There are harmful gases and fumes that may just pass through a HEPA filter. HEPA filters may cause air to become too dry. Finally, some HEPA filters may produce ozone, which is an unhealthy gas that can irritate the lungs.

Expensive air filters usually use higher-quality materials, such as metal or plastic. If you are looking for a cheap air filter that needs to be replaced often, then you should buy a low-quality one. At the end of the day, it is important to consider your needs before making a purchase.

Second Nature began in 2012 as a company called FilterEasy. The mission was simple: make replacing air filters as convenient as possible. In time, co-founders Thad Tarkington and Kevin Barry made it happen.

One of the trickiest parts about pet ownership is figuring out a way to deal with all of the shed pet hair that seems to find its way into every corner of the house. While buying a good vacuum for pet hair can certainly help with the problem, adding an air purifier can help capture and remove hair from your home, too.