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3 Explanations Why Your Furnace Isnt Staying Lit and How to Repair It

A malfunctioning furnace is frustrating to put up with. There are lots of reasons this may happen, but one of the most frequent is something wrong with the burners or related parts.

Newer models don’t require pilot lights to keep the furnace going. Instead, they use electronic ignition. If this ignition malfunctions, the burners can’t work like they should.

When your gas furnace is running correctly, here’s how it should work:

  • The thermostat directs your furnace to run.
  • Your furnace’s draft inducer fan turns on to pull fresh air through your furnace.
  • The gas valve opens to direct gas into the pilot burner.
  • An electronic spark starts the pilot light.
  • The flame sensor directs your furnace that the pilot has been lit.
  • The gas valve sends gas to the central burners, which are lit by the pilot light.
  • Your furnace then pushes warm air into your home via ductwork.

If something goes wrong during this process, your furnace will shut down for safety concerns. Or it might shut down a few minutes into heating because it’s overheating.

Some of these problems can be repaired on their own, but others are best handled by professional assistance. When you want the best furnace repair in Oakville, call our heat Experts at 289-813-5566. We have experience with all brands and our work is supported by a 100% Satisfaction Guarantee for a year.*

Here are some of the typical reasons why your heating isn’t staying lit and what to do about it.

1. Dirty Flame Sensor

Your furnace’s flame sensor is a safety system that tells your furnace when gas is ignited. If the sensor is dirty or damaged, it might work intermittently or not at all. Even if the sensor is operating normally, incorrect positioning leaves it unable to identify the flame entirely. While you can attempt troubleshooting and cleaning this sensor right away, hiring a pro like Abbey Air Service Experts will guarantee the problem is fixed quickly and correctly.

2. Overheated Furnace

Your furnace has built-in safety features that deactivates your furnace if it gets too hot. One of the most common causes is a clogged filter. We suggest evaluating your air filter each month. If you can’t see light through it, change it.

3. Thermostat is Malfunctioning

Your thermostat directs your furnace when it should heat your home. When it’s not running properly, your furnace will have trouble keeping your home warm. This can be a battery or electrical issue, depending on what model of thermostat you own. We recommend referring to your owner’s manual or manufacturer’s website for needed troubleshooting info. If you still can’t get yours working, get in touch with our Experts at 289-813-5566. We’ll discover the cause promptly and can replace your thermostat, if necessary.

A number of these issues, such as a dirty flame sensor or an overheated furnace, are caused by a lack of consistent furnace maintenance. It’s important to have this service done once a year, because it may help reduce breakdowns, enhance your furnace’s energy efficiency and can even make it live longer.

We Have You In Good Hands When It’s Time for Furnace Replacement

Eventually, your furnace won’t work like it used to in spite of attempts to repair or maintain it. When the time comes, reach out to Abbey Air Service Experts and our excellent furnace replacement in Oakville. We work with some of the top furnace brands, like Lennox®, to offer you affordable, energy-efficient heating systems.

When you’re considering replacing your furnace, consider signing up for our Advantage Program™. Buying a new furnace can cost you thousands of dollars out of pocket. As an Advantage member, you’ll receive a new furnace for just one small monthly fee. There’s no down payment or installation costs, and you get to pocket any valuable rebates.

What’s even better is that Advantage members don’t pay a cent for repairs** or maintenance. If you have a disaster, you’re protected with 24/7 priority service. You’ll also enjoy discounts, no last-minute charges and many other benefits.

Don’t fret about interruptions to your comfort for a minute longer. Give Abbey Air Service Experts a call at 289-813-5566 to arrange an appointment right away. Whether you are looking for repairs or if it’s time for a new furnace, we guarantee your satisfaction.


*Not applicable to the Advantage Program. See your signed Advantage Program agreement for full details and exclusions. 100% Satisfaction Guarantee is subject to certain restrictions and limitations as set forth in the applicable Terms and Conditions. **See your signed Advantage Agreement for details.

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