If your furnace won't stay lit, it becomes the only thing you can think about. The first thing you should do is check the filter. A dirty filter can cause the furnace to overheat. If the filter is dirty, replace it and see if that fixes the problem. If the filter is not the problem, there are a few things you can do to try to fix it. If those don't work, you may need to call a technician. There could be something wrong with the furnace itself. The technician will be able to tell you what is wrong and how to fix it. Keep reading to learn more.

What do you do if your furnace won't stay lit?


If your furnace is not staying lit, there are a few things you can do to troubleshoot and fix the problem. First, check to make sure that the furnace switch is turned on. If it is, try turning off the power to the furnace at the breaker box and then turning it back on. If that doesn't work, check if dust or dirt is blocking the air intake or exhaust vents. If there is, clean them out.

Why is it important to check the furnace igniter?

If your furnace will not stay lit, one of the first things you should check is the furnace igniter. The igniter is the part of the furnace that ignites the gas, and if it's not working correctly, the furnace isn't going to stay lit.

To check the igniter, turn off the furnace and disconnect the power to it. Then, remove the front cover of the furnace. You should see the igniter near the bottom of the furnace.

To test the igniter, use a screwdriver to touch the two terminals on the igniter. If the furnace igniter is working properly, you should hear a clicking noise. If you do not hear a clicking noise, the igniter is not working properly, and you will need to replace it.

How do you replace the ignitor assembly?

The ignitor assembly is responsible for igniting the fuel in the furnace; if it's not working properly, the furnace will not stay lit. You can replace the ignitor assembly by following these steps:

  • Turn off the power to the furnace at the breaker box.
  • Remove the front cover of the furnace.
  • Locate the ignitor assembly and remove it from the furnace.
  • Install a new ignitor assembly and reattach the wires.
  • Replace the front cover of the furnace and turn on the power to test it out.

Make sure no snow or ice is blocking the intake or exhaust pipe.

Another reason your furnace may not stay lit is that snow or ice could block the intake or exhaust pipe. If this is the case, the furnace will not be able to get enough air to ignite and will turn off. To fix this, remove any snow or ice from the pipe and try turning on the furnace again.

How do you clean the furnace fan blades?


Before attempting to clean the furnace fan blades, be sure to turn off the power to the furnace at the breaker box. Then, using a vacuum cleaner with an attachment hose, clean around the fan blades and housing unit to remove any dirt or debris that might be causing blockage and preventing airflow. Be careful not to touch the fan blades as they may be hot. Once you have cleaned all of the debris away, turn on the power to the furnace and test it again. If it still does not stay lit, there may be something wrong with your furnace and you should call a technician for assistance.

It's important to fix a furnace that will not stay lit. Along with being inconvenient and uncomfortable, it can also be dangerous. By following the steps in this article, you should be able to fix the problem and have your furnace running smoothly again. If your furnace still won't stay lit, it's best to contact a furnace professional.