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Why Does My Furnace Keep Shutting Off?

Checking furnace
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What is more annoying than having your furnace shut off in the middle of a cold winter night? If this is something you've experienced before, know that you're not alone, as this is a common problem that these appliances can encounter when not correctly maintained. Luckily, the team at Peel Heating is here to assist you in identifying and resolving the common root causes of this problem.

Get 24/7/365 Expert in Furnaces

At Peel Heating, we put our customers first, which is why we're happy to accommodate your busy day-to-day schedules by making ourselves available when you need us. That's right—our certified HVAC technicians are available 24/7/365 days a year, including after-hours, weekends, and holidays, at no additional cost for all repair and maintenance services!

Peel Heating proudly operates throughout Mississauga, Brampton, Oakville, Port Credit, Orangeville, Georgetown, Caledon, and the surrounding areas!

If your furnace keeps shutting off at random times throughout the day, don't hesitate to give our team a call to book a repair appointment or use our online booking form! 

Why Does My Furnace Turn off After a Few Minutes?

If your furnace stops working after a short while, there's likely an underlying issue that has to be diagnosed and fixed by a professional HVAC technician.

These include things like: 

  • Malfunctioning mechanical parts
  • Clogged air filters
  • Malfunctions with your thermostat

Therefore, it’s recommended that you get your furnace unit inspected by a certified HVAC technician as soon as possible rather than trying to diagnose and fix the problem yourself. Prompt repairs are key to minimizing damage to your system. So, when the first signs of an issue appear, reach out to a technician immediately. They'll be able to precisely identify the root cause of the issue and implement the required fixes to guarantee that your furnace continues to work effectively and dependably in the future. 

Is It Normal for My Furnace to Make a Weird Sound and Then Turn Off?

While some noises produced during the heating process are harmless, some could be warning signs of issues.

Let’s take a closer look:

  • When gas builds up before igniting, what's known as delayed ignition may cause loud banging or popping sounds. This problem can be dangerous and needs to be repaired right away. 
  • High-pitched shrieking or squealing noises could be a sign of a blower motor or belt issue. A broken blower might lead to overheating, which will force the furnace to turn off for safety.
  • A booming or rumbling noise could be a sign of a burner problem or a delayed ignition. To avoid any safety issues, a professional must inspect your furnace as soon as possible. 
  • Noises that hiss or whistles could be caused by ducting problems or air leaks. Leaks have the potential to reduce system performance and cause shutdowns.
  • Sounds coming from the furnace, such as rattling or vibration, could be a sign of broken or loose parts.

If strange noises are coming from your furnace and then it shuts off on its own, reach out to a professional quickly. Ignoring these sounds may cause more serious issues as well as possible safety risks. 

What causes a furnace to shut off before reaching temperature?

 A furnace might turn off ahead of it, achieving the desired temperature for a variety of reasons, leaving you unhappy and chilly.

Here is a closer look at some of the causes of this issue:

  • Furnaces that are not set correctly on the thermostat may shut off early. The heating system may cycle on and off if the thermostat is set too close to the desired temperature.
  • The flow of air will be restricted by dirty or clogged filters, which will lead to the furnace overheating. In turn, this triggers a safety feature that turns off the furnace to prevent additional harm. Regularly cleaning or changing the air filters is essential.
  • A dirty or malfunctioning flame sensor could cause the furnace to shut off as a preventative step by incorrectly detecting the burner's flame. The flame sensor can be cleaned or replaced to resolve this issue.
  • Other possible causes of furnace shutdowns include problems with the gas or electrical supply. Verify whether there are any issues with your gas or energy supply.
  • An improperly sized furnace for your home can cycle on and off too quickly.

If your furnace is turning off before it reaches the temperature you have set on your thermostat, reach out to a professional HVAC company as soon as possible to have it repaired. 

Do I Need a Professional if My Furnace Keeps Shutting Off?

 Yes, if your furnace is turning off frequently, you should call in a professional HVAC technician. Furnace problems involve complex components that could be potentially hazardous. However, experts are equipped with the knowledge, skills, and diagnostic equipment needed to locate and resolve the underlying cause of recurrent shutdowns.

 Fixing complicated furnace issues on your own without the necessary knowledge can result in additional harm and safety risks. Additionally, if your home's furnace is still under warranty, you will need to have it repaired by a professional to keep the guarantee valid.

 If the furnace in your home is constantly turning off throughout the day, don't hesitate to reach out to the professional HVAC technicians at Peel Heating for assistance! We recognize that regular short cycles can lead to reduced comfort, increased energy costs, and more substantial deterioration of your home's furnace. This is why our team of certified HVAC technicians is available for all furnace repair and maintenance appointments 24/7/365 days a year, including after-hours, weekends, and holidays, at no extra cost!

You can book your appointment with us over the phone or by using our online booking form. We look forward to partnering with you!

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