Why is my furnace running but not blowing hot air? How do I fix my heater not blowing hot air? 


These are common questions we get here at advantaclean.com/ft-Lauderdale-fl/, and unfortunately, there isn’t always a straightforward answer. In this article, we’ll help you troubleshoot the problem so you can get your furnace back up and running as quickly as possible or contact your local trusted AC company to help you diagnose and fix it.


In the winter, the last thing you want is for your furnace to stop blowing hot air. A furnace that’s not blowing hot air can be a sign of several problems, some of which are easy to fix and some of which require the help of a professional. We’ll explore some of the most common reasons why your furnace might not be blowing hot air, so you can get it fixed and stay warm all winter long.


As we said, there are several reasons why your furnace might be running but not blowing hot air. One possibility is that the furnace is not getting enough power. This could be due to a tripped circuit breaker or a blown fuse. If this is the case, simply reset the breaker or replace the fuse and see if that does the trick.


Another possibility is that something is blocking the airflow from the furnace to the ductwork. This could be debris in the ductwork or a closed damper. If you suspect that something is blocking the airflow, you should contact a professional NADCA-certified air duct cleaning company like AdvantaClean of Fort Lauderdale to have it checked out and repaired.


The most common culprit is a dirty or clogged filter. A dirty filter restricts airflow and can cause your furnace to overheat. Additionally, a clogged filter can cause your furnace to run continuously without heating your home. If you suspect a dirty or clogged filter is the problem, replace it with a new one and see if that solves the issue.


Another reason why your furnace might not be blowing hot air is that the thermostat is set to “off” or “cool.” Be sure to check your thermostat and set it to “heat” if this is the case.


Yet another reason why your gas furnace might not be blowing hot air is that the pilot light has gone out. If this is the case, you can simply relight the pilot light following the instructions in your furnace’s owner’s manual, or these steps are widely described by manufacturers. First, locate the pilot light assembly on your furnace.


Once you’ve found it, turn off the gas valve to the pilot light assembly. Then, use a lighter or match to ignite the pilot light. Once it’s lit, turn on the gas valve and wait for the furnace to heat up. If relighting the pilot light doesn’t work, or if you can’t find the pilot light assembly, call a professional for help.


If you have an electrical furnace most likely the heater element is bad or some of the electronic/electric components need replacement, in this case, you will need a professional AC company to fix the issue.


A not-so-common reason for a furnace to stop blowing hot air is a faulty or damaged blower motor. The blower motor is responsible for circulating air through your furnace and into your home. If there’s a problem with the blower motor, it could prevent the furnace from blowing hot air. To check if the blower motor is working properly, first make sure that the power switch to your furnace is turned on. Then, check to see if any debris or dirt is preventing the blower wheel from turning freely. 


If there is debris or dirt, remove it and try turning on the furnace again. If it’s not working properly, the air will not be heated and circulated correctly. This problem will require the help of a professional to fix it.


If your furnace isn’t blowing hot air, it could be due to several different problems. If you suspect either of these issues, follow the steps outlined in this blog post to try and fix them yourself. However, if you’ve checked all of these things and your furnace is still not blowing hot air, it’s time to call a professional. 


AdvantaClean of Fort Lauderdale is here to help. We’re NADCA-certified and our technicians are highly trained and experienced. We’ll diagnose the problem and get your furnace back up and running in no time. Contact us today to schedule a service.

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