Improve Indoor Air Quality to Set Up a Healthier Home Environment

Having good indoor air quality is an important part of having a healthy living space. People spend more than 90% of their time indoors, and your indoor air can be two to five times more polluted than outdoor air.

We offer a free Asthma-Friendly Home Checklist Download PDF that can help you identify and reduce triggers. You can go through this list with everyone in your home that has asthma and allergies. 

If you are a renter, share this page or the printable checklist with your landlord. 

Mouse over (or click if you're on mobile) each area of the house for a helpful checklist to help you improve air quality and reduce asthma and allergy triggers in your home:


You can improve your indoor air quality by cutting down the sources of allergens and asthma irritants throughout your home:

  • Improve air flow in your home – leave interior doors open, run exhaust fans in bathrooms and kitchens.
  • Avoid harmful products (like bleach and other harsh cleaners) as much as possible.
  • Use CERTIFIED asthma & allergy friendly® products (bedding, vacuums, cleaning products, flooring, paint and more).
  • Establish regular cleaning routines to remove dust, pollen, animal dander and mold from your home.
  • Measure your home’s humidity level and keep it below 50%. If you live in a wet climate, you may need a dehumidifier.
  • Keep windows closed during peak pollen times or during times of high outdoor pollution.
  • Remove items with strong scents like candles. Replace traditional scented candles with battery-powered ones.
  • If possible, remove carpets and replace with solid surface flooring.
  • Maintain your HVAC (furnace and air conditioning) system and replace the air filters as recommended by the manufacturer.
  • Use portable air cleaners (air purifiers) in rooms where you spend the most time (remember to look for the CERTIFIED asthma & allergy friendly®).
The asthma & allergy friendly® Certification Program helps you find products that have been independently tested in labs and meet standards adopted by the Asthma and Allergy Foundation of America. These products have proven that they effectively remove or reduce your exposure to asthma and allergy triggers, such as dust mites, pollen, volatile organic compounds, animal dander and more.

Asthma and Allergy Friendly


Indoor Air Quality Resource Center

Find CERTIFIED asthma & allergy friendly® products: Get to know more about our asthma & allergy friendly® Certification Program. Find out about the science behind the program and explore all of the CERTIFIED products.

A Look at the asthma & allergy friendly® Certification Process: Anyone can label their product as “hypoallergenic,” but there are no regulations on that term. Our asthma & allergy friendly® Certification Process tests household products against strict standards to make sure they can truly help you have a healthier home.

Why Healthy Indoor Air Quality Is Important: We spend around 90% of our time indoors. So it's no wonder our indoor air can have such an impact on our health. Learn why and what you can do to improve the air in your home.

Building and Remodeling When You Have Asthma and Allergies: Paint, Flooring and Insulation: Before you begin construction or start your next home remodeling process, learn about how home products can affect your health.

Air Cleaners: What You Need to Know: Air cleaners can be helpful tools for maintaining healthy indoor air. But there's a lot you need to know before you shop for one.

Protect Yourself From Dust Mites With Asthma and Allergy Friendly Pillows and Pillow Covers: The right pillow can help make your sleeping environment healthier. We break down what to look for in a pillow to help you reduce your exposure to dust mites and other allergens that can collect in your bedding.

Not All Vacuums Are Equal: Some vacuum cleaners can spread allergens back into the air while you’re cleaning. Know what to look for the next time you go shopping for a vacuum cleaner.

Humidity’s Role in Asthma and Allergy Management: Humidity that's out of balance can effect your indoor air. Learn what can happen if your house is too humid or too dry.