Air purifiers have become a household necessity, especially in the wake of increasing air pollution and allergen levels. If you’re looking for an air purifier on sale, you’re in the right place. This comprehensive guide will help you understand the importance of air purifiers, how they work, and what to consider when buying one.

Why Do You Need an Air Purifier?

Air purifiers are designed to filter the air in a single room, removing allergens, dust, smoke, and other pollutants. According to the Environmental Protection Agency, the concentration of certain pollutants is often two to five times higher indoors than outdoors. Air purifiers can help improve indoor air quality, especially if you have pets, smoke indoors, or live in an area with high pollution levels.

Top Air Purifiers of 2023

Consumer Reports recommends several models that meet their criteria for safety, performance, value, and reliability. Some of the top models include:

Alen BreatheSmart 75i Pure

The Alen BreatheSmart 75i Pure is a powerful and efficient air purifier designed for large spaces up to 1,300 square feet. With its advanced features and high-performance capabilities, it’s an excellent choice for those looking to improve the air quality in their homes or offices.

Alen BreatheSmart 75i Pure
Alen BreatheSmart 75i Pure

  • Filter Type: Medical-grade H13 HEPA Air Filter
  • Room Size: Up to 1,300 square feet
  • Clean Air Delivery Rate (CADR): 347
  • Noise Level: 25 dBa (lowest speed) to 49 dBa (highest speed)
  • Power Consumption: 1.8 to 45 watts
  • Warranty: Lifetime guarantee with product registration and active air filter subscription

How It Performed

The Alen BreatheSmart 75i Pure has received high praise from professional reviewers and customers alike. In air cleaning performance tests, the unit was able to clear a 705 cubic ft testing room of smoke in just 24 minutes. Its quiet operation is also a standout feature, with noise levels ranging from 25 decibels at its lowest setting to 49 decibels at its highest.

In addition to its impressive performance, the BreatheSmart 75i Pure offers Wi-Fi connectivity, allowing users to monitor air quality history and control the unit remotely through the Alen Air mobile app. The unit also Features a color-coded ring around the power button that indicates the level of particulates in the air, providing real-time feedback on air quality.

Overall, the Alen BreatheSmart 75i Pure is a powerful and efficient air purifier that delivers excellent air cleaning performance and advanced Features, making it a top choice for those looking to improve the air quality in large spaces.


  • Effective in larger spaces, with a coverage area of up to 1,300 square feet
  • Performs exceptionally well in air cleaning tests
  • Quiet operation, producing only 25 decibels at its lowest speed and 49 decibels at its highest
  • Comes with a lifetime guarantee
  • Offers Wi-Fi connectivity for remote monitoring and control


  • High initial purchase price ($749)
  • Large size may dominate the room

The Alen BreatheSmart 75i Pure is a top-performing air purifier that offers powerful air cleaning capabilities, quiet operation, and advanced Features such as Wi-Fi connectivity. While it comes with a high price tag, its performance and lifetime guarantee make it a worthwhile investment for those seeking to improve the air quality in large spaces.

Blueair Blue Pure 211+

The Blueair Blue Pure 211+ is an air purifier designed for larger rooms, with a recommended room size of up to 50 m². It uses a 360-degree air intake, allowing for flexible placement within a room without compromising performance. The device is energy efficient, consuming between 30-61 W, making it 40% more energy-efficient than standard models. There is only one button to operate it, and it also serves as a filter replacement reminder. The Blue Pure 211+ has a clean air delivery rate (CADR) of 590 m³ per hour for pollen, dust, and smoke.

Blueair Blue Pure 211+
Blueair Blue Pure 211+

The device is 20.5 inches tall, 13 inches wide, and 13 inches deep, and weighs 15 lbs. It Features a proprietary particle filter and a carbon gas filter, with a fabric pre-filter that wraps around the exterior of the unit. It has three fan speeds: low, medium, and high.

How It Performed

The Blue Pure 211+ demonstrated high performance in air processing tests. In a 150 sq. ft. test environment, it took 8 minutes to lower room particle concentration from 10,000 particles per cubic ft. down to 1,000 particles per cubic ft., and an additional 27 minutes to lower it from 1,000 particles per cubic ft. down to 100 particles per cubic ft.

The proprietary particle filter effectively removes up to 99% of particles, including allergens, dust, and mold. The carbon filter facilitates gas filtration, removing unwanted gases like odors and VOCs.

The device performed well in noise output tests, measuring at 66.7 dB on its highest fan speed. However, even on its lowest fan speed, it still makes a substantial amount of noise with a measured noise output of 47.2 dB.


  • High CFM: The Blue Pure 211+ has a high clean air delivery rate (CADR), making it effective for larger rooms.
  • Good energy efficiency: The device is 40% more energy-efficient than standard models.
  • Low noise output: Despite its high CFM, the device has a relatively low noise output.
  • Good build quality: The device is well-built and made of high-quality materials.
  • Good warranty: The device comes with a good warranty of 5 years if you register it with the manufacturer.


  • Pre-filter design: The pre-filter wraps around the exterior of the unit, so if it gets dirty, it directly affects the appearance of the unit.
  • Limited fan speeds: The device only has three fan speeds.
  • Lack of smart functionality: The device does not have a timer, remote, or smart functionality.
  • No HEPA filter: The device comes equipped with a proprietary particle filter instead of a HEPA filter.

The Blueair Blue Pure 211+ is a high-performing air purifier that is well-suited for larger rooms. It offers good energy efficiency and a relatively low noise output. However, its pre-filter design and lack of smart functionality may be drawbacks for some users. Despite these cons, its high clean air delivery rate (CADR), good build quality, and extended warranty make it a strong contender in the air purifier market. However, if value is a priority for you, other options such as the Coway Mighty and Winix 5500-2 may be more suitable.

Coway Airmega ProX

The Coway Airmega ProX is a high-performance air purifier designed for extra-large spaces, thanks to its binary motors and dual purification system. It boasts maximum strength, accommodating indoor spaces up to 2,126 square feet. The ProX Features Coway’s HyperCaptive filtration system, which combines an activated carbon and a True HEPA filter. This system captures and reduces up to 99.999% of particles down to 0.01 microns in the air, including pollen, pollutants, and other allergens. It also reduces more than 99% of volatile organic compounds and fumes, such as NH3 and CH3CHO.

Coway Airmega ProX
Coway Airmega ProX

The ProX’s real-time air quality monitor keeps you informed of the quality of your air. In Auto Mode, the fan and purification levels adjust to the space as needed. Fan speeds are available in 1, 2, 3 stages by manually setting up. While auto mode automatically optimizes the speed setting 1 through 3 based on the level of indoor air quality. When no pollution is detected for 30 minutes, the fan will automatically stop and set as Eco mode to save energy.

How It Performed

The Coway Airmega ProX has been recognized for its pollutant removal performance, power efficiency, and low noise level. It was ranked No. 1 in a performance evaluation of 186 air purifiers on the U.S. market by Consumer Reports, with a maximum score of 93.

In a 150 sq. ft. test environment, the Coway Airmega lowered room particle concentration from 10,000 particles per cubic ft. down to 1,000 particles per cubic ft. in 4 minutes. The AirMega, with its extremely high output of approx. 430 CFM, was able to clean the air in a relatively small room (150 sq. ft.) about twice as fast as units in the 250 CFM range and more than five times as fast as units in the 100 to 150 CFM range.


  • High output: The AirMega ProX has an output of approximately 430 CFM, meaning it can process a lot of air quickly in smaller rooms and properly service larger rooms.
  • High-quality filters: The ProX Features a washable pre-filter and a True HEPA filter for particle filtration, and a pellet-based carbon filter for greater surface area for unwanted gas (VOC, odor) adsorption.
  • Energy efficiency: The AirMega ProX is one of the most energy-efficient air purifiers on the market. It draws only 60.5 watts of power at approx. 430 CFM.
  • Low noise level: The ProX operates at a low noise level, making it ideal for use in environments where noise is a concern.


The biggest expense with the Coway Airmega ProX is the cost of replacing the HEPA filter. While the filters only need to be replaced every year or so, they can be quite expensive.

The Coway Airmega ProX is a top-tier air purifier that delivers high performance in large spaces. Its high output, quality filters, and energy efficiency make it a standout choice for those seeking to improve their indoor air quality. While the cost of filter replacement is a consideration, the overall performance and Features of the ProX make it a worthwhile investment for cleaner, healthier air.

How Does an Air Purifier Work?

Air purifiers work by combining an internal filter and fan to pull in unwanted particles from the air in a specific room. The purified air is then circulated back into the room, and this filtration process repeats several times an hour, continually boosting indoor air quality. High-efficiency particulate air (HEPA) filters are particularly effective, capable of capturing 99.97% of airborne particles, including allergens, dust, lint, mold spores, bacteria, viruses, and pet dander.

Types of Air Purifiers

There are several types of air purifiers that use different technologies to clean the air. Based on your selection, the most relevant types of air purifiers for this article are:

  1. HEPA Air Purifiers: These purifiers use HEPA filters, which are mechanical filters that force air through a dense web of fine fibers to trap particles. They are effective at removing both microscopic and larger particles when they’re suspended in the air.

  2. Activated Carbon Air Purifiers: These purifiers use activated carbon filters to capture certain types of gases, including some odor-causing molecules. They are effective at removing odors, chemicals, fumes, smokes, and gases from the air but may be less effective at removing pollen, dander, dust, or mold from the air unless the model includes a HEPA air filter.

  3. Ozone Air Purifiers: These purifiers generate ozone to eliminate odors and neutralize airborne pollutants. However, they can produce harmful levels of ozone, which can irritate the lungs and exacerbate respiratory issues. It’s essential to choose an ozone air purifier that meets safety standards and produces minimal ozone.

  4. Ionic Air Purifiers: These purifiers use electrical fields to trap charged particles. They emit negative ions into the air, which bond with positively charged, airborne particles like dust, making these particles so heavy that they eventually fall out of the air. Some ionic air purifiers have electrostatic precipitators that trap positively charged particles to a metal plate inside the air purifier.

  5. UV Air Purifiers: These purifiers use ultraviolet (UV) light to kill bacteria and viruses. They are effective at eliminating microorganisms but may not be as effective at removing larger particles like dust, pollen, or mold spores.

When choosing an air purifier, consider factors such as room size, specific health needs, maintenance, and energy costs. The best device will depend mostly on room size, plus your lifestyle and purification needs. For instance, if you live with a smoker, choose an air purifier that has a high Clean Air Delivery Rate (CADR) for tobacco smoke.

Choosing the Right Air Purifier

When it comes to purifying the air in your room, an air purifier needs to do two things. It needs a means of removing harmful particles and gases — typically done by a set of filters — as well as the ability to circulate most of the air in the room through those filters multiple times per hour using a fan. You’ll want to choose a device that does both of these jobs well.

Room Size

The Environmental Protection Agency (EPA) recommends that all the air in your room be processed through your air purifier five times per hour. To help you determine if a given air purifier will work for your room, most manufacturers list a maximum or recommended room size, and some will even mention how many air exchanges for the space per hour. To be sure you’re finding the right air purifier for your space, calculate your room’s square footage by multiplying its width and length, then look for a Clean Air Delivery Rate (CADR) rating that is about two-thirds of that number.

Specific Health Needs

If you live with a smoker, choose an air purifier that has a high CADR for tobacco smoke. Similarly, if you suffer from seasonal allergies or have a constantly shedding pet, you may already be familiar with the positive benefits of an air purifier. Not only do air purifiers help lower airborne pollution like dust, pollen and particulates, but the best air purifiers can tackle smoke and toxic gases as well as helping to filter out bacteria and viruses.

Maintenance and Energy Costs

Since air purifiers should run regularly, if not all the time, you’ll definitely want to choose a model that keeps energy use to a minimum. According to the EPA, a standard room air purifier uses 450 kWh per year, which is more than some new refrigerators. Energy Star rated air purifiers need to be over 25% more efficient than standard models.

Grab Your Deal Today

At Xievo, we offer a range of high-quality air purifiers on sale. Whether you’re looking for a compact model for a small room or a powerful system for a large space, we have you covered. Visit our website to explore our collection and grab your deal today.


Investing in an air purifier can significantly improve the air quality in your home, providing a healthier environment for you and your family. With the right information and a clear understanding of your needs, you can find the perfect air purifier on sale that offers the best value for your money.

Remember, clean air is not a luxury, but a necessity. So, don’t wait. Grab your deal today and breathe easier with your new air purifier.


Why should I consider purchasing an air purifier on sale?

Purchasing an air purifier on sale can help you save money while ensuring that the air quality in your home is improved. Air purifiers are essential for those who suffer from allergies, asthma, and other respiratory conditions as they can remove allergens and airborne particles from the air.

Are all air purifiers created equal?

No, not all air purifiers are created equal. Some models have more advanced filters or technologies that make them more effective at removing pollutants from the air than others. It’s important to do your research before purchasing an air purifier to ensure it meets your specific needs.

How do I know which size of an Air Purifier on Sale is suitable for my room?

Most manufacturers will specify what maximum room size their particular product is meant to cater for so it’s essential to check that information carefully when selecting a device-based solution for a room.

To select appropriate devices concerning different room sizes – small rooms (up to 300sqft), medium-size rooms (up to 700 sq ft), large rooms (over 700 feet) must be considered adequately concerning Cubic space per minute(CPM)/CADR – Clean Air Delivery Rate or ACH -Air Change per Hour measurements corresponding with selected model types before buying any Air Purifer available in Sales deals today.


Hey there, I'm Kevin, editor of Xievo. I'm passionate about air purifiers and providing accurate information to help readers make informed decisions. In my free time, I love hiking and experimenting with air purifiers in my own home. Thanks for visiting Xievo!