Skip to main content
  • Shop Now
Smart Air Home
  • Home
  • About
    • Why we started Smart Air
    • What on earth does Smart Air do?
    • Meet the clean air team
  • Learn
    • Clean Air Blog
    • Knowledge Base
    • Workshops
  • Impact
    • Smart Air Impact
    • We’re a B-Corp!
  • Smart Air Clean Air Cart
    • Cart
    • My account

Home » HEPA filter

Tag: HEPA filter

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

2021-01-042021-01-04 Paddy Robertson Leave a comment

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 now suggests portable air purifiers be used to improve ventilation to protect against COVID-19:     However, when looking to buy an air purifier, […]

Read More »

Best air purifier protection COVID virus

What Are HEPA Filters and How Do They Work?

2021-01-032021-01-07 Paddy Robertson 8 Comments

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 particulate air” (filter). It sounds complicated, but HEPA air filters are nothing fancy. They were invented back in the […]

Read More »

What is a HEPA filter and how does a HEPA filter work?

Can HEPA Filters and Air Purifiers Capture the Coronavirus?

2021-01-012021-01-06 Paddy Robertson 63 Comments

Data shows face masks can protect you from the coronavirus, but how about air purifiers? How effective are HEPA air filters at capturing the coronavirus? Can HEPA Filters Capture and Remove The Coronavirus? To answer this question, we need to first answer if HEPA filters can capture particles as small as the coronavirus. The COVID-19 […]

Read More »

Size of coronavirus particle pm2.5 and bacteria

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

2020-12-012020-12-01 Paddy Robertson 9 Comments

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 filtration, or no – 7-stage filtration! But the science behind purifiers is surprisingly simple. Two types of filters will protect you against […]

Read More »


Why are Air Purifiers so Expensive?

2020-11-202020-11-20 Thomas Talhelm 2 Comments

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 purifier, and found that the one I wanted cost $2,000! I worked out I’d need two for […]

Read More »

Why are air purifiers so expensive

How Long Does a HEPA Filter Last?

2020-11-042020-11-04 Thomas Talhelm 3 Comments

“How long does a HEPA Filter last?”. “How often should I replace my HEPA Filter”. These are two common questions I got asked when I started teaching people how to build air purifiers. Rather than just give people a nice-sounding answer, I wanted to see what the data says, so Smart Air co-founder Gus has […]

Read More »

HEPA Lifespan Test Filter Air Purifier

Four Steps To Choosing The Best Air Purifier

2020-09-282020-09-29 Thomas Talhelm 1 Comment

“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 right for you? This article covers those steps in a slightly unorthodox way. What’s the Best Air Purifier? Turns […]

Read More »

how to choose best air filter air purifier guide

Do Air Purifiers Dry Out the Air?

2020-09-272020-12-31 Thomas Talhelm 1 Comment

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, dry air can exacerbate health problems like allergies and bronchitis. Do HEPA Filters Lower Humidity? To test […]

Read More »


Three Ways to Improve Indoor Ventilation to Combat COVID-19

2020-09-272020-11-30 Paddy Robertson 1 Comment

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 step in reducing the spread of viruses such as COVID-19. This article covers three simple steps to improve indoor ventilation and lower the risk of […]

Read More »

improve indoor ventilation air purifier combat covid 19 coronavirus

How Long can the Coronavirus Survive on HEPA Filters?

2020-09-102021-01-06 Paddy Robertson 5 Comments

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 viruses stuck in an air purifier’s HEPA filters, that sounds scary. It’s also led to incredible-sounding headlines about how long viruses last. But a […]

Read More »

How long does COVID-19 coronavirus survive on air purifier HEPA filters

Posts navigation

1 2 3 Older posts

Get the latest clean air tips!

Get updates on masks, air purifiers and air quality delivered straight to your inbox.

Smart Air

Smart Air is a social enterprise that creates simple, no-nonsense air purifiers and provides free education to combat the impacts of air pollution.

We have offices in China, India, Philippines, Indonesia, Mongolia, Bangladesh and Thailand.

More about who the heck we are.

Follow Smart Air

Smart Air Facebook
Smart Air Twitter
Smart Air Instagram
Smart Air YouTube

Air Pollution Blog

About Smart Air

Contact Smart Air
Partnerships
Job Opportunities
Why People Trust Smart Air


© Copyright 2021 Smart Air. Made freely available under CC BY-NC-SA-4.0
Change Region | 中文

Clean Air Shop - Select your country or region

Smart Air Official Countries

Mainland China
Mainland China
Smart Air clean air store Taobao China
India
Thailand
Philippines
Mongolia
Bangladesh
Indonesia

Smart Air Distributors

Smart Air store China
Kyrgyzstan, Kazakhstan, Uzbekistan & Turkmenistan
Singapore
Vietnam

Don't see your country?

We ship worldwide!