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Why is My Furnace Not Kicking On? Here are a Few of the Most Common Reasons

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Furnace Out of OrderHave you ever walked into your home on a freezing cold day, hoping to be greeted by the warm air from your furnace, only to realize that it's almost as cold inside as it is outside? During the winter months, there's nothing as frustrating as a furnace that won't turn on! We don't want to leave you out in the cold if this happens to you, so today we're going to help you figure out what to do by answering the question, "Why is my furnace not kicking on?"


Why is my furnace not kicking on?


There are many reasons why your furnace might not be kicking on. Some of the most common explanations include:



    • Blown fuse. Your furnace uses gas to produce heat, but it also uses electricity to blow air throughout your home. If the fuse to your furnace is blown, your system will not turn on. Check your circuit breaker and make sure that the switch for your furnace is in the "on" position.



    • Gas valve is turned off. The gas valve to your furnace might have been turned off as a safety precaution during summer. Check to make sure that it is in the "on" position so that your furnace will receive a supply of gas.



    • Overheating or malfunctioning part. Your furnace has many different components that all must work together in order to heat your home properly. If any of those components malfunction or overheat, they can cause a domino effect in your system that prevents it from turning on. Any problems with your furnace's parts should be taken care of by a professional furnace repair contractor like Jerry Kelly.
Why is my furnace not responding to the thermostat?

Your furnace may not be responding to the thermostat because: 

  • Your thermostat is malfunctioning.
  • The circuit to your furnace has tripped. 
  • The wiring to your thermostat is bad. 

If you try changing the temperature in your home with your thermostat and your furnace still does not respond after a few minutes, that typically indicates something is wrong with your thermostat or furnace. To get your furnace repaired, contact us today

Why does my furnace not come on sometimes?

Your furnace may not come on sometimes due to the following reasons: 

  • Your thermostat is set incorrectly. 
  • Your air filter is clogged or dirty. 
  • Your pilot light is out. 

To prevent your furnace from having difficulties, you should regularly replace your air filter and always ensure that you set your thermostat correctly. To find out more about getting your furnace repaired, call us today.

What to check if your furnace isn't working?

If your furnace isn't working you should check: 

  • Your furnace’s air filter. 
  • The setting on your thermostat. 
  • The circuit to your furnace. 

If you check all of these things on your furnace and everything looks as it should, then you may have a deeper issue with your furnace that needs to be addressed by an experienced HVAC technician. Give us a call today to get your furnace repaired

Are you in the St. Louis metro area?

If you have any questions about why your furnace isn't kicking on, or if you'd like a heating system repaired, serviced or installed in your home, contact Jerry Kelly, your St. Charles, MO, furnace installation and repair company. We provide service all over the St. Louis area, including towns like St. Peters, Town and Country and Weldon Spring, MO.


photo credit: Foomandoonian via photopin cc

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The Most Important Part of Our Company is Our Customers
Fantastic Job Alex J did a fantastic job installing and explaining our new heater. All of Kelly’s technicians have been extremely professional and knowledgeable. Ali 02/2021
I would highly recommend them Mike and Heath came out on a very cold Saturday and provided professional and friendly service. Resolved the problem so we could stay warm. I would highly recommend them. Brian 02/2021
Professional Service Thank you, Korey T., for restoring our heat! We appreciate your prompt and professional service! We have had a great experience with Jerry Kelly every time we have needed service. Summer 01/2021

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