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How Long can the Coronavirus Survive on HEPA Filters?

Air purifiers with HEPA filters are highly effective at filtering out  COVID-19 coronavirus and other viruses. But viruses can remain on surfaces for scarily long periods of time. When thinking about...

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Three Ways to Improve Indoor Ventilation to Combat COVID-19

Data compiled by the world health organization (WHO) shows that poor ventilation can lead to an increase in virus transmission. As such, improving ventilation indoors should be considered an important...

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Do Air Purifiers Dry Out the Air?

Empirical data shows that air purifiers are great at cleaning air, but do they dry out the air and lead to other health problems? For me, dry air is mostly just a comfort issue. But for some people,...

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Four Steps To Choosing The Best Air Purifier

“What’s the best air purifier on the market?” It’s a question that many of us might ask. There are thousands of air purifier models to choose from, so how can you find the best air purifier that’s...

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HEPA Longevity Test: Day 200

One of the biggest questions when I started doing the DIY was HEPA lifespan–how long do the HEPAs last? Rather than just give people a nice-sounding answer, I wanted to see what the data says, so Gus...

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Why are Air Purifiers so Expensive?

I thought about why air purifiers cost a lot because I was living in Beijing when the (first) “airpocalypse” struck. Here’s what it looked like: The High Price of Air Purifiers I went out to buy an air...

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Why Air Purifier Pre-Filters May Be More Harm than Good

Most purifiers on the market come with a pre-filter. That would make one think that pre-filters must be a good thing, right?   However, most purifier companies also love to selling people 6-stage...

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Can HEPA Filters and Air Purifiers Remove COVID-19?

Data shows face masks can protect you from COVID-19, but how about air purifiers? Can an air purifier with HEPA filters remove COVID-19 and other viruses? Can HEPA Filters Remove Viruses Such as...

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What Are HEPA Filters and How Do They Work?

The term “HEPA filter” can be confusing. What does HEPA stand for? What is a HEPA filter made from, and what actually makes it a HEPA filter? What is a HEPA Filter? “HEPA” stands for “high-efficiency...

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Best Air Purifier for COVID-19 | Best Purifier Guide 2021

Air purifiers have become an obvious for those looking to protect themselves from the COVID-19 coronavirus. That’s not surprising. Data shows that air purifiers can filter COVID-19. In fact, the EPA...

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Why Are HEPA Filters so Expensive?

The costs of replacement HEPA filters for air purifiers can quickly add up. A quick search on Amazon reveals some HEPA filters that cost over a hundreds of dollars. Should HEPA filters cost this much?...

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Simple Trick to Reduce Pollen and Seasonal Allergy Symptoms

Seasonal allergy symptoms can be difficult to cope with. Symptoms include sneezing, runny nose, and red, watery, and itchy eyes. Fortunately, studies show the use of HEPA filter air purifiers in the...

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CDC Study: HEPA Air Purifiers Reduced COVID-19 Spread in Schools

We previously discussed how HEPA filters are extremely effective at removing virus and COVID-19 sized particles. But data was lacking on how exactly air purifiers affect COVID-19 transmission and virus...

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How to Know When to Change Your Air Purifier’s HEPA Filter?

When to change your HEPA filter can be a difficult question to answer. I’ve always questioned those numbers that air purifier companies give you. Where do those HEPA filter replacement numbers come...

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Using an Air Monitor to Determine When to Replace a HEPA Filter

It can be difficult to tell when to replace a HEPA filter. Should one go by looks? Probably not. Going by looks turns out to be a poor measure of filter efficiency. The best way to test a HEPA filter’s...

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Best Air Purifiers for Wildfire Smoke

Air purifiers are key to protecting yourself from wildfire smoke in your home. But with the number of purifiers on the market, it can be confusing to know which are the best air purifiers for wildfire...

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How Do UV Light Air Purifiers Work and Can They Kill Viruses?

Air purifiers with UV lights are becoming more and more popular to disinfect viruses such as COVID-19 and the delta variant. Also called ‘sterilization lamps’, they are advertised to kill 99.9% of...

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How to Choose an Air Purifier [2022 Air Purifier Buying Guide]

Choosing which air purifier to buy can seem complicated. With thousands of air purifier models to choose from, how to choose? In this 2022 air purifier buying guide, we take you through the four steps...

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EN1822 HEPA Filter Standard: Everything You Need to Know

Wondering what the EN1822 HEPA filter standard is, and when to use it? This article covers the scope and history of the EN1822 standard, the different EN1822 filter classifications, and the test...

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Can Air Purifiers Remove Asbestos From the Air?

Asbestos are extremely dangerous and cause cancer. Can air purifiers remove asbestos from the air and make your home safer? To know how effective air purifiers are at removing asbestos from the air, we...

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