Millions of Americans struggle with allergies, asthma, and other respiratory issues. What many do not realize is that the air inside their homes could be contributing to these problems.
According to the Environmental Protection Agency (EPA), we spend about 90% of our time indoors, and the air inside our homes can be up to five times more polluted than the air outside. While indoor air quality (IAQ) affects everyone, it is especially harmful for children, older adults, and anyone with pre-existing health conditions.
With energy costs rising and homes becoming more airtight to conserve energy, now is a great time to take a closer look at your indoor air quality.
What Causes Poor IAQ?
Your home may contain many everyday products and systems that quietly pollute the air you breathe. Here are the most common sources:
1. Fuel-burning appliances—Furnaces, gas water heaters, stoves, dryers, and fireplaces produce byproducts like carbon monoxide when they burn fuel. If they’re not properly maintained or vented, these gases can build up indoors and become dangerous.
2. Household chemicals—Many cleaning products contain harmful substances like formaldehyde and benzene, both volatile organic compounds (VOCs). These chemicals can also be found in treated items like carpets, furniture, curtains, and clothing, which may “off-gas” over time and trigger allergies or asthma.
3. Mold and pests—Moisture problems, rodents, and insects can release allergens and biological particles into the air, making respiratory symptoms worse. Even if you do not see mold or pests, their presence might still be affecting your health.
Why Modern Homes Can Make It Worse
Today’s homes are built to be energy-efficient, which often means they are sealed tighter to prevent air leaks. While this helps reduce energy bills, it can also trap pollutants inside your home.
Older homes had natural air leakage that allowed indoor pollutants to escape and be replaced by fresh outdoor air. In newer or well-sealed homes, if there is no proper ventilation system, these pollutants can build up, potentially worsening indoor air quality.
What You Can Do About It?
Improving your home’s air does not have to be overwhelming. Here are some practical steps you can take:
– Open windows when weather permits, especially when cleaning or cooking.
– Use exhaust fans in the kitchen and bathroom to remove moisture and fumes.
– Change HVAC filters regularly—at least every 2–3 months.
– Avoid harsh cleaning products—look for low-VOC or natural alternatives.
– Fix leaks and address any mold or pest issues quickly.
For a more thorough approach, consider working with a building science professional who can test your indoor air and recommend solutions. They can measure pollutant levels, install proper ventilation systems, and help you keep your air clean over time.
Your home should be your safe space, not a hidden source of health problems. By paying attention to indoor air quality and making a few smart changes, you can create a healthier environment for yourself and your loved ones.
