HomeBLOGAir PurifiersTop 5 Best Air Purifiers For 1200 sq ft (Extra Large Rooms) 

Top 5 Best Air Purifiers For 1200 sq ft (Extra Large Rooms) 

Air Purifiers are designed to remove contaminants from the air around your home. When using an air purifier, you should ensure that you purchase one that is adequate for the size of your room. Below we will review the best air purifiers available for 1200 sq ft.

The Best Air Purifiers for 1200 sq ft rooms should be able to remove 99% of all impurities from the air; they should also have an extended warranty period of at least five years, and they should be cheap and easy to maintain.

Best Air Purifiers For 1200 sq ft Reviewed.

Air Purifiers are becoming more popular as people become aware of the harmful effects of indoor air pollution. These are designed to remove such pollutants from the air by filtering them out. 

We will highlight some of the Best Air Purifiers for 1200 sq ft that you can purchase.

1. Best Performance: Air Doctor 5000 Air Purifier 

AirDoctor 5000 Air Purifier

The AirDoctor 5000 is an air purifier device that promises to remove 99.9% airborne pollutants. Customers highly rate it on Amazon, where it currently retails for $199. The medium-sized device comes in white or black and features a 3-stage purification system that can clear the air in rooms up to 2000 square feet. 


  • Room Coverage up to 2000 square feet
  • Ultra Lock Space Technology
  • Auto Sensor With Air Quality Indicator
  • Automatic Mode
  • 24-Hour Timer
  • Stylish Design


  • No Remote

2. Runner-Up: Alen BreatheSmart 75i True-HEPA Air Purifier 

Alen BreatheSmart 75i Air Purifier

The BreatheSmart 75i covers up to 1,100 square feet, and it’s designed for use in large rooms such as living rooms, master bedrooms, and kitchens.

The Alen BreatheSmart 75i True-HEPA Air Purifier is a more affordable option. However, those who want the power and efficiency of a HEPA air purifier don’t want to pay the extra premium for more advanced features. This model does not have these extras, but it still offers excellent performance for its price.


  • Room Coverage up to 1100 square feet
  • Automatic mode that enables to adjust the fan speed
  • Lifetime Warranty
  • HEPA Filters
  • Quiet Operation


  • No Smart Home Connectivity

3. Best Technologies: Okaysou Apollo 818 True-HEPA Air Purifier 

Okaysou Apollo 818 True-HEPA Air Purifier 

It is recommended for rooms up to 1500 square feet and comes with four stages of filtration, including a pre-filter, activated carbon filter, HEPA filter, and UVC light to provide fresh air for your home or office.


  • Works in spaces up to 1500 sq. ft.
  • It weighs 6.6 lbs., very lightweight.
  • Certifications like CE, ETL, CARB
  • Sensitive Auto-Mode
  • Low Energy Consumption
  • Real-Time Air Quality Indicator
  • Intelligent Air Quality Sensor


  • Not made of best quality materials
  • Small motor

4. Best Value For The Money: Coway Airmega 300 Smart Air Purifier 

Coway Airmega 300 True HEPA Air Purifier

The Airmega 300 is equipped with an intelligent onboard sensor that monitors your indoor air quality in real-time. It covers up to 1,256 square feet. It has a simple interface featuring an LED ring indicator that glows green when your air quality is good, orange when it’s moderate, and red when it’s poor.


  • Dual Pre-filter
  • Max2 filter lifetime indicator
  • Built in timer
  • Auto, ECO, and Sleep mode
  • Real time air indicator
  • 5 years warranty from Coway


  • Lacks sleep mode indicator

5. HATHASPACE Smart Air Purifier 2.0 

HATHASPACE Smart Air Purifier 2.0

No more wondering whether or not your family is breathing clean air—the HATHASPACE Smart Air Purifier 2.0 makes it easy to see when it’s time to turn on the cleaner and live better. Ideal for large rooms, it can clean a 1500 square feet room five times in an hour. 


  • Sleek and Modern Design
  • 5 Stage Purification
  • Certified Energy Star
  • Medical Grade H13 HEPA Filter
  • 100% ozone-free, CARB approved, Energy
  • Particle sensor, AQI display


  • Not Wi-Fi or app-enabled
  • The CADR is not AHAM verified

Air Purifiers For 1200 sq ft Buying Guide

Here are some necessary and ideal things to consider when buying an air purifier for 1200 sq ft space:

Size of the Air Purifier: Make sure the unit is big enough to purify the space you want clean. A minor team may not do the job well enough. Look for a cleaner with at least three filters and one that has an adjustable fan speed setting.

Number of Filters: Some air purifiers have more than one filter. You need to decide and choose what type of filter you want before buying a new one. You can find models with HEPA filters or carbon filters to help remove dust mites from your home.

CADR Rating. If you have a space of up to 1,200 square feet, then an air purifier with a CADR rating of between 300 and 400 will be able to cleanse your area effectively. CADR means: Clean Air Delivery Rate measures the amount of filtered air provided by an air cleaner per minute. The higher the CADR, the better the performance of your purifier.

Noise level. It is important because a more expensive unit does not necessarily mean you will get a quieter machine. If the equipment has a higher noise output, it can be hard to hear someone talking from across the room.

Air changes per hour (ACH). The ACH rating on your air purifier measures the number of times it will circulate the air in your room in an hour. The more air changes per hour, the preferred. Ideally, you want a minimum ACH rating of five for this size room.

What To Look For In An Air Purifier For Extra-large Rooms (1200+ Square feet)

Air Purifiers are an excellent way to clean the air in your home. But if you have ample space, you need a different kind of Air Purifier.

So if you’re interested in an air purifier for an extra-large room, here’s what to look for:

  1. High CADR rating
  2. Low noise level
  3. Low energy use
  4. HEPA filter
  5. Good coverage area

Benefits Of a Large Room Air Purifiers

Benefits Of a Large Room Air Purifiers

Air Purifiers are vital to those living with allergies or asthma. But if you have ample space or live in a climate where windows are seldom opened, getting rid of airborne toxins can be challenging. So it’s time to invest in a large room air purifier.

 Here are some benefits of having a large room Air Purifier:

  • You’ll get cleaner air quicker. If you’re in a small space, you can get away with using a smaller air purifier. However, it will take longer for the same level of cleaning to happen in larger areas. A giant room air purifier will clean the space faster so that you can breathe easier sooner.
  • You’ll save money in the long run. While an air purifier may have an upfront cost, it’s bound to be cheaper than medical bills and over-the-counter allergy medications over time. In addition, air purifiers do preventative maintenance on your health, which is always less expensive than corrective treatments after symptoms appear!
  • You’ll have a better sleep. Cleaner air means better sleep for those prone to allergies or asthma attacks at night when they’re trying to rest.

Frequently Asked Questions

How many square feet can an air purifier cover?

Small Air Purifier: Standard for personal spaces and rooms up to 200 square feet. 

Medium Air Purifier: Ideal for rooms between 200 and 400 square feet.

Large Air Purifier: Best for rooms between 400 and 1,500 square feet. 

For example, if you want to use an air purifier in your bedroom with a closed door and windows, it’s essential to know how big that room is and how tall the ceiling is. For example, if the room is 12 (twelve) feet by 15 feet with 8-foot ceilings, you would need an air purifier that covers 240 square feet or more because something like this would allow for enough absorption of all particles in the air.

Will a small air purifier work in a large room?

The answer is yes, but it will depend on how much you’re willing to spend. A large room is defined as anywhere from 300 to 600 square feet. 

The amount of space an air purifier can cover is CADR or Clean Air Delivery Rate. (According to our expert sources, this is the most crucial factor to look for when shopping for an air purifier.) Determining the CADR involves measuring three factors: smoke (which represents dust), pollen, and dust itself.

For example, if an Air Purifier is designed for a 250-square-foot room and your room is 300 square feet, you’ll need a piece of giant equipment. Alternatively, if you have a 300-square-foot room and your device cleans that much space once every four hours, but your room needs cleaning twice every hour, you’ll still need a giant machine.


We recommend AirDoctor 5000 as the most reliable Air Purifier for extra-large rooms as it covers up to 2000sqft. The second ideal unit for your spacious room would be Alen BreatheSmart 75i True-HEPA Air Purifier, for its room coverage is 1100sqft. 

The reality is that expansive rooms need large-capacity air purifiers. If you want clean air for your spacious surroundings, the above list may be your ultimate guide in purchasing one. But, in the end, the bottom line is your priorities and needs.

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