Can you make your own air filter?

Yes, you can make your own air filter using common materials like a box fan and a HEPA filter. By attaching a HEPA filter to the intake side of the fan, you can effectively create a simple air filtration system that captures dust, pollen, and other airborne particles. This DIY approach can improve indoor air quality, but it's important to ensure the filter is properly sealed to avoid unfiltered air bypassing it. Additionally, regular maintenance and filter replacement are essential for optimal performance.