3 Reasons Why Your Furnace Isn’t Staying Lit and How to Repair It

A damaged furnace is exhausting to deal with. There are several reasons this might happen, but one of the most common is an issue with the burners or relevant parts. 

Newer systems don’t rely on pilot lights to keep the furnace lit. Instead, they utilize electronic ignition. If this ignition is damaged, the burners won’t perform like they do normally. 

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

  • The thermostat directs your furnace to turn on. 
  • Your furnace’s draft inducer fan begins to spin in order to bring fresh air toward your furnace. 
  • The gas valve opens to send gas into the pilot burner. 
  • An electronic spark lights the pilot light. 
  • The flame sensor informs your furnace that the pilot is burning. 
  • The gas valve sends gas to the principal burners, which are lit by the pilot light. 
  • Your furnace then pushes warm air into your residence via ductwork. 

If something fails during this procedure, your furnace will shut down for safety reasons. Or it might shut down a few minutes into heating because it’s overheating. 

Some of these issues can be resolved on their own, but others need professional servicing. When you want the best furnace repair in the U.S., contact our heating Experts at 866-397-3787. We work with all brands and our services are supported by a 100% Satisfaction Guarantee for a year.* 

Here are several of the main 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 tells your furnace when gas is ignited. If the sensor is dirty or damaged, it could work erratically or not at all. Even if the sensor is operating normally, misaligned positioning leaves it unable to identify the flame at all. While you can start troubleshooting and cleaning this sensor by yourself, calling an expert like Service Experts Heating, Air Conditioning & Plumbing will make sure the problem is fixed quickly and correctly. 

2. Furnace is Too Hot 

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

3. Thermostat Malfunction 

Your thermostat informs your furnace when it should heat your house. When it’s not running correctly, your furnace will have trouble keeping your home warm. This can be a battery or electrical issue, depending on what model of thermostat you have. We suggest referring to your owner’s manual or manufacturer’s website for useful troubleshooting details. If you still can’t get yours working, call our Experts at 866-397-3787. We’ll find the problem promptly and can replace your thermostat, if that is required. 

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

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

Inevitably, your furnace won’t work like it used to despite attempts to repair or maintain it. When the time comes, consider Service Experts Heating, Air Conditioning & Plumbing and our quality furnace replacement in the U.S.. We offer some of the best furnace brands, including Lennox®, to offer you affordable, energy-efficient heating options. 

When you’re thinking about replacing your furnace, consider signing up for our Advantage Program™. Getting 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 expenses, and you get to keep any beneficial rebates. 

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

Don’t worry about interruptions to your comfort for a moment longer. Give Service Experts Heating, Air Conditioning & Plumbing a call at 866-397-3787 to arrange an appointment today. Whether you need 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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