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What to Do When Your Furnace Unit Shuts Down
Posted On: September 30, 2024
If your furnace unexpectedly shuts down, it can be stressful, especially in cold weather. Before calling for professional help, here are a few steps you can take to troubleshoot the issue:
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Check the Thermostat
Ensure the thermostat is set to "heat" and the temperature is set above the room temperature. Sometimes, the settings can get changed accidentally, causing the furnace not to kick on.
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Inspect the Power
Verify that the furnace is receiving power. Check the circuit breaker and reset it if necessary. If the furnace is connected to a switch, ensure it’s turned on.
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Replace the Air Filter
A clogged air filter can cause your furnace to overheat and shut down. If the filter is dirty, replace it and see if that solves the issue.
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Examine the Pilot Light or Ignition
For older furnaces, check whether the pilot light is on. If it’s off, you may need to relight it. Newer models may have an electronic ignition, which should be inspected by a professional.
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Check the Furnace Door
Some furnaces won’t operate if the access door is not properly closed. Double-check that the door is securely shut.
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Inspect the Vents
Blocked vents can disrupt airflow, causing the furnace to shut down. Make sure all vents are open and unblocked.
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Examine the Flame Sensor
A dirty flame sensor can cause the furnace to shut off after lighting. If you're comfortable, you can clean it with a soft cloth, but calling a professional might be the best option.
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Reset the Furnace
Some furnaces have a reset button, typically located near the blower. Press it and wait a few minutes for the system to reboot.
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Call a Professional
If none of these steps solve the issue, it’s time to call an HVAC technician. They can diagnose and fix any deeper issues with the system.
Regular furnace maintenance can prevent sudden shutdowns, ensuring your unit operates efficiently throughout the winter months.
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See What Our Customers Are Saying:
Feb 18, 2025
Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.
Feb 18, 2025
We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!
Feb 18, 2025
TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!
Feb 18, 2025
Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!
Feb 18, 2025
Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.
Aug 17, 2024
I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. Ive used the company in the past for my furnace so I was happy when I recognized Greg at my front door. Hes great and the service is always top notch. Id highly recommend using twintech for honest, superior service in the Durham region. Thanks!
Aug 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!!
Aug 12, 2024
Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!
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 !!!
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