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The Best Air Purifiers For Over 1000 sq ft (big rooms) in 2022

Choosing the correct air purifier can be a challenging task. Not everyone has the same needs, which means that not all air purifiers are suitable for all people. In this post, I am going to list and specifically focus on the best air purifiers for over 1000 square feet (sq ft). I have compiled and analyzed many models, narrowing them down to four. There are quite a few air purifiers for big rooms or large spaces on the market, but these 4 currently stand out. Just because an air purifier states that it is usable for extra-large spaces, it does not automatically mean that it is a good device. That being said, here are my top picks for the best air purifiers for over 1000 sq ft (square feet):

  • Medify Air MA-112 V2.0 – biggest room coverage, overall #1 recommendation
  • Alen BreatheSmart Classic – best air filtration performance
  • Hathaspace Smart True HEPA Air Purifier 2.0 – budget pick
  • Green Air Encorealternative budget pick (cheapest)

I have picked 3 different winners because they all fulfill different needs. I listed two budged options since the Green Air Encore can be used for exactly 1000 sq ft, while Hathaspace can go up to 1500+ sq ft – in case 1000 is not enough for you. Check out the comparison table below to see the difference between these four air purifiers for 1000+ square feet.

Room coverage 


Power consumption

Price & availability

Medify Air MA-112 V2.0

2500 sq ft


 95 W

Alen BreatheSmart Classic

1100 sq ft


105 W

Hathaspace Smart True HEPA Air Purifier 2.0

1500 sq ft


100 W

Green Air Encore

1000 sq ft


58 W

There are many different aspects and product specifications I consider when comparing air purifiers. In the graph above I have only chosen to show only the most relevant ones, specifically for large room air purifiers. That being said, let us take a closer look at each one of these models.

Biggest room coverage: Medify Air MA-112 V2.0


✓ Super high CADR rating of 950
✓ Can cover up to 3700 square feet
✓ Dual H13 top tier HEPA filtration system
✓ Modern touch screen panel
✓ Optional ionizer
✓ 4 fan speeds
✓ Sleep mode
✓ Child lock
✓ Hidden wheels for easy transportation
✓ Effective against dust, allergens, mold, smoke & cooking odors, allergies, bacteria


Product dimension: 28 x 16 x 15 inches
Weight: 32 pounds
Power Consumption: 95 Watts
Certifications: CARB, ETL & Energy Star certified

While having the biggest room coverage on the list, Medify Air MA-112 V2.0 is also my recommended pick for the overall best air purifier for over 1000+ square feet. It has a staggering CADR rating of 950, which is at the very top for commercial air purifiers. This high CADR rating enables it to purify the air in rooms even as large as 3700 sq ft, in only 1 hour. The smaller size of the room/area, the faster it will clean the air. To give you some estimations: it can clean a room of 2500 sq ft in half an hour (30 minutes) and needs only 15 minutes to clean a 1250 sq ft area. You will have to look really find to find any comparable air purifiers on the market in this aspect.

Modify Air MA-112 V2.0 uses a top-tier, medical-grade H13 HEPA filter which can remove up to 99,99% of harmful air pollutants as small as 0.1 microns. Otherwise, it uses a pretty standard main 3-stage filtration system that consists of a pre-filter, HEPA filter, and carbon activated filter for odors. What is unique about this device is that it uses two sets of these filters – one on the left side and one on the right side. This doubles the filtration power and also enables more air intake. You also get a 4th filtration layer in the form of an optional air ionizer. The device uses DC Brushless motors instead of the classical AC motors (which are quite noisy). Noise levels reach up to 70 dB on maximum speed and decrease as you lower the fan speed.

The Control panel is a touch-screen type and offers 4 different fan speeds, timer function (1h, 2h, 4h, 8h), sleep mode, child lock, and a filter replacement indicator. You can also find an air ionizer button on the control panel, which can be switched on or off. All in all, a pretty standard control panel that offers some customization. Filters need to be replaced twice a year.

Medify Air MA-112 V2.0 Pros & Cons

  • Huge fan power
  • Amazing CADR rating
  • Great performance
  • Lifetime warranty
  • Noisy at highest fan speed
  • Filters do not last very long

Latest price and availability of Medify Air MA-112 V2.0:

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Best Air Filtration Performance: Alen BreatheSmart Classic


✓ CADR rating of 300
✓ Can cover up to 1100 square feet
✓ 4 different filter types to choose from
✓ Colorful control panel
✓ Optional air ionizer function
✓ 4 fan speeds
✓ Automatic mode
✓ Timer function
✓ Built-in air quality sensor
✓ Effective against allergies, dust, chemicals, VOCs, bacteria, mold, smoke


Product dimension: 10 x 17.75 x 26.75 inches
Weight: 21 pounds
Power Consumption: 105 Watts
Certifications: CARB, Energy Star

I chose the Alen BreatheSmart Classic as the top performer regarding the air cleaning capabilities for large rooms of 1000+ sq ft. It comes with a more advanced 3-stage filtration system – a standard pre-filter for capturing dust and other biggest particles, an advanced HEPA filter, and an air ionizer. Based on your needs, you can actually select between 4 different HEPA filter types – HEPA pure, HEPA silver, HEPA fresh plus, and HEPA odor cell. Out of all of these, the HEPA silver offers the best air cleaning capabilities and harmful particle removal. Lastly, there is an optional air ionizer function that releases negative ions in the air, trapping only the smallest air pollutants that HEPA filters left behind.

This powerful and very flexible air cleaning performance is what pushed the Alen BreatheSmart Classic to the front row. You can cover large rooms of up to 1100 sq ft every 30 minutes with this model. The CADR rating of 300 cfm is quite low, but still beats most top-end and more expensive air purifiers currently on the market. The fans that push the air out are surprisingly quiet due to the Advanced WhisperMax technology. Noise levels range from around 41 dB (decibels) on the lowest settings, to 56 dB on the highest fan speed. These are very low (quiet) numbers for such a powerful air purifier.

The control panel is very modern-looking and offers you the following settings: ionization on/off button, filter replacement indicator, fan speed (4 settings), and an automatic mode. Alen BreatheSmart Classic also includes an air quality sensor that changes colors based on how clean the air in your room currently is. Red color indicates bad air quality and blue color indicates clean air, with orange being in the middle.

Alen BreatheSmart Classic Pros & Cons

  • Customizable filters
  • Quiet
  • Lifetime warranty
  • Ozone-free ionizer
  • Costly replacement filter
  • Relatively low CADR

Latest price and availability of Alen BreatheSmart Classic:

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Budget pick: Hathaspace Smart True HEPA Air Purifier 2.0


✓ CADR rating of 450
✓ Can cover up to 1500 square feet
✓ 5 stages of filtration
✓ Medical grade H13 HEPA
✓ Air quality sensor with index
✓ Auto mode
✓ Timer function
✓ Ozone-free
✓ Effective against mold, allergens, bacteria, pet dander, dust, VOCs, odors


Product dimension: 9 x 16.5 x 27 inches
Weight: 27.9 pounds
Power Consumption: 100 Watts
Certifications: CARB, Energy Star, ETL

Hathaspace Smart True HEPA Air Purifier 2.0 is a great example of a quality budget-friendly air purifier. It has a powerful 5-stage filtration system that consists of two pre-filters, an HEPA filter, an Activated carbon filter, and a cold catalyst filter. What is unique here is that you actually get two different types of pre-filter: a propylene filter that increases HEPA filter’s lifespan, and a standard washable pre-filter for dust and pet hair. The HEPA filter is type H13, which is top tier and very effective at air cleaning. The last stage of filtration is the cold catalyst filter which targets VOCs and chemicals. All in all, a very solid air filtration system.

Hathaspace Smart True HEPA Air Purifier 2.0 can be used up for rooms of up to 1500. This is a lot, considering how much cheaper this unit is compared to similar air purifiers. CADR rating is listed at 450, which is a very good number for effective air cleaning in large rooms and spaces over 1000 square feet. The device uses a DC motor to power its fans and has a noise level range between 30 dB (min)- 60 dB (max). The lowest fan setting is surprisingly quiet and actually makes it possible to use this air purifier in the bedroom, without risking the noise disturbing your sleep.

The control panel is touch-screen and has a very basic, yet modern layout. You can adjust the fan speed setting, select a timer, switch over to automatic or sleep mode, and turn on/off the led lights. Hathaspace Smart True HEPA Air Purifier 2.0 also comes with a built-in air quality sensor that actually displays the air quality index in numbers, found on the control panel. 

Hathaspace Smart True HEPA Air Purifier 2.0 Pros & Cons

  • Great performance for the low cost
  • Good CADR rating
  • No ozone
  • Noisy on max fan speed
  • High power consumption

Latest price and availability of Hathaspace Smart True HEPA Air Purifier 2.0:

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Alternative budget pick: Green Air Encore


✓ CADR rating of 250
✓ Can cover up to 1000 square feet
✓ 4-stage filtration system
✓ True HEPA filter
✓ Air quality sensor 
✓ 4 operating modes
✓ IonCluster Technology
✓ Effective against mold, allergens, pet dander, dust, some VOCs, odors, microorganisma


Product dimension: 25 x 7.5 x 14 inches
Weight: 16 pounds
Power Consumption: 58 Watts
Certifications: waiting to get CARB approved

I included the Green Air Encore as an alternative budget pick for the best air purifier for over 1000 sq ft. It has a very futuristic design and comes with some solid specifications. Similar to other air purifiers on this list, it uses a standard 3-stage filtration system with an additional IonCluster technology as the 4th air purification layer. IonCluster technology basically means a patented negative ion generator (also called air ionizer) that specializes in the removal of bacteria, viruses, and other microorganisms. Overall, this combination offers a much better air cleaning effectiveness in comparison to a simple HEPA + carbon filter. The pre-filter is washable, other filters need to be changed once every 6-12 months.

CADR rating for the Green Air Encore is 250 and is enough to clean the rooms of up to 1000 sq ft. While this is the lowest CADR on this list, it is still really great if we take the price tag into consideration. Power consumption is only 58 W, which is almost twice as less as other air purifiers on this list. This is a surprisingly low number considering the fan power needed for pushing enough clean air to cover 1000 square feet. In addition to that, the fan speed noise is the lowest one on this list as well – only 23 dB on the slowest fan setting. There is no official information about the maximum fan speed noise, but I would estimate it around 52 dB.

Green Air Encore air purifier comes with four different operating modes: fan, night, auto, and silent. These offer you some customization and can be adjusted based on your needs and current air quality situation. You get a very futuristic-looking air quality sensor for dust and odors, which uses 4 different colors to let you know the status of your indoor air quality, in real-time.

Green Air Encore Pros & Cons

  • Very low price for a large room air purifier
  • Air ionizer does not produce ozone
  • Low power consumption
  • Quiet
  • Limited effectiveness over 1000 sq ft
  • HEPA filter could be better

Latest price and availability of Green Air Encore:

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Best Air Purifiers For Over 1000 sq ft – Conclusion

As you can see, all of these air purifiers are suitable for very large spaces or big rooms, yet are quite different from each other. I have already given my recommendation for each specific category (room coverage, air cleaning effectiveness, budget), so I will not waste time here. However, there is a chance that you are new to air purifiers or still not exactly sure which one out of these three suits you best. If I had to pick just one, my overall recommendation and number one pick would be Medify Air MA-112 V2.0.

I want to shortly touch on the budget choice – you probably noticed that I selected two air purifiers here. This is because there was quite a big price difference, but the Green Air Encore (cheapest) is capped at 1000 square feet. So I wanted to give two choices for a budget air purifier. For any spaces of around 1000 square feet, I would go with Green Air Encore, and I would choose Hathaspace Smart True HEPA Air Purifier 2.0 for anything over 1000 square feet if I had a limited budget.

Finally, I want to answer a very common question regarding large room air purifiers.

What should I look for in an air purifier for large rooms and spaces over 1000 square feet?

Although there are many important aspects that you need to take into consideration when choosing a new air purifier, not all have the same weight. Here is the information that matters the most for big room air purifiers:

CADR rating. CADR is short for clean air delivery rate and basically tells you how effective and quick an air purifier is at cleaning the air. We measure it in cubic feet per minute (cfm), or in m³/hour. A higher CADR rating = more powerful fan speed = faster air cleaning = more room coverage. An air purifier with a 200 CADR rating will clean a 100 sq ft room (example) much faster than an air purifier with a 100 CADR rating. I wrote more on this in a separate post which can be found here.

Power consumption. Large room air purifiers generally need bigger and stronger fans to be effective. These fans need to consume much more energy, so you should always compare this information (power consumption) between different air purifiers. This is a long-term cost that can really add up fast if you are not paying attention to it. Here is where air purifiers with smart mode come in handy, as they automatically adjust the fan speed in real-time (cost-effective).

Noise levels. Fan size and power also affect the noise that the air purifier makes. The most problematic issue here is noise at maximum fan speed, as it can get quite loud. Depending on where you plan to use your large room air purifier, this might be vital information. Always check the noise levels to make sure that it will not bother you later on. I wrote a separate blog post on air purifiers and noise ranges, which you can find here.

And with this, we have reached the end. Thank you for stopping by and taking the time to read my top 4 list of the best air purifiers for 1000+ square feet. I hope it helped you narrow down and ultimately choose the right air purifier for you.