Unfortunately, many people don't see big benefits after bringing an air filter home. Why? The primary reason isn't a mechanical malfunction, but an owner malfunction. Most people don't service the air filters regularly, so they're not that effective. They don't clean or change components as the directions recommend. If you stick to regular maintenance, however, air filters can be useful for taking allergens out of the air.
Find out more about this book:YOU: The Owner's Manual, Updated and Expanded Edition: An Insider's Guide to the Body that Will Make You Healthier and Younger