Air Doctor 2000 vs Alen BreatheSmart FIT50 Air Purifier

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AirDoctor 2000 vs Alen BreatheSmart FIT50 Air Purifier

Are you considering purchasing an air purifier? But aren’t you sure it will work for your family? Choosing the right model can be confusing with so many products on the market. But worry no more: We’re here to help!

This post will compare the two models to help you decide which is best for your household.

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Several homeowners have found success with Air Doctor 2000 and Alen BreatheSmart FIT50 air purifiers. Both are ideal for medium-sized and smaller rooms. Additionally, each has excellent air purification functionality. 

Alen FIT50 is a great choice, considering factors like room coverage and features. You can also rely on its energy usage and filter life expectancy.

At the same time, Air Doctor 2000’s ease of use is unbeatable. This is a great option if you want an air purifier that doesn’t require any complicated setup.

Air Purifier Air Doctor 2000 Alen Breathesmart FIT50
Room Size Coverage 305 sq. ft. 4x/hour 450 sq. ft. 4x/hour
CADR (Smoke)/CFM 152 220
Fan Speeds 4 4
Noise Level 38-59 dB 32-49 dB
Power Consumption 11 – 110 W 1.2 – 60 W
Dimensions 13.85″ (W) x 6.6″ (D) x 18.72″ (H) 16” (W) x 10” (D) x 22” (H)
Weight 10 lbs 16 lbs
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Air Doctor 2000 Air Purifier 

Airdoctor 2000 Air Purifier 

When it comes to classic air purifiers, Air Doctor 2000 is your simple choice. It is often regarded as a compact but mighty option.

It’s an effective air purifier that doesn’t take up much space in your home. That’s why it’s perfect for use in bedrooms, home offices, and nurseries.

This is especially true when the space is a little bit smaller.

Consumers claim that the device performs admirably in dusty conditions. This prevents dust from accumulating in their space.

In addition, it contributes to the cleanliness of the air in their room. Others have even purchased it for office use due to its convenience and suitability.


  • The portable design makes it ideal for small quarters
  • High-quality ventilation performance
  • Simple, speedy assembly


  • No remote controls

AirDoctor 2000i - Airdoctor with Wifi connected app

The remote control is no longer problematic with the new AD2000i model, which has Wi-Fi and an app. Get real-time air quality alerts, monitor and control everything, and share it with your friends and family.

Alen BreatheSmart FIT50 Air Purifier 

Alen BreatheSmart FIT50 air purifier HEPA

All BreathSmart models are remarkable with highly advanced technology. Thus, BreatheSmart FIT50 is one of their excellent models.

Alen BreatheSmart FIT50 comes with a lifetime guarantee. Additionally, consumers can depend on it as the best room coverage on the market.

The quality of Alen’s air purifier matches its key features and design. 

Consumers have remarked on its durability and resilience. They purchased a unit six years ago that is still functioning perfectly.

In addition, it’s very useful in heavy animal areas and urban locations with plenty of smog.


  • Variety of color unit choices
  • Large room coverage
  • Very quiet


  • Low CADR for room coverage
  • Filter life indicator can malfunction

Who Is Better Designed Air Doctor 2000 or Alen BreatheSmart FIT50? 

The Alen BreatheSmart FIT50 is more visually striking than the AirDoctor 2000. Alen FIT50 is larger in height and wider. It also comes in a different choice of color.

You can choose from Espresso, Maple, Graphite, and many more.

Alen BreatheSmart FIT50 design

The Alen BreatheSmart FIT50 is a similar-looking air purifier you can fold down. The dimensions are 22 inches in height and 16.7 inches in width. It has a standard box with an access cover. 

Customizing your air purifier to your tastes and needs is as simple as picking a color for the front panel. You may choose from 14 colors, so finding one that matches your home is easy.

On the other hand, Air Doctor 2000 is still a wide range in size. Its exact dimensions are 13 inches wide and 18 inches tall. However, there is just one white design available.

Regarding its appearance, it has a sleek black outline around an oval form factor.

AiDoctor 2000 Design

Air Doctor 2000’s air outlet is conveniently placed on top, right next to the control panel. You’ll find the air quality monitor just next to it.

You can locate its touch control panel on the purifier’s top. To facilitate transport, it features a set of handles on both sides. You can locate the power outlet at the bottom part of the device.

Meanwhile, Alen BreatheSmart FIT50 has a sophisticated control panel with 7 buttons. You can identify it with the help of its modest logo labeled “FIT50”. It sits right in the bottom corner of the control panel. 

Meanwhile, the Airdoctor 2000 interface consists of 6 buttons. Unfortunately, you cannot use a smartphone app or a remote control. So you’ll have to do everything manually.

How Large And What Kind Of AirBorne Particles Air Doctor 2000 And Alen BreatheSmart FIT50 Can Destroy? 

How Large And What Kind Of AirBorne Particles Airdoctor 2000 And Alen BreatheSmart FIT50 Can Destroy? 

The AirDoctor 2000 and the Alen BreatheSmart FIT50 effectively remove pollutants and allergies from the air.

The Air Doctor 2000 has a filtering efficiency of 99.99% against airborne allergens greater than 0.003 microns. They are so effective that they can even remove other microscopic particles.

It also has a high-quality carbon filter built in. This filter eliminates volatile organic compounds and odors. 

In addition, AD2000 is effective for collecting carbon/gas, smoke, and lingering odors. They can purify pollen, mold spores, and cigarette smoke.

It also removes pet hair, dander, viruses, and germs.

At the same time, Alen BreatheSmart FIT50 filters the air by 99.99% greater than 0.1 microns. They purify germs, viruses, and other particles floating around.

Furthermore, coughing, sneezing, running nose, and watery eyes are also improved. Moreover, household scents like smoke and kitchen fumes are also eliminated.

Alen’s Molecular Conversion Powder feature neutralizes odors at the molecular level.

Overall, both are great for tiny particles, but AirDoctor’s 0.003 microns is a lot better purification than Alen’s 0.1.

Air Doctor 2000 vs. Alen BreatheSmart FIT50 Filters Comparison

Airdoctor 2000 filters

Air Doctor 2000 consists of 3 filters: Pre-Filter, Carbon Filter, and UltraHEPAFilter. Meanwhile, BreatheSmart FIT50 has a Pre-filter, True HEPA Filter, and Charcoal Filter.

AirDoctor 2000’s H13 Ultra HEPA filter is of medical quality. It can catch a maximum of 100 particles, proven in laboratory tests.

According to MRIGlobal, 99.97% of AD2000 filters eliminate the live SARS-CoV-2 virus. This is under a test chamber’s airflow using the AirDoctor Ultra filters.

In comparison, Alen BreatheSmart FIT50 has reclaimed its ionizer feature. With the help of this, it better integrates with its 3-stage air cleansing process.

The core of each of the four HEPA filters is the following:

  • HEPA-Pure
  • HEPA-Fresh
  • HEPA-Silver
  • HEPA-OdorCell

Typically, the True HEPA-Pure filtering system is what you’ll get if you buy a regular Alen FIT50. The ionizer is there for your use, so feel free to activate it if necessary.

By all means, both units have very good filtering systems. However, AirDoctor 2000 gives less headache to customers – one filter for all instead of Alen’s choice between 4.

Air Doctor 2000 vs. Alen BreatheSmart FIT50 Key Features 

AirDoctor 2000 has simple key features that are beneficial for high-quality purification.

On the contrary, Alen BreatheSmart FIT50 has more advanced and high-tech components. These include the Alen app and SmartSensor.

Airdoctor 2000 Key Features 

In most cases, consumers find themselves drawn to Airdoctor 2000. That is due to its simple user interface. The device is very user-friendly and easy to use. Key features include:

  • High-powered, whisper-quiet fan
  • A switchable nighttime mode
  • Indicator filter light
  • A timer that may be set for up to 24 hours

In comparison, the replaceable front panel of Alen FIT50 is one thing that sets it apart.

Alen FIT50 key features

Additional unique and key features include:

  • Auto mode adjusts fan speed 
  • FIT50 senses in vivid LED color
  • Whisper Quiet
  • Emergency Preparedness
  • Smart Alen App

You can personalize your Alen BreathSmart FIT50 to meet your requirements. The FIT50 has a timer function set for 2, 4, or 12 hours.

There are also speed options, with four to pick from. If you set the Alen BreathSmart FIT50 to its lowest setting, it won’t produce a sound while you sleep.

Overall, both devices have a timer and speed setting that are ideal for bedroom spaces. In this case, rest assured that you will have a good night’s sleep.

Additionally, both units have automatic air sensors that measure air quality. 

Which Air Purifier Consumes More Power: Air Doctor 2000 or Alen BreatheSmart FIT50? 

Air Doctor uses only 11 watts of power on its low setting, while in its high setting, it uses 110 watts. Specifically, you should expect to pay $20-$60 annually for using this device in auto mode daily.

The Alen BreatheSmart FIT50 draws 1.2 watts on standby mode up to 60 watts of power at maximum fan speed. The annual cost for utilizing an Alen BreatheSmart FIT50 for 24 hours daily is approximately $10-30.

Furthermore, Alen BreatheSmart FIT50 has earned the Energy Star rating. As a result, it is widely known for being one of the most power-saving air purifiers available.

Which Air Purifier Is Less Noisy: Air Doctor 2000 or Alen BreatheSmart FIT50?

Alen BreatheSmart FIT50 is less noisy, with 32.4 dB, compared to AirDoctor 2000, which has 38 dB on the lowest fan speed.

Alen BreatheSmart FIT50’s maximum volume is only 48.7 dB. At a distance of 100 feet, this is equivalent to the noise level of an average household conversation.

In comparison, AirDoctor 2000 generates 59 dB at the highest speed.

Consequently, both units produce very little noise during operation. On the lowest level, these shouldn’t be any louder than a normal night’s sleep.

Air Doctor 2000 vs. Alen BreatheSmart FIT50: CADR And Room Coverage

Air Doctor 2000 purifiers have 152 Dust/ 162 Smoke/ 172 Pollen (cfm). That can clean a 305 sq feet room 4x every hour.

Meanwhile, the CADR of Alen BreatheSmart FIT50 is 194 Dust/ 188 Smoke/ 222 Pollen (cfm). This unit can cover up to 450 sq. ft. 4x every hour.

Alen BreatheSmart FIT50 is more effective regarding CADR rating and room coverage. 

If you need to cover larger areas and still want to use any of these brands, go for AirDoctor 3000 or Alen BreatheSmart 75i.

Air Doctor 2000 vs. Alen BreatheSmart FIT50 Maintenance

AirDoctor 2000 vs. Alen BreatheSmart FIT50 Maintenance

Air Doctor 2000 and Alen BreatheSmart FIT50 are both easy to clean and maintain. Both units feature alert systems that notify the user when changing the filter is time.

With Air Doctor 2000, remember that you must clean the carbon filter every six months. However, after 12 months, you should replace the UltraHEPA filter.

Comparatively, filter replacement is a breeze with Alen BreatheSmart FIT50. Just pop off the top of the air purifier and slide out the filter to swap it out. Changing a filter on the FIT50 model is as simple as that. Keep in mind that you should replace its filter after 12 months. 

Air Doctor 2000 vs. Alen BreatheSmart FIT50 Price

Air Doctor 2000 standard price on the official website is $389 ($279 to our blog readers), with an opportunity to get now and pay later as low as $26/month, while the Alen BreatheSmart FIT50 price is $549.

Alen BreatheSmart FIT50 Replacement Filters cost $89 for Pure and $139 for the OdorCell version. Alen offers subscriptions for their filters, giving you 10% off. AirDoctor 2000 replacement filter set price is $45.

AirDoctor 2000 vs. Alen BreatheSmart FIT50: Which One Is Better?

Overall, the Alen BreatheSmart FIT50 is slightly better than the Air Doctor 2000.

Its larger surface area and greater height make it an effective air purifier. Rest assured that its CADR rating and room coverage will eliminate unwanted dust or dirt in your home.

It also has advanced features, such as the Alen app, that users will find convenient. The layout incorporates modern structures with several colors to choose from—no wonder these shades will blend in every part of your room.

If you’re searching for overall quality, less power consumption, and less noise produced, go for Alen BreatheSmart FIT50.

While the Air Doctor 2000 is excellent in its own right. Still, it falls short of the BreatheSmart FIT50 in too many ways.

However, choose Air Doctor 2000 if you need a device with simple functionality. Yet with a high degree of comfort. This is best for small spaces suitable for your small family.

AirDoctor 2000i - Airdoctor with Wifi connected app

Things change with the new AD2000i model, which has Wi-Fi and an app. Get real-time air quality alerts, monitor and control everything, and share it with your friends and family.

Read our Air Doctor 2000 vs. Levoit LV-PUR131 comparison.

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