Air Filters - Benefits and Types

Air filters are devices that remove contaminants from the air in a specific environment, such as dust, pollen, and other particles.

Air Filters FAQ

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Do HVAC filters really work?

These HVAC (heating, ventilation, and air conditioning) devices steadily push filtered outdoor air into your home. They not only can improve ventilation, but they also curb energy costs. Higher-efficiency HVAC filters can reduce particles, too, but they only work when the system is heating or cooling or the fan’s on.

What are air filters & how do they work?

These are essential for removing airborne pollutants like smoke, mold, and bacteria, as well as allergens like pet dander, dust mites, and pollen. The filters, which are regulated by the U.S. Department of Energy and supported by the Environmental Protection Agency (EPA), remove at least 99.97% of airborne particles.

Who invented the air filter?

Haslett's device filtered dust from the air. In 1854, Scottish chemist John Stenhouse invented a simple mask that used charcoal to filter noxious gasses. In 1860, Frenchmen, Benoit Rouquayrol, and Auguste Denayrouze invented the Résevoir-Régulateur, which was intended for use in rescuing miners in flooded mines.

What are air filters used for?

Air filters are used in applications where air quality is important, notably in building ventilation systems and in engines. Some buildings, as well as aircraft and other human-made environments (e.g., satellites, and Space Shuttles) use foam, pleated paper, or spun fiberglass filter elements.

Does a filter make a difference?

In practice, our tests found that the filter made a difference to how the Blueair Blue Max 3250i Air Purifier performed, with this air purifier being one of the fastest to detect dips in air quality and the quickest to improve air quality levels in a small to medium-sized space.

What are the different types of air filters?

Here are three common types: High-Efficiency Particulate Air (HEPA) filters stand out as one of the most efficient options. Their capability to trap particles as tiny as 0.3 microns is remarkable, making them ideal for individuals with allergies or respiratory issues.

How do air filters work?

The air is forced through the filter, and the material removes particulates and other contaminants from the air. Not all air filters will clean your indoor air with the same level of efficiency. Higher-quality filters, while costing more, will be able to remove more contaminants from your indoor air.