How to Fix a Furnace That Wont Stay Lit

A faulty furnace is tedious to put up with. There are multiple reasons this may happen, but one of the most likely is something wrong with the burners or relevant parts.

Newer furnaces don’t depend on pilot lights to keep the furnace ignited. Instead, they work via electronic ignition. If this ignition fails, the burners will not work like they do normally.

When your gas furnace is performing correctly, here’s how it should operate:

  • 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 move gas into the pilot burner.
  • An electronic spark starts the pilot light.
  • The flame sensor tells your furnace that the pilot is burning.
  • The gas valve transports gas to the central burners, which are lit by the pilot light.
  • Your furnace then pushes warm air into your house via ductwork.

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

A number of of these malfunctions can be fixed on their own, but others require professional assistance. When you need the best furnace repair in London, contact our heating Experts at 226-270-1164. We work with all brands and our service is supported by a 100% Satisfaction Guarantee for a year.*

Here are several of the typical reasons why your heating isn’t staying lit and what to do moving forward.

1. Faulty Flame Sensor

Your furnace’s flame sensor is a safety system that informs your furnace when gas is ignited. If the sensor is dirty or malfunctioning, it could work inconsistently or not at all. Even if the sensor is functioning normally, misaligned positioning leaves it unable to sense the flame entirely. While you can start troubleshooting and cleaning this sensor on your own, contacting a professional like Roy Inch & Sons Home Services by Enercare will make sure the problem is fixed swiftly and correctly.

2. Furnace is Too Warm

Your furnace contains built-in safety functions that shut it off if it gets especially hot. One of the most frequent causes is a clogged filter. We encourage inspecting your air filter monthly. If you can’t see light through it, change it.

3. Thermostat is Malfunctioning

Your thermostat directs your furnace when it needs to heat your house. When it’s not operating normally, your furnace will require more energy to keep your residence warm. This can be a battery or electrical problem, depending on what type of thermostat you use. We recommend opening your owner’s manual or manufacturer’s website for needed troubleshooting instructions. If you still can’t get yours working, get in touch with our Experts at 226-270-1164. We’ll identify the problem quickly and can replace your thermostat, if that is required.

Some of these issues, like a dirty flame sensor or an overheated furnace, are due to a lack of routine furnace maintenance. It’s important to have this service completed once a year, because it can help minimize breakdowns, boost your furnace’s energy efficiency and could even make it survive longer.

We Have You Protected When It’s Time for Furnace Replacement

Sooner or later, your furnace can’t work like it’s supposed to regardless of attempts to repair or maintain it. When the time comes, reach out to Roy Inch & Sons Home Services by Enercare and our professional furnace replacement in London. We offer some of the best furnace brands, such as Lennox®, to offer you affordable, energy-efficient heating systems.

When you’re contemplating replacing your furnace, consider enrolling in our Advantage Program™. Buying a new furnace can run thousands of dollars out of pocket. As an Advantage member, you’ll get a new furnace for just one affordable monthly fee. There’s no down payment or installation costs, and you get to hold on to 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 guaranteed a fast response with 24/7 priority service. You’ll also enjoy discounts, no sneaky charges and lots of other benefits.

Don’t put up with interruptions to your comfort for a minute longer. Give Roy Inch & Sons Home Services by Enercare a call at 226-270-1164 to request an appointment today. Whether you want 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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