Indoor Air Filters: Mistakes to Avoid During Severe Weather

Last updated: 2023-09-05

During severe weather events like wildfires, it's crucial to optimize the use of indoor air filters to safeguard your air quality. This involves selecting the right filtration systems and implementing effective strategies to minimize pollutant infiltration indoors.

Summary

• Consider high-efficiency filters and portable air cleaners to improve indoor air quality.
• Regularly check and replace filters, especially during severe weather conditions.
• Adjust HVAC systems to limit outdoor air entry and enhance filtration effectiveness.
• Create designated clean areas in your home to further reduce exposure to pollutants.

What Indoor Air Quality Strategies Should You Follow During Severe Weather?

When preparing for severe weather, particularly wildfires, utilize high-efficiency particulate air (HEPA) filters if possible. These filters capture fine particles, including smoke and other outdoor pollutants. Additionally, consider using portable air cleaners as necessary to improve indoor air quality in confined spaces. (EPA)

How Should Homeowners Adjust HVAC and Filters During Severe Weather?

Adjusting your HVAC settings can significantly enhance your indoor air quality during severe weather. Keeping your system on recirculation mode prevents outdoor air from entering your home, thereby filtering the air inside more effectively. You should also ensure your system’s filters are of high quality and replace them frequently, especially if they become clogged with smoke or particulate matter. (EPA)

Public-Health Guidance for Using Portable Air Cleaners During Wildfire Smoke Events

Public health guidelines suggest that portable air cleaners can be particularly effective if they have HEPA filters. When wildfires are present, creating a "clean room" can provide a specific space in your home that remains free from external contaminants. This room should ideally have a portable air cleaner alongside sealed windows and doors to enhance the air purity. (EPA)

Common Mistakes to Avoid with Indoor Air Filters During Severe Weather

1. Neglecting to Replace Air Filters Regularly: Filters can become saturated quickly during severe weather. The EPA advises checking them frequently during wildfires and replacing them as needed.
2. Using Filters That Are Not Rated for Smoke: Ensure your air filters are appropriate for smoke and fine particles. Not all standard filters will suffice in such conditions.
3. Ignoring Other Sources of Indoors Pollution: Even with good filtration, pollutants can enter from various sources. Ensure you’re minimizing dust and other allergens that can make indoor air quality worse.
4. Failing to Seal Windows and Doors Properly: If your HVAC system relies on outdoor airflow, keeping windows and doors properly sealed can enhance its efficiency and effectiveness.
5. Overlooking Clean Room Setup: Designating a clean room with an air cleaner can be an effective strategy, but many overlook this until it is too late. Setting one up prior to an event is crucial.

What We Recommend

• Use high-efficiency air filters and portable air cleaners.
• Regularly maintain and replace all air filters, particularly during severe weather.
• Ensure HVAC systems run in recirculation mode when needed.
• Consider creating a clean room in your home for added protection against polluted air.