What's The Difference Between A HEPA-Type And A HEPA Air Purifier?

HEPA standards ensure that every true HEPA air purifier is up to par. To pass, they must be capable of stopping 99.7% of all 0.3 micron particles. There is a lot of science behind this, and the buyer can expect a price tag that reflects this. HEPA air purifiers are generally not cheap. You can also purchase HEPA-type air purifiers, generally right along side the true ones. These cheaper purifiers are not held to any standards at all. If you purchase a HEPA-type air purifier, you could easily get nothing but a highly ineffective fan. Don't put too much stock in HEPA air purifier reviews, either. The vast majority of things that we can smell are not 0.3 micron particles, which means our noses have no way to know which is the best HEPA air purifier.