How to Keep Your Home Air Clean During Wildfires: DIY Filters, AC Tips & More (2026)

As wildfires continue to rage across various regions, the impact on air quality extends far beyond the immediate vicinity. The orange-hued skies, while eerie, are just the tip of the iceberg when it comes to the health risks posed by these disasters.

In this article, we'll delve into the strategies for maintaining clean air indoors during wildfires, exploring the science behind DIY air filters and the importance of sealing up homes to mitigate the entry of hazardous particles.

The Impact of Wildfire Smoke on Health

Wildfire smoke is a complex mixture of gases and fine particles that can cause a range of health issues, both short-term and chronic. From shortness of breath and chest tightness to headaches and burning sensations in the nose and eyes, the effects can be immediate and severe.

What many people don't realize is that these symptoms are just the beginning. Prolonged exposure to wildfire smoke can lead to more serious health complications, especially for vulnerable populations like the elderly, children, and those with pre-existing respiratory conditions.

Safeguarding Indoor Air Quality

When it comes to protecting yourself from the harmful effects of wildfire smoke, the first line of defense is often your home. Health officials advise staying indoors and taking steps to ensure the air inside remains clean and safe to breathe.

Running Your AC Safely

If you have central air conditioning, it can be a powerful tool in maintaining clean air. The key is to ensure your filters are replaced regularly and are of the highest filtration level your system can handle. MERV 13 or higher filters are ideal for trapping fine particles. Additionally, setting your air to recirculate and closing vents that pull air from outside can further improve indoor air quality.

For those with portable air filters, HEPA filters or those specifically designed to trap small pollution particles are recommended. It's crucial to ensure these devices do not generate ozone, another harmful air pollutant.

DIY Air Filters: A Cost-Effective Solution

One of the most intriguing aspects of this topic is the emergence of DIY air filters. These simple, affordable solutions, created by duct-taping furnace air filters to a box fan, have been proven effective by scientists at the Environmental Protection Agency (EPA).

The beauty of these DIY filters is their accessibility and affordability. With just a few materials and a bit of duct tape, anyone can create a powerful air-cleaning device. The EPA even provides instructions on modifying the design to use fewer filters, making it even more accessible.

Sealing Up Your Home

Another crucial aspect of maintaining clean indoor air is sealing up your home to prevent the entry of hazardous particles. Whether it's using towels, tape, or other materials, plugging areas where air could enter from outside is essential.

This strategy is particularly important when smoke levels are high. By avoiding anything that burns, such as candles or fireplaces, and planning ahead with meal prep, you can further reduce the risk of indoor air contamination.

Conclusion

Wildfires and their impact on air quality are a growing concern, especially with the increasing frequency and intensity of these disasters. By understanding the risks and implementing strategies like those outlined above, we can better protect ourselves and our loved ones from the harmful effects of wildfire smoke.

As we continue to navigate these challenges, it's essential to stay informed and adapt our strategies to ensure the air we breathe remains clean and safe, both indoors and out.

How to Keep Your Home Air Clean During Wildfires: DIY Filters, AC Tips & More (2026)
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