5 Best Air Purifier for Large Rooms

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Air purifiers are becoming an essential part of our lives. They make our air clean and free of pollutants, while also keeping the inside air fresh.

However, there’s a flood of options out there at the moment. And choosing the right air purifier can be a challenge. First of all, you have to choose between what filtering media the purifier uses. Most of them use HEPA filters or activated carbon filters. Though, you do find many purifiers that use ionizers or UV lights to get rid of microbes.

There’s a couple of things to consider before we head onto the list, though. Take a look at some of these factors that will allow you to make a better decision.

  • How big of an area you want to cover with the purifier?
  • How much you are willing to spend on one?
  • What type of filtration do you prefer to use?
  • What size do you want the purifier to be?
  • Do you prefer power over silence, or are you looking for a mix of both?

Best Air Purifiers for Over 500 Sq. Ft. Rooms

Here, we’ll take a look at the purifiers for the largest rooms. We think that these purifiers are the absolute best that your money can buy at the moment.

Without further a-do, let’s dive into the list.

1. Coway Airmega 300 Smart Air Purifier

The Coway Airmega is designed specifically for larger rooms. To start with, there are two different versions to choose from: the 1560 sq. ft., and 1256 sq. ft. one.

It has a True HEPA filter that’s capable of removing 99.7% of all airborne pollutants. This filter is powerful enough to purify even the largest of rooms.

In addition, it clears 99% of all organic compounds and chemicals, such as NH3 and CH3CHO. This makes it a great option for areas where the pollution is very high.

The True HEPA filter is combined with the activated carbon filter, and they make a combination – together, they form the Max2 filter, which takes care of air purification as well as odors and weird smells. This filter can be removed as a complete entity, and you’ll need to purchase one after a few months.

The pre-filter that’s located prior to the Max2 filter is permanent and washable, meaning that you’ll be able to use it again after some time; wash it, and re-use it. This filter will remove the larger particles from the air.

This device also features a few smart design options. There are five fan modes, letting you choose between Smart, Sleep, Low, Medium, and High. The lower speeds are aimed for silence, while the higher speeds are better for performance.

It’s a very complete package and good value for money. It also won’t consume too much energy, as it’s Energy Start certified.


  • True HEPA filter combined with the activated carbon filter removes 99.7% of all pollutants.
  • There are 5 fan speeds allowing you to choose between silence and performance.
  • Energy-efficient.
  • A very complete package.


  • Can be noisy at higher fan speeds.


2. RabbitAir MinusA2

First of all, we need to mention the unique design of this product. This is one of those products that combine the performance with the style.

It’s a sleek, elegant purifier, and it’s so thin you will start wondering just how they fit that performance into the purifier.

You can easily mount it on the wall and use it to cover large rooms. But this product is much more than just a stylish option. It has a lot going for it under the hood, as well.

There are six different filtration media, combined into a MinusA2 filter. It has a BioGS HEPA filter, which is similar to the usual True HEPA filters, just that it’s more biological with energy use.

Within the filtering medium, there is also the Germ defense filter, as well as Pet allergy filter, Toxin absorber filter, and the Odor remover filter. So you get a complete performance from these five filtering media.

To complete the performance, there’s a pre-filter installed prior to the main filter. You also have the choice to use the negative ion filter or not.

This purifier can cover rooms of up to 815 sq. ft. It’s also ultra-quiet, especially at lower fan speeds – up to 20 DB at most. And the stylish design is just the cherry on the cake.


  • Elegant and stylish, unique design.
  • It has six stages of filtration.
  • 815 sq. ft. of room coverage.


  • The user input is sometimes not obeyed.


3. Alen BreatheSmart FLEX

The next air purifier is all about the performance. This Alen BreatheSmart FLEX purifier can cover up to 700 sq. ft. every 30 minutes, which means that it’ll cover your large rooms in just a couple of minutes. Additionally, it has an attractive, modern design, meaning that it will fit in most of your rooms.

But we must also mention the performance – it has a True HEPA filter, which is geared for performance. This filter is capable of covering even the largest of rooms.

Of course, you’ll need to replace this filter from time to time – usually, it’s every 3-5 months, although it can last longer if you take care of the purifier.

Additionally, the purifier leaves you full control of the fan speeds. There are four fan speeds: at the lowest speed, it’s all about lowering the noise levels.

The highest fan speed is the Turbo speed, which lets you get the absolute most out of the device. But even at the Turbo speed, there’s this feature called the “pink noise”, which means that it will sound like rain is falling.

For what you’re getting, the price tag is more than justified. You get a good filtration quality, decent fan speed options, and silent operation when you need it. Additionally, the design is modern and sleek, allowing you to use this device in most of your rooms.


  • Sleek, elegant design.
  • Four fan speeds letting you choose between performance and silence.
  • True HEPA filter capable of covering the largest of rooms.
  • Low energy consumption.


  • Can create quite a lot of noise at the Turbo speed.


4. Medify MA-40 2.0 Medical Grade Purifier

This purifier is medical grade, which means that the performance is of the highest possible level. It has a Medical Grade H13 HEPA filter, which is even more effective than a True HEPA filter.

It’s capable of removing 99.7% of all particles that are smaller than 0.3 microns – up to 0.03 microns. This makes sure you’re free of all possible bacteria, viruses, and smaller particles.

But this device is geared towards cleaning even the largest rooms in the smallest possible space of time. It’s capable or cleaning up to 1600 sq. ft. in just an hour, and 420 sq. ft. in only 15 minutes. This gives the device a CADR rating of 330. So you’re sure to get a premium level of performance with this air purifier.

But you’ll also get a relatively silent operation, and that’s mainly thanks to its 4 fan speeds that you can choose from. There are some additional functions that make the use of the purifier simple.

These include the 8 hours timer, the night mode function which allows you to use the device silently at night, and the ionizer function that you can turn on or off.

You’ll also get a lifetime warranty with this product. We think that this product is worth every cent, despite a relatively steep asking price.


  • Medical grade air purifier
  • Capable or cleaning even the largest of rooms in a short space of time.
  • 4 fan speeds and additional helpful functions.
  • Lifetime warranty.


  • Slightly steeper price.


5. Whirlpool WPPRO2000M Whispure

Another highly effective air purifier which will make sure your air gets cleaned effectively. To start with, we must mention that it cleans about 500 sq. ft. of space in a room. Its CADR rating is 328, which is not too far from even the most powerful air purifiers out there.

That’s mainly thanks to its powerful filters inside the device. The True HEPA filter removes 99.97% of all airborne pollutants, which includes pollen, dander, dust, and even the smaller particles.

It will keep your air clean even across the largest of rooms in your home. In addition, it will effectively remove all the odors from your house, making sure your air quality will be impeccable.

But not only that, you’ll also get a relatively silent type of operation. The Whispure technology makes sure that even on the higher performance settings, you’ll be able to enjoy a purifier that will operate silently. In the sleep mode, the purifier will work silently and at the same time, it will save you plenty of money.

There are 3 modes to choose from: low, medium, and high. At the lowest mode of operation, the filters will work efficiently while at the same time, quietly. At the highest level, the purifier will try to do everything it can to purify your air the best it can.


  • Effective air purifier.
  • Sleek and elegant design.
  • The Whispure feature makes sure the device operates silently.
  • True HEPA filter removes 99.97% of airborne pollutants.


  • Can be loud at the highest mode of operation.


Are Air Purifiers Effective in Large Rooms?

Yes, air purifiers like these we mentioned on our list are geared towards cleaning the air even in the largest of rooms out there. That’s mainly thanks to their powerful filtration media, but also thanks to its design.

In addition, these purifiers are big and powerful enough to be effective over large amounts of space in the least amount of time. All of the purifiers we mentioned on this list are capable of cleaning the air in the largest of rooms. They ensure that thanks to the high-quality build and the quality of the filtering media.

Most of them have a True HEPA filter, which is known to be one of the best filters for larger rooms. A medical-grade HEPA filter can be even better, although these do come at a higher cost.

Which is the Best Air Purifier for a Small Apartment?

If you’re looking for a good air purifier for a small apartment, then all of these purifiers are great. The only thing you need to be mindful of is that you need to keep your doors open so that the purifier is able to clean all of the rooms within your apartment. All of them are high-quality, and they are able to clean a lot in the shortest time spans.

In essence, you can choose every product we listed in this article for the smaller apartments. But we would absolutely recommend you the Conway Airmega 300 purifier for the smaller apartments. That’s because you’re getting a great performance for the money, while also making sure the purifier works silently. Its sleek design also helps.

So you’re really getting the best quality that the money can buy here, even for the smaller apartments.

Where Should Place the Air Purifier in a Large Room?

You should try to place your purifier somewhere where it’s not obstructed, and it can access all the air in the room effectively. That’s usually somewhere where there’s plenty of space. Avoid placing it in a corner, or next to furniture (too closely). In that case, your device won’t be able to access the space and air in your room.

Purifier placement also plays a big role in how effective your purifier can be. Make sure you place it so that it’s able to clean as much air as possible.


So these are the best purifiers we recommend for the larger rooms. What do you think? Hopefully, you’ll be able to choose the right purifier for your needs. There’s plenty of choices out there, but we think these are the best ones at the moment.

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