Furnace Dust Problems and How to Get Rid of Them

Furnace Dust Problems and How to Get Rid of Them

If you let a long time pass without cleaning your home, you’ll quickly know how much dust and filth can gather in various locations. Even though you might not be aware of it, furnace dust can float through the air and become trapped in the airflow of your furnace. If that dirt continues to accumulate on your furnace, it can create a tremendous amount of trouble. Today, we will discuss the problems that can arise from having a dirty furnace, as well as the steps you can take to keep your system clean.

How Does Furnace Dust Build Up?

Dust particles can become entrained in the airflow inside your home and recirculated via your furnace via the return ducts. Your air filter can capture these dust particles, preventing them from accumulating in your furnace as they would otherwise. HVAC’s Furnace dust will get through your system’s filter if it is clogged and accumulates on the various components of your system.

If you do not undertake annual maintenance on your furnace, dirt that would normally be eliminated will instead gather in layers, severely reducing your system’s performance.

What Complications May Result from A Dusty Furnace?

Here are some of the effects of dusty furnaces:

  • A reduction in productiveness When dust accumulates on the blades of your system’s fans, it causes them to work more diligently and spend more energy as they spin. In addition, if dirt accumulates on your burners, the heat exchanger in your furnace won’t get as hot as it should, and your heating system will have to run longer to heat your home adequately.
  • Comfort difficulties. If dirt accumulates on the exterior walls of your heat exchanger, it will create a layer sandwiched between the heat exchanger and the air forced over it. Because of this, the air supplied to your house will be warmer than it might or should be.
  • Bad scents. As dirt accumulates inside your furnace, it will eventually catch fire, and while your system is running, you will notice a strong and unpleasant odor of burning debris.
  • Ignition difficulties. It is possible for the fuel nozzle on a conventional or intermittent pilot light to become clogged, which would prohibit the pilot light from lighting the furnace. If your furnace has a hot surface ignition, dirt can accumulate on the ignition, preventing it from reaching a temperature high enough to ignite the burners in your furnace. This can be avoided by keeping the ignition clean.
  • Safety concerns When the burners in your system become dirty, they will need to be able to burn fuel more efficiently. Because of this, gas may accumulate inside your heat exchanger, which may result in a small explosion when it eventually catches fire. In addition, a build-up of dirt can hinder the performance of the numerous safety components that are a part of your system. This can lead to the components breaking down, making your furnace unsafe.
  • Breakdowns. The accumulation of dirt is one of the most common reasons for furnace malfunctions. It is possible for your fan’s motor to become unbalanced, for your blower to overheat, for your heat exchanger to split early, and for other problems to occur.


There are two easy things you can do to prevent furnace dust from building up on your furnace. To begin, make it a habit to inspect or replace your air filter at least once every month. If you want your furnace to work effectively, the filter, which is the primary line of defense against the accumulation of dirt, must be kept clean. Second, make sure you have your furnace serviced once a year. During your tune-up, we will thoroughly clean your system and remove any filth that may have built up on it for the previous year.