Whats wrong with the furnace filters that I buy at the store?
A furnace filter is just that: a filter to help your furnace equipment stay clean. In fact, most filters are in heating and cooling systems to protect the equipment not the people. They do almost nothing to improve the air quality from a health standpoint. Even the “30%” filters you see at the stores are extremely inefficient in that they are unable to capture the smallest particles most dangerous to human health.
