Do you have a large space that needs to be ventilated properly? BEST AIR PURIFIER FOR LARGE ROOMS If this is the case, be sure to read the fine print on any air purifier you are considering purchasing. Not all air purifiers are effective in large spaces. Even those that advertise a coverage area of 1,200 square feet or more do not perform as well as they should. That is why we have compiled the following list of the best air purifiers for extra-large rooms that are more than 1200 square feet in size. Considering that only the best large-capacity air purifiers made the top 3, take a look at what we discovered.


The Best Air Purifier for 1200+ Square Feet

Best for Overnight


Alen BreatheSmart 75i

  • 1300+ Sq. Ft. Room Coverage 
  • Very Large Spaces
  • Reduce dust, mold, etc
  • Improve sleep
  • Affordable Price


Best Value


Coway Airmega 300

  • 1,256 sq. ft. Room Coverage
  • Extra Large Rooms
  • Remove bacteria, pollen, etc
  • Reduce allergy/cold symptoms
  • 360 degree humidification


Best Performance

IQAir HealthPro Compact Air Purifier

IQAir HealthPro Compact

  • 1,238 sq. ft. Room Coverage
  • Extra Large Rooms
  • Remove dust, germs, etc
  • Relief from allergies
  • Cough/bronchitis relief


Best Air Purifier for 1200+ sq. ft. Extra Large Rooms & Very Large Spaces

Best for Overnight: Alen BreatheSmart 75i Air Purifier

Alen BreatheSmart 75i Air Purifier

It is the most powerful air purifier in the BreatheSmart lineup, with a coverage area of up to 1,300 square feet, making it the most versatile. However, despite having the greatest room coverage, it only consumes 45watts when in use, making it the second lowest power draw in the BreatheSmart class. It also has the longest filter life, requiring replacement every 12 to 15 months. It is the most expensive. As most air purifier filters need to be replaced every 6 months, this will result in significant savings over time.
The BreatheSmart 75i is available in eight different colour options, including the standard black and white, as well as faux-wood finishes in maple, oak, and rosewood, among other options.

Using a True HEPA H13 filter, this will capture 99.99 percent of all contaminants larger than.1 microns, which is an extremely high rate. Dust, dander, allergens, pet fur, and a variety of odours are all examples of what can be found here. This model includes a laser Smart Sensor that detects airborne particles and a colour changing panel that automatically adjusts to show you the air quality in your home, providing you with greater assurance that it is cleaning your air. Each level has a different colour and will be displayed in a range from Blue to Red.

The power to clean a 1300 square foot room every 30 minutes would be expected to be quite loud, as would the noise generated by this. It does, however, have a very quiet fan, with noise levels ranging from 25 dB to 49 dB. In addition to being ideal for overnight use, the low fan speed generates “pink noise,” which has been shown to aid in the promotion of more restful sleep.

  • Cleans up to 1300 square feet
  • Very quiet at only 25dB
  • Great for overnight use, fan sound is “pink noise” which promotes restful sleep
  • Only draws 45watts
  • Filters last 12-15 months
  • 8 color options
  • Has an Air-Quality Sensor
  • Does not have a remote control or phone app

The Results of the Trial

We put the BreatheSmart 75i through its paces in a three-car garage that smelled like must and mildew. There was a noticeable difference in the smell after it had been left running overnight. We played it at the slowest possible speed, and the sound faded quickly into the background. The use of this would be excellent for overnight use in a bedroom. Aside from providing peace of mind, having the air-quality sensor was also beneficial.

Best Value: Coway Airmega 300 Air Purifier

Coway Airmega 300 Air Purifier

In spite of its small size, this air purifier packs a powerful 3-stage filtration system that provides the most powerful cleaning power of any air purifier on our list. This air purifier is capable of filtering a room up to 1,256 square feet and will remove up to 99.999 percent of airborne particles as small as.01 microns in size. That is ten times smaller than the majority of air purifiers you will find on the market.

They are able to achieve such remarkable results by combining the Coway Green True HELA filter with the Coway Activated Carbon filter. The HEPA filter removes harmful gases, volatile organic compounds (VOCs), dust, pet hair, dander, allergens, mould, viruses, and bacteria from the air you breathe.

The use of a clean filter is ensured by the presence of an air filter indicator that indicates when the filter should be replaced. Coway Airmega 300 also includes real-time air quality monitoring, which is accomplished through the use of a pollution sensor and a 4-color system, allowing you to easily determine the level of air pollution in your home.

The Auto-Mode feature will automatically adjust the fan speed in accordance with the current air quality in the room, saving you time and money. This will help you save money on operating costs while also extending the life of your filters. Furthermore, a sleep mode reduces the fan speed to its lowest setting, filtering the air without disturbing you while you’re trying to sleep.

The noise level produced by this device is comparable to that of the other devices on our list, ranging between 22dB and 52dB on average, depending on fan speed.

The Results of the Trial

When we were hit by two consecutive wildfires in our area in the span of two months, we decided it was time to invest in an air purifier. The room in which we left the Coway Airmega was 800 square feet in size and was completely closed off from the rest of the house. Wildfire smoke permeated the air, and after running the machine on high for an hour, the smell was completely gone. Using auto-mode, we can now let the device decide what the best fan setting is for the situation. Normally, it stays between a 2 and a 3, with our air quality always being in the blue, unless we leave the front door open for an extended period of time.

  • Warranty covers malfunctions for a year and electrical problems for 5 years
  • Has an air-quality sensor
  • Auto-mode and sleep-mode reduce costs with automatic fan settings
  • Removes air contaminants as small as .001 microns
  • This model is not WI-FI or phone app enabled and does not have a remote
  • Replacement filters are expensive

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Best Performance: IQAir HealthPro Compact Air Purifier

IQAir HealthPro Compact Air Purifier

A more compact version of the HealthPro Plus, the IQAir HealthPro Compact is an excellent addition to our list of compact air purifiers. With a weight of only 25 pounds and dimensions of 24 inches tall by 16 inches wide, this is a device that is particularly useful for those who have a limited amount of available workspace. Although it is smaller than the HealthPro Plus, it uses the same HyperHEPA filter, with the exception of the odour and smoke trapping V5 Cell filter, which is not included in the compact version.

Using the IQAir exclusive HyperHEPA filter, this will trap ultra fine particles as small as.003 microns, allowing you to breathe cleaner air. Pet hair and dander, mould, allergens, dust, bacteria, and viruses are all covered under this policy. This is an excellent device for people who suffer from asthma and allergies, and it has received numerous 5-star reviews from people who claim that it has completely alleviated their symptoms.

While most air purifiers use a standard HEPA filter, the IQAir models use a HyperHEPA filter, which performs 100 times better than conventional HEPA filters. This model, which is known to promote better quality sleep, less snoring, and cleaner air, is slightly less expensive than the HealthPro Plus. As a result of its small size, it is easier to move around the house, especially when using the integrated handle.

The Results of the Trial

Anyone suffering from allergies will find themselves becoming best friends with the IQAir HealthPro Compact. This air purifier makes a remarkable difference in how you feel when you’re outside and how you feel when you’re in a room with this air purifier. Within a few hours, we were all able to take a deep breath again, with no itchy eyes or sneezing. It was not difficult to move it around the house due to its light weight and compact design. If it weren’t for the fact that it’s such an expensive (but absolutely worthwhile) investment, we’d buy two, one for each floor. Because it is quite noisy at higher fan speeds, we allowed it to run for a few hours at its maximum speed before switching to fan levels 1 and 3. When the noise reaches these levels, it simply fades into the background and ceases to be noticeable.

  • Lighter and smaller
  • The frame is very well built
  • Powerful fan
  • Expensive filter replacements
  • Higher fan levels are too loud for prolonged use

Honeywell air purifier – amazon air purifier

The Honeywell HPA300 is a powerful air conditioner that is well-suited for large spaces. Its height is 22 inches, and its width is 21 inches. It weighs 24 pounds and measures 22 inches in height and width. Dust and pollen are removed from the air through a two-stage filtration process. This process makes use of an activated carbon filter (pre-filter) as well as three true HEPA filters to filter the air.

Because of this, it is capable of capturing up to 99.97 percent of pollutants in the air that are larger than 0.3 microns in size. A user interface consisting of five buttons and two LED indicators, one for pre-filter replacement and the other for HEPA filter replacement, is included as is common with other purifiers in this price range.

It has three different fan settings: Allergen, Clean, and Germ. Depending on the mode, the power consumption ranges from 40 to 130 watts on average. According to the manufacturer, it can comfortably cover 465 square feet of floor space.

Molekule air purifier

Despite the fact that the Molekule air purifier is housed in a cylindrical silver body that is made of aluminium, making it lightweight and portable, its power is not diminished as a result. It has an 8.25-inch diameter, a height of 23 inches, and a weight of 18 pounds. It has an 8.25-inch diameter and a height of 23 inches.

A touch screen display that can be used to modify the unit’s settings and modes by selecting from Auto, Boost, Silent, and Dark Modes, as well as other options. An innovative dual-filtration system, consisting of the small Molekule Pre-Filter and the accompanying PECO (photo electrochemical oxidation) filter, ensures air cleaning down to 0.3 microns in size.

It has been designed with Wi-Fi connectivity in order to allow the user to control it from a distance. Through the use of a smartphone app, this feature allows for greater interactivity with the unit. Maintenance is straightforward, requiring only the replacement of the PECO filter every two years. Additionally, it is recommended that the Pre-filter be replaced on a quarterly basis. This does not necessitate a great deal of technical expertise. This unit is well suited for use in large rooms, as it has the capability of cleaning areas up to 600 square feet in size.

Levoit air purifier

The Levoit air purifier (Levoit p350) has dimensions of 8.8 by 8.8 by 14.2 inches and employs a three-stage filtration process consisting of a Pre-filter, a true HEPA filter, and an activated carbon filter. The Levoit air purifier (Levoit p350) is available in black or white. It even includes a pet-proofing feature.

Because of this, it is capable of cleaning up to 99.97 percent of airborne particles larger than 0.3 microns in size. According to the manufacturer, this unit can be used in rooms with a total capacity of up to 215 square feet. It has a rated power of 45 watts and is exceptionally quiet for its size. It is equipped with a single LED indicator for filter replacement as well as a user-interactive interface. The unit even has a sleep mode that dims the lights during the night, as well as a timer and three fan speeds to go along with it.

Winix air purifier

With a recommended room area of 360 square feet, the Winix Air Purifier is quite capable of cleaning a significant amount of space. With an air quality indicator light and two operating modes (Auto Mode and Sleep Mode), it is a convenient addition to any home.

It is also equipped with a Plasma Wave, which can be activated to eliminate odours and odor-causing odours from the environment. Four fan speeds are available, as well as an LED indicator for HEPA filter replacement and three LED lights for the timer, all of which can be customised. Using a three-stage filtration system comprised of a carbon filter, a True HEPA filter, and Plasma Wave Technology, this unit is able to provide cleaner air.

Because of its low power consumption of 70 watts, it has earned the Energy Star certification.. 15.4 pounds and 15 by 8.2 by 23.6 inches are the dimensions of this unit. Approximately 99.93 percent of particles larger than 0.3 microns are claimed to be removed by this unit.

Extra Large Room Air Purifier Comparison

Air PurifierRoom Coverage
Alen BreatheSmart 75i1300 sq. ft.
Coway Airmega 3001256 sq. ft.
IQAir HealthPro Compact1238 sq. ft.

What to Look for in an air purifier for extra-large rooms (1200+ Square feet)

Once again, not all air purifiers are suitable for use in large spaces. Take a look at the following list of features to look for when shopping for a large-capacity air purifier to help you make your decision:

  1. Air moving capability of at least 100CFM per 250 square feet of space
  2. 1,200+ square foot air purification rating
  3. True HEPA filter

The Advantages of Using an Air Purifier in Very Large Spaces Over 1200 Square Feet
Large rooms can accumulate a great deal of dander, dust, allergens, germs, and viruses, among other things. It is recommended that you use a high-capacity purifier that has at least one true HEPA filter to reduce the health risks posed by these airborne contaminants. If you have pets who spend the majority of their time in a large garage or living room while you are at work every day, this can also help them breathe cleaner air.

Frequently Asked Questions

It is not always the case that size corresponds to capability. Some small purifiers are actually designed to clean large areas of 1,000 square feet or more. Nonetheless, some large purifiers were created to fit into small spaces. Make sure to double-check the specifications before making a purchase.

Make certain that it has at least 6 inches of clearance on all sides from any wall or obstruction before putting it in place. As a result, maximum efficiency and effectiveness will be achieved because airflow will not be restricted.

What is the average time it takes for an air purifier to clean a room?
After only a half hour, the majority of models show a discernible improvement. Nevertheless, some require two hours of continuous operation.

Words of Concluding Expression

The bottom line is that large rooms necessitate the use of air purifiers with high capacity. There isn’t any getting around it. However, if you require clean air for a large area, any of the models listed above are excellent options. It is a worthwhile investment in the health and well-being of you and your family members. If you are a college student living in a dorm, you should look into getting an air purifier for dorm rooms today!

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