Best Air Purifier for 1000 Square Feet in 2021- Large Room Air Purifiers

Air purifiers play a considerable role in making your lives healthier and cleaner. If you are starting a new chapter of your life, ensuring a healthy environment physically and emotionally will help you lead a long life. It is crucial to make some changes in life for you to have a fresh start. Some might do it emotionally, while others do it physically.

If you’re doing it physically, we suggest an air purifier to keep as a possession. With its air-filtering qualities of introducing fresh air into the environment, you’ll never want to leave your safe place, especially if your safe place is a 1000 sq ft space that you consider as a gym or a lecture hall. Yes, there are air purifiers that can cover an area this big. More space for you to hang out in fresh filtered air.

If you’re a germ-phobe or even someone with OCD, air purifiers will surely be your holy grail. It offers clean, clear air free of allergens and pollutants wandering up in the air, ready to attack anyone. Having an air purifier in such an open space will be helpful for many. The area, the freezer you’ll feel, and you will be relieved of anyone’s germs that are sharing the room with you. Bellow, we have some of the best air purifiers for 1000 square feet in the market that are great at covering an area of 1000 sq ft.

Comparison Table for Best Air Purifiers for 1000 Square Feet in 2021

1 Alen BreatheSmart Classic – Best Air Purifier for 1000 Square FeetAlen
1100 Sq Ft⭐⭐⭐⭐⭐
2 Coway Airmega 400S -Coway
2.Max2 filter
1560 Sq Ft⭐⭐⭐⭐⭐
3 Molekule Pro Professional Air PurifierMolekule
1.PECO filter1000 Sq Ft⭐⭐⭐⭐⭐
4 AZEUS Air purifierAZEUS1.Pre-filter
1080 Sq Ft⭐⭐⭐⭐
5 InvisiClean Aura II Air PurifierInvisiClean
Aura II
2.Activated Carbon
3.True HEPA
5.UV-C light
320 Sq Ft⭐⭐⭐
6 Shark HE601 Air PurifierShark
1.Multi-tier filter
2.HEPA filter
800 Sq Ft⭐⭐⭐⭐

1. Alen BreatheSmart Classic – Best Air Purifier for 1000 Square Feet

1 Alen BreatheSmart Classic – Best Air Purifier for 1000 Square Feet

Alen is a technology brand with a habit of coming up with complicated names to enhance the work underneath it all.

Alen BreatheSmart is precisely like that; it delivers high-quality services with highly equipped features that won’t disappoint you in the least. Based on the reviews, the device has impressed many by its true HEPA filter and affordable price. You’ll know about it more in the details below:


  • Product dimensions are 10 x 17.75 x 26.75 inches
  • Weight is 21 pounds
  • It has a Medical Grade Filtration
  • Has an H13 True HEPA for 1100 Sqft coverage area
  • Power consumption is a maximum of 60 Watts
  • Has 12 to 15 months filter life
  • Very quiet with a lifetime warranty
  • The clean air delivery rate is 300
  • It has an air quality sensor light
  • No batteries required


BreatheSmart is the first device in the long list of Allen launched air purifiers that offer customizable colors to intensify the whole look. It has a height of 26.7 inches with a depth of 10 inches. Due to this alone, the air purifier feels smaller than its actual size. The division of the curves, along with the panel stretched out, almost spilling towards the edge, makes up the overall shape. It has a typical top-to-bottom air intake system located behind the panel, leaving it looking pretty primitive for a high-end air purifier.

Filtration system

The air filters and filter types used in the filtration process include the three unique stages of the air purifier cleaning process. Functioning at its center can be 1 to 4 levels of the true HEPA filter to choose from. The first is the HEPA-Pure that filters out 99% of particles like dust, pollen, etc., out of your room. These can be as small as 0.3 airborne microns. Then there’s the HEPA fresh that further enhances the productivity of the first filter by adding the activated carbon filter into the mix. This way, it’ll remove combustible gases and odors from the air; if you want to upgrade to a filter that can diminish the growth of any bacteria and viruses in the air, then HEPA-silver is the best to add to your air purifier. Lastly, there’s the HEPA-odor cell that destroys any incoming odors resting on the surface of the air. It is Allen’s molecular conversion powder that tears down odors of any molecular size.

Room coverage

It is already noted that Allen air purifiers have the total capacity to clean large rooms with impressive efficiency. BreathSmart has a room coverage of 1100 sq ft, with an ACH rating of 2X to 5X that shows it can only clean a room twice in 1 hour. The CADR rating is 300 Dust/ 256 Smoke/ 300 Pollen (cfm) which is a little insufficient but still better than others offering.


Alen hasn’t included the true HEPA filter in the device because of its restricting airflow capabilities; this way, it won’t require a powerful fan to work with. No powerful fan means less noise charging through the device. The technology may be called whisperMax but when checked at the lowest fan speed showed delivery of 41.5 dB, which is library quiet.

  • Personalized color options
  • Covers large room
  • Low noise
  • Lifetime warranty
  • Air filter replacement price is high

Read More: Best Air Purifier in 2022

2. Coway Airmega 400S – Large Room Air Cleaner for Cleaning More Than 1000 Square Footage

2 Coway Airmega 400S -

Will it be a good investment to spend money on a device such as the Coway Airmega 400S?

Over the years, Coway has launched many air purifiers with high-quality features, so it won’t be challenging to put your trust in this flagship. Because despite it all, Coway has never compromised over the performance of its devices, you’ll get the perfect package without sacrificing anything on your own. The specifications included in the device are:


  • Product dimensions are 8 x 22.91 x 14.8 inches
  • Weight is 24.7 Pounds
  • Has an electric corded power source
  • It covers almost 1560 Square Feet of floor area
  • It has a combined activated carbon and a True HEPA filter
  • It has a bright-colored LED sensor for air quality
  • It comes with five fan modes with low noise
  • It is Energy Star certified and consumes only 64 watts
  • It has a five years warranty with no batteries required


Coway has never drifted from its typical technological designs. However, that vanished when it launched Airmega 300S; this device may be a similar version of that. Airmega 400S is slightly different from its large body of impressive 22.8 inches height and 14.8 inches width and depth. What sets it apart from the previous air purifier is its innovative technology. It weighs 24.7 lbs and feels heavier than many other air purifiers. The device is difficult to move as it looks thicker as well.

Filtration system

To achieve the best filtration system for a 1000 square feet area, an air purifier needs to have as many filters as possible in it. Airmega 400S come up with a new innovative idea to have an all-in-one filter in its filtration system. The pre-filter removes large particles from the surface; it should be easily washed and dry before re-installation to have a clear pathway for the incoming air. Another is the Max2 filter, which combines the activated carbon filter and true HEPA filter that provides maximum functioning of air filtration. It not only has the probability of reducing 99.97% of particles as minor as a 0.3 micron but can also reduce 99% of toxic compounds and chemicals out of the environment.

Room coverage

Even though it’s evident that the air purifier can handle a room size much more extensive than this, it is stated in the manual that the device covers 1560 sq ft of room. The ACH and CADR rating is 2X TO 4X and 340 Dust/ 350 Smoke/ 400 Pollen (cfm). It is a little insufficient to cover a room of 1560 sq ft and may be a problem for many.


The best feature of the Airmega 400S is its low noise ability; it ranges from 22 dB to 52 dB. It has quite a high power but is still considered one of the quietest air purifiers in the market.

  • Advanced technology
  • Features great smart app
  • Has large room coverage
  • Innovative design
  • Filter replacement is costly


Read More: Best Air Purifier for Classroom


3. Molekule Pro – PECO Air Cleaning System for Germs and Bacteria Best for Large Room

3 Molekule Pro Professional Air Purifier

Launched with great results, Molekule Pro professional air purifier comes with improved features and structure.

Many have sung praises for its efficient design along with its convenient room coverage. Let’s dive into its features and check what all the hype’s about!


  • Product dimensions are 11 x 11 x 23 inches
  • Weight is9 Pounds
  • Operating is through app control method
  • It covers 1000 Square Feet floor area
  • It uses Photo Electrochemical Oxidation nanotechnology for air cleansing
  • Has inbuilt particle sensors
  • It comes with two auto-protect modes and six manual modes
  • Portable and connected through wifi
  • It has an Anodized aluminum body material with a leather handle
  • No batteries required


Since it has significant room coverage, the device needs to be bigger to look like it can. It has a height of 23 inches with a depth and width of 10.3 diameters. The device is what we would call thick to prove its efficient area covering ability. Coming towards its shape and design, the device has a cylindrical shape with anodized aluminum that gives it the superior quality we all run towards. It is a bit heavier, weighs 23 inches, and has an air sensor located at the bottom.

Filtration system

Much emphasis is always put on the filtration process as it’s the feature that either makes or breaks a deal. Molekule Pro professional air purifier has only one PECO filter that is undoubtedly the true HEPA filter. It is a filter that uses UV-C lights to ensure an excellent filtration system that destroys particles at the precise molecular level. This way, no bacteria, viruses, or VOCs would live within the air as long as you are the superhero of an air purifier. However, you need to replace it for maximum performance.

Room coverage

It is stated vividly in the manual that the device can cover an area of 1000 sq ft. The ACH and CADR ratings are 3X to 4X and 180 to 240 cfm.



As it has a powerful fan, the molecule pro professional air purifier has the lowest noise level of 33db. Moving the fan at its highest speed, the purifier’s sound reaches a maximum of 64 dB which can be managed with the intelligent sensor.

  • Innovative PECO technology
  • Fantastic design with sturdy structure
  • Smart sensor
  • A little pricey
  • Noisy at high speed


Read More: Best Plug in Air Purifier


4. AZEUS Air purifier – Large Room Air Purifier under 200

4 AZEUS Air purifier

Air purifiers may be great at filtering out dust particles and toxic chemicals out of your room. Still, you can never be too sure about your safety.

AZUES air purifier won’t give you that headache; it is one of the safest in the market and provides a clean and healthy environment quite quickly. We’ll be going through its features to know more about it.


  • Product dimensions are 8 x 7.1 x 18.3 inches
  • Weight is2 Pounds
  • Operating is through remote control method
  • It covers 1080 Square Feet floor area
  • It has 7-in-1 purifications systems, combined with a HEPA air purifier
  • It has a smart air quality sensor system
  • Very quiet and very low energy consumption, i.e., 60 Watts
  • Has a 360° Aerodynamic Air Intake
  • Comes with a UV-C Sanitizer and Optional Ionizer


The product dimensions were 13.8 x 7.1 x 18.3 inches with a weight of 15.2 pounds. It’s curved around the edges and can be easily carried around anywhere you want.

Filtration system

AZUES doesn’t mess around when it comes to filtering out all the dirt airborne from our room. It has a pre-filter that removes all the large particles such as pet hair, lint, and dust particles present in the air. This filter has three layers that thoroughly capture all that is present within the air. It has the probability of removing 99.97% of particles out of the environment. The air then passes through the anti-bacteria treatment and negative ions to charge the particles within. Then the carbon filter and, lastly, the UV-C light sterilizer. The activated carbon damages any intention that toxic chemicals and smokes might have of embedding deep within the air, followed by the HEPA filter that digs deep to capture all those microparticles hard to catch from the air.

Room coverage

It has the capacity of removing particles from the room up to 5X times in a room of 540 ft. You’ll never have to worry about any germ-infested parts of your room. It will be an easy delivery of air filtration with quick succession.


The device has a relatively low noise level; it has 25 dB at its lowest and 56 dB at its highest. It also has a sleep mode where the device shuts off its LED lights to ensure that you have a night of uninterrupted sleep.

  • It consists of 3 fan speeds
  • Sleep mode
  • Low noise
  • Amazing performance
  • Filter replacement can be complicated


5. InvisiClean Aura II – Best Large Room Air Purifier with 4 Air Filters

5 InvisiClean Aura II Air Purifier

With a reliable and robust service, InvisiClea hits us again with extraordinary air purifiers.

Their aura can see that the products are manufactured with care and attention, incorporating more advanced technology into its mix. The product is what we call a perfectly healthy filter for all. It has exceptional features that include:


  • Product dimensions are 34 x 6.25 x 17.75 inches
  • Weight is65 Pounds
  • Operated through touch control method
  • It covers almost 1276 Square Feet of floor area
  • It utilizes very low EMF radiation and electricity
  • Has a complete Filtration & Germ Disinfection
  • Very quiet and efficient
  • Has a maximum CADR 170 CFM / 289m³/h
  • It is Intertek ETL Listed & CARB approved
  • Has 3 fan speed plus turbo mode
  • No batteries required


InvisiClean has tried something new with its innovative front design of the Aura II air purifier. It is somewhat of an air intake filter with tiny holes formed in a hexagon to collect air directly from the environment through this filter. It’s a front plate that can not only capture pet hair, fur, and dirt but can also be easily cleaned with a vacuum. It has a height of 18 inches, is compact, and has a convenient top to bottom airflow system that intakes air through the front and outlets from the top.

Filtration system

Before purchasing any air purifier, we usually know the quality and quantity of the filters used in the device. Here, InvisiClean Aura uses four stages to clean everything through the filtration system thoroughly. The first is the pre-filter that removes all the particles and unnecessary odors and chemicals from the system, giving a straightforward way for an activated carbon filter that takes care of any harmful gases that might e part of the environment. Then comes the H12 true HEPA filter that clears 99.97% particles out of the system, up to the size of 0.3 microns. The air purifier has add ons like an ionizer to destroy any allergens that trigger allergic reactions. Another is the UV-C light filter that finishes off any lasting bacteria or viruses that might be part of it.

Room coverage

InvisiClean Aura II air purifier can clean the air of a 320 sq ft room. It has an ACH rating of 4X, which means it will change the air every 15 minutes in 1 hour. It also has a CADR rating of 170 cfm.


It has an excellent silent operation with 31 dB as its lowest noise level. This sound can be considered a whisper that is much quieter than we expected for this air purifier.

  • Overall, an effective filtration system
  • Affordable price
  • Looks great as well.
  • It can be a little noisy when in turbo mode

6. Shark HE601 – 6 Fan for Large Area Coverage Best under 400

6 Shark HE601 Air Purifier

Shark might be a name you may have hurt only associated with vacuums.

It is a brand that has introduced a new line of air purifiers, trying out their hand at such devices. As the name suggests, the device consists of 6 fans that have hyper-efficiency with which they deliver outstanding results. It’s one of the most conveniently used air purifiers in the market, giving a clear free path to use them at hand.


  • Product dimensions are 01 x 8.9 x 32.01 inches
  • Weight is 22.2 Pounds
  • Operating is through remote control method
  • Covers 1200 Square Feet floor area
  • It has Six high-speed micro-fans airflow
  • Very fast and very quiet
  • Has sense IQ tracks air quality+ auto-adjusts power+ control panel display
  • It has an Anti-Allergen Multi-Filter along with a HEPA filtration system
  • It has a 2-year warranty
  • No batteries or assembling is required


The device does not have an invasive design; it has the perfect system size that can be put right at the corner of your room. Once it starts working, trust me, you’ll forget about it even being there. It has a contemporary design with touch screen control units positioned right at the top. It keeps you updated about everything, including the filter’s life span, represented in hours.

Filtration process

It has a great filtration process where it is bounded by a significant filter called Anti-Allergen HEPA Multi-filter. The filter is highly effective in capturing particles like pet hair, lint, pollen out of the air. Not only this, the filter works hard at performing multiple tasks like keeping bacteria, viruses, germs, and other pollutants out of the environment. Each filter works hard at providing the best superior air to you. It is made up of the best quality materials to ensure that you breathe nice and clean air.

Another paramount quality that will surely stun you is its ability to provide you the best odor-protected air. It sucks in all the unnecessary toxic and combustible smells out of the system. The results will surely amaze you and keep you wanting more.

Room coverage

Shark HE601 Air Purifier can easily cover an area of 500 to 800 sq ft, making it convey intent to position it in a living room or classroom or even an entire floor. The device glides across the system filtering out air and giving fresh air in return. Even though the CADR ratings aren’t mentioned in the manual, it is pretty apparent that the device is excellent at what it does. It is pretty skilled at trapping everything toxic within the air. Many reviews have stated that it is perfect for pet owners as the cleaning of their furs and pet hairs lying around constitute a significant hassle most pet owners would love to get rid of.


It is stated as quite a silent operation where to produces a deficient level of noise while working.

  • Convenient to use
  • Low noise
  • Modern technology
  • Six efficient fans
  • No child lock
  • No support of the app


Buying Guide: Best Air Purifier for 1000 Square Feet in 2021

The purpose of buying an air purifier may be different, but its features are still the same. This means that a person might want an air purifier with the ability to remove tobacco particles from the air but would still end up with one that can do a lot more than that. Air purifiers have many useful features; you need to find one that effectively fulfills your purpose. There are multiple factors one needs to consider before looking for an air purifier. Some of them are:

True HEPA filter:

We jumped right into the most prominent component of an air purifier. True HEPA purifier is one of the most critical features of an air purifier. It can trap all the dirt and contaminated matter from the air with the probability of targeting 99.97% particles having a size up to 0.3 microns. To see which device consists of such a feature depends upon the name it carries. Only trust those air purifiers with a “true HEPA filter”; this means one truly is the true HEPA filter. These filters can remove particles like allergens, dust particles, bacteria, mold spores, etc. This feature is handy for asthma or other respiratory diseases as particles like these present in the air can be triggers that you don’t need in your life.

Activated carbon filter:

If you’re looking for a filtration system that can indeed wipe out all toxic matter from the environment, then a true HEPA filter won’t be enough. You would need something more significant to assist you in capturing particles more contaminated than those predicted for a true HEPA filter to do. Get a true HEPA filter air purifier that comes with an activated carbon filter. It helps in wiping out any trace of those particles that might have embedded deep within the air. For example, an authentic HEPA would remove the smoke cigarette but won’t remove its smell. That is where an activated carbon filter comes into play; it filters out the remaining smell of the smoke to ensure a full sweep out. Combustible gases and toxic chemicals, odors are all able to be removed through this carbon-activated filter.

This is also exclusively the only filter that can remove Volatile Organic Compounds that can easily be a part of our indoor environment. They can invade through anything, including furniture, paint, cleaning products, etc.


The primary purpose of ionizers is to boost the workings of the air purifiers, increasing their efficiency to work more productively. It helps to knock all the contaminated particles out of the air while increasing the longevity and durability of the filters. There is a whole process that the air purifier goes through; it goes through it by emitting negative ions into the air and charging them onto the particles. The particles then quickly get sucked into the filters, fall, so they’re not in the breathable range or attach to your surroundings. This isn’t a necessary feature in an air purifier but is still helpful for more significant room coverage.

Wifi capabilities:

Any air purifier having this feature is one of the bestsellers in the market. A device having wifi capabilities is something anyone would want on their side. This is due to the number of benefits it comes with; it means you control whatever’s happening in the device without even moving from your place. Just use a remote and command it with ease. Even connecting it to your phone and updates the air quality in your room. You’ll immediately know when to open or close it.

Room coverage:

Always purchase an air purifier that can clean a surface area that you want. An air purifier of 400 sq ft won’t be ideal for room coverage of 1000 sq ft.

It won’t provide the best results will be underpowered throughout the filtration process.


Frequently Asked Questions

Which air purifier covers the most square footage?

The best air purifier covering the most square footage is a decent size dehumidifier with a built-in HEPA filter to remove dust. By using optical sensing to regulate humidity, the device will control the odors generated by pets and cooking and keep the level of harmful particulates in check.

How many square feet can an air purifier cover?

Air purifiers can cover anywhere from 10 to 1500 square feet, depending on the type of unit. So as long as you have a window and room, air purifiers are a great way to purify the air in your surrounding environment!

Is it better to buy a giant air purifier?

A good air purifier separates particulates from the air. The larger the air purifier, the more powerful it will be in its ability to suck up these elements. But there’s a trade-off to make with the size vs. portability. Air purifiers come in multiple sizes and styles, including some models that are small enough to fit into your pocket, others were large and bulky like dehumidifiers or file cabinets, and still others such as space heaters that operate specifically on an ionizing technology (those can sometimes also be used as air cleaners).

How many square feet does the proton pure cover?

They’re designed for rooms no larger than 350 square feet in size and work by improving air circulation while reducing exposure to allergens and pollutants that can make you sick.

How many hours should an air purifier be on?

It all depends on what you desire to achieve and the size of your air purifier. We recommend calibrating the right setting because some people find it noisy while others find it too quiet. The three settings are usually No, Low, and High. When used in conjunction with a good filter such as medical-grade HEPA (High-Efficiency Particulate Air), there’s no need for high volume air purifiers with expensive filters when a small one will do the trick!

Final Verdict: 1000 Square Feet Air Purifier

To conclude here, these are all the best air purifiers for large spaces. Does a giant air purifier cause any damage if placed in a small room? No!. There are no documented negative factors involved with this purchase. Though your electricity bill may become a bit high, your lungs will thank you for the same. This is the most frequently asked question. One other is, can a small air purifier work the same as a large one when placed in a large room? Well, come to think of it, no, it won’t. The purifier won’t be sufficient enough to clean the air. It is crucial to do your research before this purchase. Bigger spaces need giant air purifiers, thus vice versa.

We have outlined the best purifiers out there according to your need. Don’t be hasty with this purchase as it’s not as pocket-friendly. Research, gain knowledge and then purchase. We are here to make shopping easier for you. Go ahead; you know what you want now. Click now and buy your product!

Best Air Purifier for 1000 Square Feet

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