Indoor air pollution is a big problem today. Newer homes are designed to be airtight. That's great for fuel efficiency, but not so great for air quality. Pollutants get trapped inside, and fresh air can't get in.

Pollen, pet hair and dander, dust, and cigarette smoke can cause breathing problems. But that's not all. Cleaning products, plastics, carpeting, fabrics, and even your mattress release toxic fumes into the air that can make you sick.

You can eliminate some of the problem sources from your home. But that isn't always practical or desirable. And sometimes it's not enough. So what can you do?

Many people have found that portable HEPA air purifiers solve the problem and give them relief. Below you'll find in-depth reviews of a variety of brands in different price ranges to help you find the right one for your home.