Fort start, HEPA means High Efficiency Particulate Air, and this is one of the most effective filters and is able to retain 99.9% of the particles that go through it. Air purifiers use this filter technology because almost no impurity is able to pass this barrier due to two principles. First of all, the HEPA filter is made out of fiber glass and the foreign particles adhere to this material, while the clean air goes through it. Second of all, the strong air flow that is inside of the purifier keeps captive all the impurities.
As mentioned before, almost 100% of the particles are filtered from the air. We can mention among these particles, all the factors that trigger the asthma crisis and the allergies, the mold and the mildew spores, the dust mites, allergens, bacteria, pollen and dust. All the particles that are larger than 0.3 microns will be trapped in the filter.
The air purifier is an extraordinary invention and it helps people all over the world to live a better life and avoid pulmonary illness aggravation. It is a tough job to find the most suitable air cleaner and you have to take into consideration many aspects, like air flow, number of times the air is filtered per hour or noise. However, the HEPA filters are among the best ones and here’s what you should know about their functioning and the purifiers that use them:
1. Check if the HEPA filter is authentic
There are many companies that make purifiers and pretend they work with an HEPA filter. However, the filter is not real HEPA; it just looks like one, but doesn’t meet the real standards. Another thing that some producers do is to advertise that the filter stops 99.9% of the particles bigger than 3.0 microns. They trick the customers with this, because it just sounds like HEPA, but the real product stops 99.0% of the particles bigger than 0.3 microns and the difference is significant. These filters are also ok, but this difference cannot classify all filters as HEPA.
2. Search for a purifier with a pre-filter
HEPA filters are extremely useful, but they cannot do everything by themselves. A pre-filter will help the machine and will prolong its life. This pre-filter will stop the large particles, the animal hairs and the lint.
3. A simple filter won’t absorb unpleasant odors
Your air purifier can be considered complete if it has among the pre and the HEPA filters, a post-filter responsible with the odors. The VOC filter has a porous structure and traps the fumes, the chemicals and the odors.
In conclusion, the HEPA filters are extremely valuable for air cleaners and their presence increases the quality and the efficiency of the purifier. However, you should be very careful when you make a purchase like this, because there are a lot of types of purifiers and not all of them do the job this precise. Also, the association of this filter with a pre and a VOC filters is highly recommended for purified air.