What’s the most important for an air purifier?

We are staying a much longer time than usual because of COVID-19. We spend more time with our parents and pets, and we may become a perfect chef in this period. However, when we have the funny time at home, have you ever thought of your room air as it is so important to us? According to the Environmental Protection Agency, the level of pollutants is often two to five times higher indoors than outdoors.
Pollutants such as smoke from cigarettes and cooking; gases from cleaning products and a new house; dust mites; pollen; mold; VOCs and pet dander, whether can be seen or not, all cause an unhealthy indoor environment that influence human’s health. So do you know if your air at home is healthy?
Indeed, the energy efficient window and doors can help improve your room air quality in some aspects, but for some unseen pollutants, they can do little things. Then you may need an air purifier for home, an appliance designed to get rid of all impurities including odors, smoke, dust, pet dander and hair, VOCs. How to choose the right air cleaners?
Most air purifier in the market are using the true HEPA as it’s the most important filtration system with some added features like ionizer, sleep mode, night light etc. So what does HEPA stand for? Are all the HEPA the same?
 
HEPA stands for High Efficiency Particulate Air. It is a standard defined and developed by the U.S. Department of Energy during the 1940s as part of their efforts to contain the spread of particles and contamination resulting from nuclear testing. Now it is usually used as the efficiency standard of air filter. HEPA filters can capture 99.97% or more of particles with a diameter to 0.3 microns that are invisible to the human eyes but harmful to human health.
 
But not all HEPA filters have the same effect. You must be cautious about “HEPA Type” and “HEAP Like” filters because they fail to meet the standards. These terms are meaningless and are used to confuse customers. The true HEPA filter usually ranges from H10 to H14. This is the “grade” of HEPA or the level of efficiency. Most air purifiers in the market use the H12 true HEPA filter. HEPA H13-H14 are the higher tier of HEPA and are considered medical grade quality. Here are some different levels of HEPA filters. The higher grade of HEAP, the better performance it has.
HEPA H14: pass up 0.005% of 0.1 micron particles per liter of air.
HEPA H13: pass up 0.05% of 0.1 micron particles per liter of air.
HEPA H12: pass more than 0.5% of 0.1 micron particles per liter of air.
HEPA H11: pass a maximum of 5% of 0.1 micron particles per liter of air.
HEPA H10: pass more than 15% of 0.1 micron particles per liter of air.
   
Thus, it is important to see that how important the filter is to clean the air. It is the core of an air purifier. So how is your air purifier?
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