How to Clean a Blower Wheel on a Furnace

One of the most important components of a furnace is the blower wheel, or fan blade. This is a large wheel-like device that is responsible for drawing air into the furnace and then pushing it through the ducts and into the rooms of your home.

It is important to keep the blower wheel clean and free from dirt, dust, and debris in order to ensure that your furnace is running as efficiently as possible. Unfortunately, over time, dirt, dust, and debris can accumulate on the blower wheel, which can reduce the efficiency of your furnace or even cause it to malfunction. Fortunately, it is relatively easy to clean a blower wheel on a furnace, and doing so can help to keep your furnace running smoothly.

Safety First

The first and most important step in cleaning a furnace blower wheel is to turn off the furnace and disconnect the power. This is very important, as attempting to clean a blower wheel while the furnace is running can be extremely dangerous. After disconnecting the power, it is important to take safety precautions, including wearing safety glasses, gloves, and a dust mask due to the presence of dust and debris.

Remove the Blower Wheel

After disconnecting the power, the next step is to remove the blower wheel from the furnace. It is important to be very careful when doing this, as the wheel can be quite heavy and you do not want to drop it or damage it in any way. After removing the blower wheel, you will be able to access the interior of the wheel, which is where most of the dirt and debris will be located.

Cleaning the Blower Wheel

The easiest way to clean the blower wheel is to use a vacuum cleaner with a long, narrow attachment. This will allow you to get into all of the hard-to-reach areas of the wheel without having to disassemble it. It is important to be very gentle when vacuuming the wheel, as the blades can be easily damaged if you are too aggressive. Once you have finished vacuuming the wheel, you can use a soft cloth and some warm, soapy water to wipe down the outside of the wheel. This will help to remove any remaining dirt and debris that the vacuum may have missed.

Reinstalling the Blower Wheel

After cleaning the wheel, it’s time to reinstall it. You should follow the reverse order of the steps you took to remove it. Carefully screw the wheel back into place, making sure not to overtighten the screws. After installing the wheel, you can reconnect the power to the furnace.


Cleaning a blower wheel on a furnace is a relatively simple process that can help to keep your furnace running smoothly. It is important to always take safety precautions when working on any type of furnace, and to always make sure that the power is disconnected before attempting any type of maintenance or repairs. With the right tools and a little bit of patience, you can easily and safely clean the blower wheel on your furnace, helping to keep it running as efficiently as possible.

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