How to Fix a Furnace That Wont Stay Lit

A malfunctioning furnace is frustrating to handle. There are multiple reasons this can happen, but one of the most likely is an issue with the burners or related systems.

Newer furnaces don’t depend on pilot lights to keep the furnace lit. Instead, they work via electronic ignition. If this ignition fails, the burners won’t function like they are supposed to.

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

  • The thermostat tells your furnace to run.
  • Your furnace’s draft inducer fan starts to bring fresh air toward your furnace.
  • The gas valve opens to direct gas into the pilot burner.
  • An electronic spark ignites the pilot light.
  • The flame sensor directs your furnace that the pilot has been lit.
  • The gas valve transports gas to the central burners, which are lit by the pilot light.
  • Your furnace then moves warm air across your home via ductwork.

If something goes wrong during this procedure, your furnace will turn off for safety reasons. Or it might stop a few minutes into heating because it’s overheating.

Several of these problems can be handled on their own, but others require professional servicing. When you need the fastest furnace repair in the Wasatch Front region, contact our heating Experts at 801-436-8985. We service all brands and our work is backed by a 100% Satisfaction Guarantee for a year.*

Here are a number of the most common 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 informs your furnace when gas is ignited. If the sensor is dirty or faulty, it may work inconsistently or not at all. Even if the sensor is running like it should, incorrect positioning leaves it unable to recognize the flame to begin with. While you could start troubleshooting and cleaning this sensor on your own, trusting a professional like Barlow Service Experts will make sure the problem is taken care of promptly and correctly.

2. Furnace is Too Hot

Your furnace contains built-in safety procedures that deactivates your furnace if it gets dangerously hot. One of the most typical causes is a filthy filter. We encourage reviewing your air filter monthly. If you can’t see light through it, swap it out.

3. Thermostat is Malfunctioning

Your thermostat informs your furnace when it needs to heat your residence. When it’s not operating like it should, your furnace will struggle to keep your residence warm. This can be a battery or electrical problem, depending on what kind of thermostat you have. We recommend opening your owner’s manual or manufacturer’s website for required troubleshooting instructions. If you still can’t get yours working, reach out to our Experts at 801-436-8985. We’ll discover the problem swiftly and can replace your thermostat, if necessary.

A number of these issues, like a dirty flame sensor or an overheated furnace, are caused by a lack of proper furnace maintenance. It’s highly beneficial to have this service performed once a year, because it could help prevent breakdowns, boost your furnace’s energy efficiency and can even make it last longer.

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

Inevitably, your furnace won’t work like it used to in spite of attempts to repair or maintain it. When the time comes, consider Barlow Service Experts and our top-notch furnace replacement in the Wasatch Front region. We work with some of the best furnace brands, such as Lennox®, to offer you affordable, energy-efficient heating options.

When you’re looking into replacing your furnace, consider signing up for our Advantage Program™. Buying a new furnace can be thousands of dollars out of pocket. As an Advantage member, you’ll be given a new furnace for just one affordable monthly fee. There’s no down payment or installation charges, and you get to hold on to any beneficial 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 supported with 24/7 priority service. You’ll also receive discounts, no last-minute charges and several other benefits.

Don’t fret about interruptions to your comfort for a minute longer. Give Barlow Service Experts a call at 801-436-8985 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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