HEPA filters are the most popular type of air purifiers in the market currently. Using a HEPA filter is the most conventional method of air purifying. Whenever the word air purifying comes up, HEPA filter is always the answer. Such is its popularity in the market. Though HEPA filters are very effective, they do have some limitations too. As a matter of fact, all the purifiers have some limitations.
A HEPA filter has to be bought after calculating how much of clean air we need it to deliver. Limitations are always there to every appliance, but this does not change the fact that HEPA filters definitely do their job and they are a must in homes. Air pollution is always increasing and the graph never goes down. Everyone is aware of the side effects of breathing polluted air. So, why not take measures beforehand?
We can install these HEPA filters in our home and be safe from all the diseases and health problems air pollution can cause. In this post, we are going to point out the significance of HEPA filters in our homes.
Efficiency of HEPA Filters at Trapping Dust
HEPA filters were invented during the time of World War 2. Initially, they were used to prevent the radioactive materials from escaping from the laboratories. Now as time is passing, the air around us is becoming more and more toxic, so now HEPA filters are also being used domestically. Inside HEPA filters, there are randomly arranged fibres that have the primary function of trapping the dust particles. These fibers are capable of trapping not only large particles, but they can also efficiently trap the smaller ones.
HEPA filters can definitely improve the indoor living quality. As the air remains clean and purified, you are also safe from air-borne diseases. A HEPA filter is capable of removing 99.97% of pollutants, which are of any size more than 0.2-0.3 microns. If this condition is not satisfied, the filter is not termed as a HEPA filter. A dust particle is of 5 microns size and a human hair is 40 microns. This tells us how efficiently HEPA filters can purify the air and make it safe for us to breathe.
Though HEPA filter is very popular nowadays, it has to pass some tests before it is out in the market. The results of these tests can be found on the outside of these filters itself. In addition to the test that it should trap particles of size larger than 0.3 micron and clear 99.97% of air, there is also another factor to check and make sure that it is efficient. There are many duplicate filters too. They cannot be called HEPA filters because they clean only up to 80-90% of air, but they claim to be original HEPA filters. Beware of such duplicate products.
The second thing to check on your HEPA filter is the MERV rating. MERV rating means the minimum efficiency reporting value, which is calculated on a scale of 1-20. If the test results printed on your HEPA filter show a higher MERV rating, it means it is a good HEPA filter. The higher the MERV rating, the better the filter is. The significance of higher rating is that the higher the rating, the smaller the particles it can remove from air.
If the air around your house is clean and you think you don’t need to purify 99.97 % of dust particles, then you can go with 80-90%, which will be a cheaper option for you. Also make sure that your HEPA filter is completely sealed. If it is not 100% sealed, then it means it is not completely effective because the trapped pollutants may come out of the filter back to the air.