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A box fan is great for moving hot, stuffy air out and circulating cool, fresh air in, but it has a tendency to collect a considerable amount of dust and grime over time. Although they are not always visible to the naked eye, dust particles are floating through the air. The combination of the fan’s movement, the static electricity charge generated by the spinning fan blades, and the general stickiness of dust particles is what attracts dust and causes it to accumulate on a fan’s blades and grills.
If you have too much dust clinging to your fan, it can be redistributed throughout the air inside your home. But a layer of dust also just looks unsightly. Keeping your box fan clean will ensure optimal air quality and increase the longevity and efficiency of the fan motor. Read on to learn more about how to clean a dirty box fan.
Step-By-Step Methods for Cleaning a Box Fan
It’s a good idea to clean a box fan regularly to keep dust accumulation in check, but taking it apart to give it a thorough cleaning can be a hassle. That’s why we are offering two methods for box fan maintainance: an easy cleaning you can do often without having to take apart the box fan and a deep cleaning that requires taking apart the box fan that can be done less frequently.
Whichever method you choose, we recommend wearing a face mask and latex gloves as protection against dust, particularly if you have allergies or respiratory issues.
If you’ve been putting off this task, you’re not alone. According to a national survey by the American Cleaning Institute cited in TOH Magazine, while 77 percent of respondents said they do some form of deep cleaning, most admit they don’t feel they’re doing it right or doing enough. Household items with motors and moving parts — like fans, washing machines, and dryers — are among the most commonly neglected.
Pro Tip: Repair Clinic pro Chris Zeisler advises that cleaning appliances inside and out means “they’ll work better and last longer.” The same principle applies to your box fan — dust buildup forces the motor to work harder, shortening its lifespan and reducing airflow efficiency.
What You’ll Need
How to Clean a Box Fan Without Taking It Apart
- Unplug the fan to prevent electrical shock or fire.
- Using your vacuum cleaner’s brush attachment, suction the dust that has accumulated on the fan’s front and back grills.
- Use a can of compressed air to blow the dust off the fan blades, front and back, and near the motor.
- Take a slightly damp microfiber towel and wipe the fan grills, front and back, and the outer housing of the fan, being careful not to wet the electrical components or the motor.
- Allow the fan to dry completely before resuming use.
How Often Should You Clean? Cleaning expert Melissa Maker, host of Clean My Space on YouTube, says that if you keep up with regular dusting, fans don’t need much more than that. For box fans, a quick vacuum of the grills every few weeks during heavy-use months prevents the kind of caked-on buildup that eventually requires a deep clean or disassembly.
How to Deep-Clean a Box Fan by Taking It Apart
Before disassembling or cleaning a box fan, make sure to read and follow the manufacturer’s instructions.
- Unplug the fan to prevent electrical shock or fire.
- Remove the screws from the front and back grills of the box fan using a screwdriver and detach them from the fan’s housing.
- Using the brush attachment, vacuum the loose dust from the grills.
- Submerge the front and back grills in the bathtub or a large storage tub filled with hot, soapy water. If you don’t have a large enough tub, you can mix a solution of water and a few drops of dishwashing liquid in a spray bottle and thoroughly spray the grills. Let soak to allow the dirt to loosen for at least 10 minutes.
- While the grills are soaking, use the vacuum cleaner’s brush attachment to carefully remove dust from the fan blades and the fan motor.
- Wet a microfiber cloth and wring out excess water so the cloth is slightly damp. Wipe the components of the fan housing and blades, being very careful not to wet the electrical components or the motor. Then, use a separate dry microfiber cloth to thoroughly dry the housing and blades. If any dust has collected on the fan’s motor, blow it off with a burst of compressed air.
- Return your attention to the fan grills. Use a microfiber cloth dipped in soapy water to help clean the corners of the grills.
- Rinse the grills with clean in the tub or bring them outside and rinse them with a garden hose. Allow the grills and the housing to dry completely at least 30 minutes.
- Once you are sure that all the components are dry, assemble the fan by screwing the front and back grills back onto the housing.
