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Top Reasons Why a Furnace Won’t Fire Up

Apr 21

Furnaces are important to keep your home warm, especially during the winter season. They are great in ensuring that your home has consistent air circulation to keep you warm and comfortable. 

However, there are instances wherein the furnace won’t produce warm air. If you believe it stops working, it may be one of these reasons:


Filter is Not Clean

The filter of the furnace prevents small debris from getting mixed up with the air that comes out of it. Because of this, the debris accumulates and it results in low register. A clogged filter can block proper air flow. Before calling for repair for your furnace Gonzales LA check all of the air registers and make sure that they are not obstructed. 


Faulty Ignitor

Usually, the furnace receives a signal from the thermostat when it is time to heat up, the ignitor gets hot and it starts the process of igniting the gas and blowing warm air.

 If your furnace does not fire up even after it initiates the start cycle, it is possible that there is something wrong with its ignitor or sensor. A faulty or dirty ignitor is one of the most common furnace problems. 

An expert technician will check the error codes in the user manual to ensure that the problem isn't deeper than it is. However, if you wish to do some troubleshooting before picking up the phone to call a professional in furnace Gonzales, LA you can turn off the power to the furnace and the gas. Check the ignitor to see if it needs cleaning. 

If it does, remove it using a screwdriver. Rub some medium grain sandpaper on the ignitor but be careful as you might accidentally break something, which will result in more damage. Return the ignitor, bolt it shut, turn on the gas and try heating it up again. If that won't do the trick, then it is time to give a professional a call. 

The Thermostat is Not On

Since the furnace only ignites when the thermostat reads that the room is too cold, it is important to check the thermostat if the furnace won't work. Make sure that it is set above the room temperature and the system switch is either in HEAT position or AUTO mode. 

You will see a fan switch, and it should be set to ON so that the warm air will flow continuously. You can also set it to AUTO if you want the blow motor to work only while the furnace is on. If the furnace won't blow warm air, raise the thermostat to its highest temperature setting to see if it will solve the problem. 


The Furnace is Not On

Sometimes, the solution to the problem is simple. If your furnace is not working, you can check the fuse at the electrical panel to make sure that the breaker is in the right position. You will see the power switch for the furnace right next to the breaker, so ensure that it is in the "On" position. 

If the furnace is on and it won't work, you can call an expert in furnace Gonzales LA expert to sort everything out for you.


Is It Time to Call an HVAC Technician?

If you’ve tried everything that you can and your furnace still won’t produce the warm air that you need, it is best to call a pro to handle your furnace Gonzales LA so you can go back to having a comfortable and cozy room. 

Fire and Ice Heating & Air LLC provides all of the services that you need to keep your furnace in great shape. Contact them and let their team of certified technicians handle everything for you.