HEPA filter is a reliable barrier
If a modern woman takes a vacuum cleaner, she will say that cleaning in the house is impossible. But in fact our grandmothers used to do without this miracle device, and in their homes they were not even dirtier than modern housewives. Is it possible that we were so spoiled by civilization?
No, the fact is that cleaning with a modern vacuum cleaner is very effective. With its help, you can remove dust from any surface, and, most importantly, it does not get back into the room.
Today, manufacturers of household appliances from different countries offer a huge number of models of vacuum cleaners. The most expensive of them are equipped with fine filters. What is this device and what is it for?
The HEPA filter is designed for fine cleaning and microparticle retention. Initially, these devices were designed to equip the ventilation system in hospitals, medical centers and where higher air purity is required. This technology is widely used in the West, it is widely used in the manufacture of air cleaners and vacuum cleaners.
In front of devices of this type, vacuum cleaner manufacturers are installing several more coarse filters that hold larger dust particles. HEPA filters are capable of retaining microparticles up to 0.3 microns in size and do not allow them to get back into the air. It should be noted that such particles are the cause of many diseases and allergic reactions. Therefore, asthmatics and people with allergies should install the HEPA filter on the vacuum cleaner.
They are of two types - disposable and reusable (washable). Disposable filters are made of paper, and reusable (they are much more expensive) - from fiberglass or fluoroplastic. The latter can be washed and continue to operate. Despite the fairly high prices, a reusable HEPA filter after two years of use will have to be replaced. Filters of this type are used in household portable vacuum cleaners of small size. In order to save, they are made in the size of 50-200 cm square. When the HEPA-filter works 20-25% of the life, its efficiency is reduced to 80% of the original level.
Particular attention should be paid to the material from which the casing of the device is made. The main condition of its good work is a close fit to the block. If there is no airtight seal between the casing and the filter, the efficiency of its operation will be zero.
All HEPA filters are divided into classes. In accordance with the international classification, they are assigned numbers from 10 to 14. The larger the model number, the more effective its work.
Some versions of modern vacuum cleaners already have a HEPA filter, others have the ability to install it.
Manufacturers often use expressions like "HEPA" or "like HEPA" to promote their technique, this can mislead consumers.
A replaceable HEPA filter can be bought in all stores selling household appliances of this level, or ordered on the official website of the manufacturer.
Many buyers are concerned about this problem: will the removable HEPA filters that are suitable for their vacuum cleaner model disappear after several years from sale? We can reassure you: manufacturers produce universal options that will fit many models.