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HEPA Air Purifiers
HEPA filters offer a high level of air purification, up to 99.97%, for pollutants from 0.3 microns. The term HEPA stands for High Efficiency Particulate Air. The specification was reportedly designed by the Atomic Energy Commission during WWII. The original purpose was to classify efficiency as to how efficiently radioactive plant exhausts were retained by the filter. The same type of classification may be found as an S-Class filter specification. Different types of other filter specifications include ULPA (Ultra Low Penetration Air), which is ofter referred to as Ultra HEPA. ULPA specifies filters used in pharmaceutical labs and similar types of environments where the highest degree of clean air must be maintained. An ULPA filter must collect particles to 0.12 µm in size with efficiency of 99.999%. Available HEPA Air Purifiers Because of the popularity of HEPA air cleaners, most manufacturers make purifiers with HEPA filters. These manufacturers include Austin, Clarifier, AllerAir, Hamilton Beach and IQAir. The HEPA series from these manufacturers include: IQAir HealthPro HEPA Air Cleaners |