Using the right air filters is crucial for ensuring healthy indoor air quality. This article highlights various air filters, and respective technologies that are utilized to make our office and homes a safer and better place to breathe.

Meet the Pre-Filter

This predominant type of filter is works in close junction with HEPA filters. The entire function of a pre-filter is to block majority of the large particles contaminating the air. This air filter is entirely made up of either nylon or foam, and can be washed repeatedly and allows many of your primary filters to last longer.

The HEPA Technology

An acronym for High Efficiency Particulate Air, it has become one of the most common and effective filter technology for residential and commercial spaces.. For a filter to truly classify as a HEPA filter, it needs to operate at an efficiency of 99.97% and catch all particles that are larger than 0.3 microns. These particles are often invisible to naked eye, since our eye can detect only about 10 microns or bigger particles. Hence, HEPA filters are effectively able to filter particles such as bacteria, chemicals, and viruses.

Activate Carbon Layers

Essentially working as an air filter, it is a form of carbon that has been processed so that it can become extremely porous and make it able to have a large area for absorption. During WWII it was used to purify water and take the color out of sugar.

It was later discovered as a good device for protecting soldiers as part of gas mask. The primary use of them is to remove odors from the indoors and remove Volatile Organic Compounds (VOCs) such as fumes from cooking, tobacco smoke, ozone, and smog. However, it is important to know that working alone they are quite ineffective in the removal of allergens and dust particles in air. They are best used in combination with a HEPA air filter making them a killer combination for unsafe and unhealthy air.

UV Technology

An effective technology in killing bacteria and viruses, it is best used in front of lamps. They are often used in many technologically advanced purifying devices as the last stage of filtration after a HEPA filter and layer of activated-carbon. The UV air purifier uses the light from a lamp to convert molecules of water and oxygen and into hydroxyl and ozone, which interact with harmful particles and destroy them into harmless components.


The last and final air filter on our list makes uses of chemical injections to clean the surrounding air. The devices use negative charges that cause dust particles gain a charge and be collected. A technology that may seem extremely advanced, however, ionizers have proven to be less than effective when compared to the other option available.

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