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What does HEPA stand for? It sounds complicated, but HEPA air filters are nothing fancy. On the other hand, fiberglass air filters are made from glass — that means things like silica, alumina, calcium oxide, boron oxide, magnesium oxide, sodium oxide. They can capture viruses, bacteria, pollen, PM2. HEPA air filters are the most important component of any air purifier. In the US, they must remove All particles? A particular size of particles? The answer to this question is the most fascinating thing about HEPA filters.

Most of us might start out thinking HEPA filters work like a net, like this. That intuition is true for big particles. For comparison, a human hair is about 50 microns wide. So 1 micron is actually quite small. Scientists have a name for that.

What happens for particles smaller than 1 micron? Particles shop air filter hepa wall size can fit between the gaps in the filter. But they have a problem. OK, so do the particles below that size get through? For the really small particles less than 0. So they move in random zigzag patterns. These particles are so small they could easily fit through HEPA filters.

Because they fly in zigzag patterns, they end up hitting the fibers and getting stuck. Scientists call that diffusion. Straining and impact capture large particles; interception captures medium particles; and diffusion captures the smallest particles. So the larger the particle, the better a HEPA filter filters out shop air filter hepa wall particle? Not so fast! Did you notice the dip in the last graph? That happens because diffusion works really well under about 0. Straining and other mechanics that are more intuitive work really well above 0.

Where those two mechanics intersect is the hardest particle size to capture. This dip in the graph is called the shop air filter hepa wall penetrating particle size. The dip in the graph most commonly occurs around the 0.

Diffusion shop air filter hepa wall incredibly effective at capturing nanoparticles. That means HEPA filters are also incredible effective shop air filter hepa wall capturing nanoparticles too. Unfortunately this is not the case. Since gases are not particles, they move and behave differently in the air.

Read more: what combination of air filters do I need to protect myself from shop air filter hepa wall pollutants? Learn more about the harms of cleaning your HEPA filter here. HEPA filters are high efficiency filters that typically capture over Diffusion also means they are highly effective at capturing nanoparticles too.

Smart Air is a certified B Corp committed to combating the myths big companies use to inflate the price of clean air. Smart Air provides empirically backed, no-nonsense purifiers and masks, that remove the same particles as the big companies for a fraction of the cost. Only corporations benefit when clean air is a luxury. Smart Air provides empirically backedno-nonsense purifiers and masks, that remove the same particles as the big companies for a fraction of the cost.

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We are proud to be the only certified Shop air filter hepa wall dedicated to fighting air pollution. It's Time to Breathe Safe Join the thousands already protecting their health. Notify of. New comments to this discussion Replies to my comments. Inline Feedbacks. View Comments. Load More Comments. Clean Air Shop - Select your country or region.

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Replacement Filters. Replacement filter for Austin Air HealthMate ® air purifier.. All replacement filters have up to a 5 year life expectancy. The Austin Air HealthMate® Filter is our originally designed filter that contains a blend of activated carbon and zeolite capable of absorbing chemicals, odors and gases as well as true medical grade HEPA (High Efficiency Particulate Arrestance). Alen offers four different HEPA air filters to meet your clean air needs. All four remove dust and allergens, but each is uniquely designed to combat other airborne concerns, from mold to pet dander to smoke and more. See more. Something went wrong. Please try again later. Combing % True HEPA performance with Odor Absorbing Carbon Pre-Filters, the A for P and Replacement Air Purifier HEPA Filter provides protection against smoke, soot, micro-dust, pet dander, mold spores, pollen, airborne microbials other allergens as small as microns.

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