How to Make a Homemade Air Purifier

How to Make a Homemade Air Purifier

With wildfires impacting air quality in Los Angeles, having clean indoor air is essential. While commercial air purifiers can be effective, they may not always be accessible. Luckily, you can make an affordable and easy homemade air purifier using simple materials. Here's how you can create your own to help protect yourself and your family from harmful smoke and pollutants.

Materials Needed

  1. Box Fan: A 20-inch box fan works best and is widely available at hardware stores or online.

  2. High-Efficiency Filter: Choose a MERV 13 or higher filter. These filters are designed to capture fine particles like smoke and dust.

  3. Duct Tape: Strong and durable duct tape is ideal for securing the filter.

  4. Cardboard (Optional): To reinforce or modify the frame if needed.

Step-by-Step Instructions

1. Position the Fan

  • Place the box fan on a flat surface with the back (intake side) facing you.

2. Attach the Filter

  • Align the filter with the back of the fan. The arrows on the filter should point towards the fan (to indicate airflow direction).

  • Secure the filter to the fan using duct tape, ensuring there are no gaps between the filter and the fan edges.

3. Double-Check the Seal

  • Inspect all edges to make sure the filter is tightly sealed to the fan. Air leaks can reduce efficiency.

4. Turn It On

  • Set the fan to a low or medium speed for quieter operation and more efficient filtering.

Pro Tips

  • Replace the Filter Regularly: Depending on air quality, the filter may need to be replaced every 1-2 weeks during wildfire season.

  • Use in a Single Room: This purifier is most effective in a single room with closed windows and doors.

  • Add an Extra Layer: For even better filtration, consider adding a pre-filter (like a cheap furnace filter) on the outside of the high-efficiency filter.

Why This Works

A box fan combined with a MERV 13 filter can significantly reduce smoke particles and other pollutants in your indoor air. While it may not match the efficiency of a high-end air purifier, it’s a cost-effective and immediate solution for improving air quality during wildfire season.

Check out this video for another example of How to Make a DIY Air Purifier

Stay Safe, Los Angeles

Wildfire smoke can pose serious health risks, especially for children, the elderly, and those with respiratory issues. Along with using your homemade air purifier, try to stay indoors, keep windows and doors closed, and avoid strenuous outdoor activities when air quality is poor.

At 1987 Juices, we care deeply about your health and well-being. Let’s support one another and stay safe during these challenging times.

With love and care,
The 1987 Juices Family

Back to blog