What is the function of HEPA filter in air purifier

Air purfier with different models on sale. with different functions.
HEAP which is short for High efficiency particulate air, is one of the most popular technology used in air purification.
Standard HEPA filters can absorb 99.7% size 0.3 microns of micro size (the size of 0.3 micron is the most difficult filter).
But its wind resistance is relatively large, seldom used commonly in air purifier, the actual air purifier manufacturer allege HEPA are actually the real HEPA filter efficiency is slightly lower than HEPA, wind resistance is relatively low.
Best air purifier use the good HEAP, quality and working all very best one.


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