What is a HEPA Air Purifier?

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Below, you’ll learn everything you need to know about HEPA air purifiers and find out out if one is right for your home.

What Does the Word “HEPA” Really Mean?

If you’ve done any sort of shopping for home cleaning devices, like a vacuum or air purifier, you’ve undoubtedly come across a four letter term, “HEPA.”

A lot of companies are boasting this acronym as a marketing tactic in hopes that you choose their product over another competitor’s who doesn’t have it.

But, what is a HEPA air purifier?

HEPA stands for High Efficiency Particulate Arresting.

In layman’s terms, this means that a product with this label is highly efficient at capturing microscopic particles. This covers most dust, dander, pollen, mold and other common allergens.

In particular, a HEPA device is outfitted with a dense filter, which is the HEPA filter. This filter is what traps these particles and prevents them from returning to the environment.

Is There Only One Type of HEPA Rating?

Unfortunately, many companies are placing the HEPA term on their products, but this can be misleading to consumers.

There are actually several different terms associated with the acronym HEPA. What you’ll find when shopping are the terms “True HEPA,” “HEPA-like” and “HEPA-type” labeled on products.

At first, this may not seem like a big deal, but there is actually a very big difference between the different terms.

The term “True HEPA” is the one you want to look for when shopping for an air purifier or vacuum. In order to carry this label, a product must meet strict standards set by the U.S. Department of Energy. This standard regulates that the HEPA filter must be able to capture 99.97% of particles as small as .3 microns.

In order to visualize this size, a human hair measures 5 microns, which is more than 7x the width of the smallest allergen.

When a product includes the terms “HEPA-type” or “HEPA-like”, this means that it cannot remove particles as small as a “True HEPA” device. The words “type” and “like” alert you to the fact that they are inferior to a “True HEPA” product.

In fact, there is no standard set in place for HEPA-like and HEPA-type products. One device may capture particles as small as 2 microns in size or 5 microns in size. You’ll never know unless you read the fine print.

These terms are mostly being used as marketing tactics to get consumers to buy a product, thinking that it is a high quality, HEPA system. When in fact, it may not do much help at all for the air space inside your home. A good indicator is the low cost for these devices. A True HEPA product costs a lot more because the filter is the gold standard in the industry. Cheaper devices almost always have an inferior filter inside the product.

So, always look for the “True HEPA” label when buying a vacuum or air purifier for your home. This is the best investment you can make.

Now, let’s get into the pros and cons of a HEPA air purifying device.

Advantages of a True HEPA Air Purifier:

Because a True HEPA air purifier is excellent at trapping almost all airborne contaminants, it is the best choice for someone who has asthma or suffers from allergies.

This dense filter is amazing at trapping allergens such as dust, pollen, mold and pet dander. Also, because these particles are trapped inside the filter, there is no way for them to re-enter the air space, keeping your home fresh and clean.

In fact, this type of air purifier is considered to be the best home air purifier for almost all applications.

Disadvantages of a True HEPA Air Purifier:

One of the major cons to a True HEPA filter is the fact that it cannot remove odors or viruses and bacteria.

You see, a HEPA filter does not have any odor neutralizing power. Yes, it can trap harmful particles, but the odors given off by these contaminants still persist. To get rid of odors you really need a product that includes an Activated Carbon filter. This filter is designed to neutralize and eliminate odors and smells of all kinds.

HEPA filters are also not very good at eliminating viruses and bacteria. Since, this particles are made up of DNA, the best way to get rid of them is to choose a product that includes a Ultra Violet light. This light sends out radiation into the air that zaps and kills these harmful contaminants by breaking apart their DNA structure. If this is something you’d like for your home make sure that the device includes this added feature.

Finally, HEPA air purifiers are the most expensive type of product to get. Since, the HEPA filter is such an advanced technology that works extremely well for almost all contaminants, the price for this filter can be very high – which increases the price of the product.

Although price does increase, the advantages far outweigh the cost when you consider how much cleaner and fresher the air space is within your home.