Spreetail Blog

Combating Indoor Allergens

Understanding HEPA Air Filters


by Kaiti Hill
May 8, 2019

Allergies are a year-round affair – but for many people, springtime seems to be the main culprit of allergen-fueled itchy eyes and runny noses. While eliminating outdoor allergens is something you’ll have to take up with Mother Nature, you can counteract indoor allergens all on your own. A quality air purifier with a HEPA filter can offer you and your family allergy relief inside the home.

Why a HEPA Filter?

HEPA filters, formally known as High Efficiency Particulate Air filters, are able to capture 99.97% of all particles that measure in at 0.3 microns. A micron is a scientific measurement equal to 1 millionth of a meter – so we’re talking really tiny particles here. To better put 0.3 microns into perspective, a strand of human hair is somewhere between 50 and 70 microns.

What’s the Significance Behind 0.3 Microns?

Scientists have discovered that 0.3-micron particles are the most likely to surpass other types of filters – which created the need for the HEPA filter.

What About the Particles HEPA Filters Can’t Capture?

HEPA filters aren’t intended to work alone. When paired with other filter layers, particles larger or smaller than 0.3 microns will be captured too.

Is There a Difference Between HEPA and True HEPA Filters?

The US and EU have different HEPA standards. In the US, HEPA filters capture 99.97 percent of particles that are 0.3 microns in size. In Europe, the percentage is lower – sitting at the 85 percent mark. True HEPA is commonly used to refer to the US HEPA rating – as it’s higher than the EU’s. When shopping for an air purifier, look for the number 99.97 to ensure your HEPA filter is meeting the highest standards.

What Indoor Allergens Can Air Purifiers Eliminate?

An air purifier with multiple filtration levels, including a HEPA filter, can reduce and eliminate a number of allergens found within the home. Common home allergens include: pollen, mold, dust, tobacco smoke, pet dander, insects, and VOCS. VOCS - Volatile organic compounds – are found in everyday products that we have in our homes. They can be found in cleaning solutions, fabrics, plastics, paints, and more.

Ready to kick indoor allergens to the curb? Shop our selection air purifiers right here.

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