The statistics show that Americans love pets. Yet millions have a pet dander allergy. Though many think they're allergic to pet hair, it's a very different story. Find out more here.

Relative humidity that is too high or low may cause problems for health and the condition of your home. Find out what is ideal and how to maintain an acceptable level.

Nearly every home has low levels of formaldehyde, a harmful chemical and indoor air pollutant. Luckily, there are ways to reduce and remove this toxic substance from your home and improve air quality.

Over-the-counter allergy medicines have evolved over the years. They promise symptom relief for seasonal and year-round allergies. Find out which ones are designed to have the least number of side effects.

As allergy season gets worse every year, you may want new tips for dealing with seasonal allergies. We interviewed allergist Dr. Purvi Parikh who helped dispel the myths and gave expert advice. Check out the video and transcript here.

Looking for a machine that helps remove dust from your home? An air purifier for dust may be just what you're looking for. Find out how they work and the right one for the job.

If your home sustained water damage after Harvey's floods, the conditions were ripe for mold. Here's how to approach mold cleanup long after the destruction.

If what you know about ozone generators is solely from manufacturer claims, you need to read this article. Find out here if you should use one to purify the air in your home.

Carbon air filters are designed to remove gases and odors from the air. Learn more about why people use them, whether these air purifiers work, and if you should use one in your home.

An electrostatic air filter is used to filter particles like dust and other allergens from the air. Learn more about how it works, when it is used, and its most serious drawback.

Mold vs. mildew might seem like an ongoing debate, but there are in fact differences. Read about how you can tell them apart and what you can do to prevent their growth.