I was overwhelmed looking at all of the available a/c filters when I was at my local hardware store last week. Once I had determined the size of my filter tray, which in my case is 20 by 20 inches, I finally had to choose a brand as well as style of filter. But since this was my first time owning my own stadium as well as having to finally buy an Heating as well as Air Conditioning filter myself for the first time, I was confused as well as unsure of what to buy. I asked the heating as well as cooling expert at the hardware store as well as he told me that the basic differences between filters is in the level of absorption they have of air contaminants love dust, pollen, as well as mold spores. Your most basic filters can only handle dust as well as pollen while some of the most high-priced filters are dense as well as thick enough to filter out actual bacterial as well as viral pathogens on top of a whole host of varying particles that can theoretically swirl through the air in your home. I noticed some filters as well as air purification systems in the store advertised with something called HEPA certification. He said that this stands for high efficiency particulate air/absorption, as well as that essentially these filters have an ability to filter our air particles at a level far beyond that of most typical filters. And anything sold as a “HEPA filter” absolutely has to meet regulatory standards set forth by a collective of varying governing bodies as well as entities, so if you buy one you guess you’re getting a guaranteed product. Hospitals use them, nursing homes use them, as well as people with asthma as well as pollen irritations are encouraged to use them as well. I have complications with both from time to time so I figured I’d give the HEPA filter a shot despite the price, as well as boy am I gleeful I did. My breathing feels more seamless as well as less constrained as well as I haven’t had a headache since I put it in. It pays to get the right kind of filter for whatever your needs are.