. So happy with our decision and new furnace we will be looking into get our rental water heater replaced and installed by Twintech team. We feel better having their knowledge on our side and will only trust them with any further maintenance of furnace.
Jul 15, 2024
Customer service and knowledge is priority in this industry, and Twintech has it. I've dealt with their team for maintenance and a furnace replacement. They're accommodating and make great recommendations, and came through at a great price over the big guys in the industry. They'll be my next call when I need service or maintenance.
Jul 14, 2024
I decided that the noises and age of the existing furnace which was old and not very efficient to replace it. Gave Greg a call and Grant and Greg got to work on it. Because of supply issues with the current heating type that would be an easier install Greg convinced me to change the location of the system and it would provide me better service for heat and efficiency. I had skeptical but went ahead anyway putting trust in Greg And Grant. Greg, Grant and Mitch came through and in 2 days had completely relocated my heating and A/C system. I can honestly say Greg was right my old house has been warmer and more evenly heated as it ever was. For anyone reading this rather long winded review can take my word for it, Twin Tech can take care of your needs.
Jul 13, 2024
I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!
Jan 4, 2023
Great Team! Furnace broke in the weekend, Bob visited same day and Greg installed new one on Monday. Team was professional, respectful and knowledgeable. Installation went very well, Greg found solutions to challenges, like hiding new conduits in the ceiling. Looks nice and new furnace is working great. Five Stars.
Jan 4, 2023
I used Twintech to install a new furnace for my home. Bob was terrific in explaining the sizing options and why the 2 stage furnace was the best option for me. Greg did a great job installing, clean and on time. Finished work looks great but the best part is how it works. The 2 stage heating is so much more comfortable. I run the fan continuously to keep the indoor air clean. Great investment! Would highly recommendTwintech!
Jan 4, 2023
Im going to start this by saying Im a very particular customer. My background is in mathematics and mechanical engineering so I have an eye for detail and a respect for technical knowledge.
Greg had already done an AC inspection and replaced a water heater tank and there was no question in my mind who to deal with replacing my rickety old furnace after it got pooched.
Bob dropped in ahead of time and clearly (and knowledgeably) outlined all technical, price and operational options.
Greg showed up on time, on the agreed date and did a fantastic job. (The OLD furnace was a house of horrors and was installed in a keystone cops sort of way- careless.)
The work Greg did was HIGHLY PROFESSIONAL and FAR MORE FUNCTIONAL than what I had.
Im also a musician with many instruments so maintaining predictable humidity/temperature is extremely important to me. Greg recognized this as did Bob. You NEVER feel like youre being brushed off.
In summary, if youre looking for PROFESSIONAL, QUALITY results by an EXPERIENCED, THOUGHTFUL team
(that also happen to be FRIENDLY and ATTENTIVE ) then youve come to the right page!!
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