Top 5 Best Large Room HEPA Air Purifiers (2020 Review)

Do you want to find the best large room HEPA air purifier?

These HEPA air purifiers can filter rooms in the range of 400 to 800 square feet.

In this guide, I will go over...

  • My #1 top pick for the best large room air purifier
  • Why most contain an additional carbon filter
  • Tips on picking the best purifier

Let's get started with this guide!

top best rated large room hepa air purifier reviews

My Overall #1 Rated Pick

top best rated large room hepa air purifier reviews medify air ma-40w
  • Medical grade H13 HEPA filtration (better than true HEPA)
  • Four fan speeds
  • Includes prefilter to extend life of H13 HEPA filter
  • Includes carbon filter to remove odors and VOCs
  • Removes particles down to 0.1 micron

My overall top pick for the best large room HEPA air purifier goes to the Medify Air MA-40W. It has a medical grade H13 HEPA filter which is better than even true HEPA. It will filter down to an amazing 0.1 micron and 99.99% of particulates. It has a tempered glass display, four fan speeds, a sleep mode, and a prefilter and carbon filter.

ImageProduct
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Medify Air
  • Medical Grade
  • Four Speeds
  • Sleep Mode
  • Medical Grade
  • Four Speeds
  • Sleep Mode
View on Amazon
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Alen
  • Light Dimmer
  • Auto Mode
  • True HEPA
  • Light Dimmer
  • Auto Mode
  • True HEPA
View on Amazon
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Honeywell
  • True HEPA
  • Three Speeds
  • 310-sf Rooms
  • True HEPA
  • Three Speeds
  • 310-sf Rooms
View on Amazon
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Oransi
  • Three Stages
  • Auto Mode
  • True HEPA
  • Three Stages
  • Auto Mode
  • True HEPA
View on Amazon
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Hathaspace
  • True HEPA
  • 5 Filter Stages
  • Remote Control
  • True HEPA
  • 5 Filter Stages
  • Remote Control
View on Amazon

Top 5 Best Large Room HEPA Air Purifiers

My top picks for the best large room HEPA air purifiers include multiple levels of air filtration, adjustable fan speed modes, and various additional features. Most of these purifiers have activated carbon filters that can remove odors like smoke and VOCs such as formaldehyde. These air purifiers can filter particles from the air down to 0.3 and 0.1 micron and 99.97% to 99.99% of particulates.

  1. Medify Air MA-40W (Top Pick)

  2. Alen BreatheSmart 45i

  3. Honeywell HPA300

  4. Oransi Max HEPA 

  5. Hathaspace Smart True HEPA  

What Is A Large Room HEPA Air Purifier?

A large room HEPA air purifier is a device that will clean your air for larger rooms in the range of 400 to 800 square feet.

These are larger and more robust air purifiers as compared to the small room and desktop air purifiers. Large room air purifiers can handle entire basements, and not just small bedrooms.

HEPA Filtration

My selection for large room air purifiers all have HEPA filtration.

HEPA is one of the highest quality air filters on the market, and can filter out up to 99.97% of particulates.

HEPA filtration is even more powerful than the filter in home's HVAC system: the furnace filter. This is because a HEPA filter in your furnace would severely restrict air flow and may damage your HVAC system.

These HEPA filters can remove some of the tiniest air pollutants down to 0.3 micron in size. They can filter out mold spores, pet dander, dust, allergens, and other air pollutants.

HEPA filters usually have multiple pleats which gives it an accordian shape. This accordian structure vastly increases its surface area so it can capture more particles.

Read Also: What Are The Best Quiet HEPA Air Purifiers?

top best rated large room hepa air purifier reviews (1)

Carbon Filter

All of these large room air purifiers have multiple stages to their air filtration in addition to the primary HEPA filter.

One of the most common extra filters is an activated carbon (charcoal) filter. The carbon filter is meant to remove odors and volatile organic compounds from the air.

Things like smoke, formaldehyde, and other noxious odors can be filtered out with an activated carbon filter. The charcoal is highly porous and the odor molecules get trapped in these numerous holes in the filter.

Read Also: Where Should I Place My Air Purifier?

What Is The Best Large Room HEPA Air Purifier?

Here are my reviews for the best large room HEPA air purifiers with their pros and cons. Check it out below...

The MA-40W is a medical grade HEPA air purifier that uses H13 HEPA filtration which is even more powerful than true HEPA. H13 HEPA can filter 99.9% of particles down to an amazing 0.1 micron size.

The MA-40W can filter rooms up to 840 square feet, and completely filter the air twice every hour (four times every hour for 420-sf). It includes 4 fan speeds including a sleep mode.

This Medify Air medical grade purifier includes a prefilter and a carbon filter. The prefilter removes larger particles (and extends the life of the HEPA H13) and the carbon filter removes odors like smoke.

  • Uses H13 HEPA (better than true HEPA)
  • 4 fan speeds
  • Prefilter and carbon filter
  • Sleep mode
  • Complaints of noise
  • Poor customer service (filter delivery times)

The BreatheSmart 45i by Alen is a high quality air purifer that can cover large rooms up to 800-sf.

It features a HEPA filter that can catch 99.7% of airborne particles up to a size of 0.3-microns. In addition, the true HEPA filter lasts 3-5 months longer than regular filters.

You can also buy an optional Pure filter for the 45i that contains a compound which can kill germs such as bacteria, mold, and viruses.

You can use this large room air purifier on auto mode which adjusts the fan speed for more effective air purification (also 4 manual speed options). It includes light dimmability as well for better sleep.

  • True HEPA filter for 99.7% of particles
  • Light dimmer
  • Auto fan mode for efficiency
  • Poor customer service
  • Complaints of broken sensor (auto mode)

The Honeywell HPA200 is a great air purifier for large rooms. This purifier by Honeywell can filter rooms up to 310 square feet with 5 total air changes per hour.

It includes a certified true HEPA filter by Honeywell that can remove up to 99.97% of particles up to 3-microns (change every year).

There is also a pre-filter (change every 3 months) that will capture larger particles like dust, lint, hair, and pet dander. This air purifer comes with 3 fan speed settings which includes a turbo setting.

Honeywell is a world renowned brand and is one of the leading companies in the HVAC world.

  • Certified true HEPA filter by Honeywell
  • 3 fan speed settings plus turbo
  • 3-month prefilter to capture hair and lint
  • For rooms up to 310-sf
  • May have initial smell or outgassing

The Oransi air purifier uses HEPA filtration for rooms up to 600 square feet. This air purifier has three stages of air filtration that includes a prefilter, HEPA filter, and an activated carbon filter.

The prefilter removes large particles like hair and dust, while the HEPA removes the smallest particles up to .3 microns, and the carbon filter removes odors and VOCs.

It includes an auto mode that will adjust the fan speed for the amount of pollution in the air. It includes a filter change indicator light so you can stay on top of maintenance.

  • 3 stages of air filtration
  • HEPA filter
  • Auto mode and indicator lights
  • Complaints of noise

The Hathaspace large room air purifier features a 5-in-1 purification system. The main filter is a true HEPA filter that can remove 99.7% of particulates up to 0.3-microns.

It also includes a cellular-activated carbon filter to remove odors, VOCs, and gases. The Hathaspace purifier also has an ionizer to remove the most stubborn odors such as tobacco smoke.

The other filters include a cold-catalyst filter to remove large particles like hair as well as an anti-bacterial filter. This purifier has an auto mode that will automatically adjust the fan speed, and you can control it with a remote.

It also has a remote control so you don't have to get up to change a setting. The Hathaspace purifier has a sleep setting that is ultra quiet and will turn off all the lights.

  • True HEPA filter for 99.7% of particles
  • 5-in-1 air purification system
  • Remote control
  • Ionizer for stubborn smells
  • Complaints of faulty air sensor

My #1 Top Pick: Medify Air MA-40W

My top pick for the best large room air purifier goes to the Medify Air MA-40W. Here's why...

#1. H13 HEPA

The MA-40W uses a medical grade H13 HEPA filter which is more powerful than the standard true HEPA. It will filter particles down to 0.1 micron and catch 99.99% of particulates.

#2. Prefilter & Carbon Filter

It includes a prefilter which catches larger particles like hair and pet dander. The prefilter also will extend the life of the H13 HEPA filter. And the carbon filter will remove odors like smoke and VOCs like formaldehyde.

#3. Fan Speeds

This air purifier includes four fan speeds so you can choose your level (and noise) of air filtration. It also includes a sleep mode so you won't be disturbed.

Read Also: How To Clean An Oreck XL Professional Air Purifier?

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Arie Van Tuijl

Arie Van Tuijl

Arie is the founder of Home Inspector Secrets, an online resource dedicated to helping people understand how homes work. He is a licensed home inspector in two U.S states and owns a residential and commercial inspection company (read his full bio on the About page). To ask Arie a question, please use the comment box at the bottom of the relevant article.

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