Restoring a Furnace That Wont Stay Lit

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

Newer models don’t depend on pilot lights to keep the furnace going. Instead, they utilize electronic ignition. If this ignition is damaged, the burners can’t function like they are supposed to.

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

  • The thermostat tells your furnace to run.
  • Your furnace’s draft inducer fan starts to draw fresh air into your furnace.
  • The gas valve opens to send gas into the pilot burner.
  • An electronic spark ignites the pilot light.
  • The flame sensor tells your furnace that the pilot has been ignited.
  • The gas valve sends gas to the central burners, which are lit by the pilot light.
  • Your furnace then sends warm air across your house via ductwork.

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

Some of these issues can be resolved on their own, but others need professional help. When you need the top furnace repair in Denver, contact our heat Experts at 303-647-5853. We work with all brands and our services are backed by a 100% Satisfaction Guarantee for a year.*

Here are a few of the top reasons why your heater isn’t staying lit and what to do about it.

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 faulty, it may work erratically or not at all. Even if the sensor is running like it should, misaligned positioning leaves it unable to sense the flame to begin with. While you can start troubleshooting and cleaning this sensor right away, trusting a professional like Service Experts Heating & Air Conditioning will make sure the problem is resolved promptly and correctly.

2. Furnace is Too Hot

Your furnace utilizes built-in safety procedures that force a shutdown if it gets especially hot. One of the most frequent causes is a filthy filter. We encourage inspecting your air filter each month. If you can’t see light through it, change it.

3. Thermostat is Malfunctioning

Your thermostat tells your furnace when it is time to heat your residence. When it’s not functioning normally, your furnace will have trouble keeping your house warm. This can be a battery or electrical problem, depending on what kind of thermostat you own. We recommend reviewing your owner’s manual or manufacturer’s website for required troubleshooting instructions. If you still can’t get yours working, contact our Experts at 303-647-5853. We’ll identify the problem swiftly and can replace your thermostat, if necessary.

Some of these issues, such as a dirty flame sensor or an overheated furnace, are due to a lack of routine furnace maintenance. It’s crucial to have this service performed once a year, because it could help prevent breakdowns, enhance your furnace’s energy efficiency and might even make it last longer.

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

Eventually, your furnace won’t work like it used to regardless of attempts to repair or maintain it. When the time comes, consider Service Experts Heating & Air Conditioning and our excellent furnace replacement in Denver. We partner with some of the number one furnace brands, such as Lennox®, to offer you affordable, energy-efficient heating equipment.

When you’re looking into 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 be given a new furnace for just one affordable monthly fee. There’s no down payment or installation costs, and you get to pocket any beneficial rebates.

What’s even better is that Advantage members don’t pay a dime for repairs** or maintenance. If you have a disaster, you’re supported with 24/7 priority service. You’ll also receive discounts, no hidden charges and several other benefits.

Don’t put up with interruptions to your comfort for a moment longer. Give Service Experts Heating & Air Conditioning a call at 303-647-5853 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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