We all want to do everything we can to ensure that the air we breathe in our homes and office environments is clean and healthy. Luckily, there are now dozens of consumer products now on the market that work to filter air and reduce the presence of indoor pollutants. These air cleaners may be purchased as portable units that fit easily you're your living space, or in the form of in-duct systems to be installed as part of your HVAC system (the industry abbreviation for your heating, ventilation and air conditioning system).

With such different types and so many products available for us to choose from, how to decide which is best? Let's take a look at the basic categories of air filtering devices and what each group offers:

HEPA Filters

HEPA stands for