Air Doctor 3000 vs Alen BreatheSmart 75i True HEPA Air Purifier

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Airdoctor 3000 vs Alen BreatheSmart 75i Air Purifier

Do you have allergies? Are you allergic to dust and pet scents?

If so, it’s important to know how to properly clean your household using air purifiers. Let’s look at the best air purifiers currently on the market and see which one is best suited for you!

Airdoctor AD3500 by idealliving summer sale on sale huge discounts save money

We’ve come up with this comparison and guide for today’s post. Keep reading to understand the differences between Air Doctor 3000 and Alen BreatheSmart 75i!

Generally, Air Doctor 3000 and Alen BreatheSmart 75i are both excellent purifiers. They are ideal for your home’s largest spaces.

Each of them has quality features that are easy to navigate. The AD3000’s air filtration system is among the most effective in its class.

Meanwhile, Alen BreatheSmart 75i has a strong motor and a huge activated filter.

You can’t go wrong with either one of these great buys.

Air Purifier Air Doctor 3000 Alen Breathesmart 75i
Room Size Coverage 505 sq. ft. 5x/hour 520 sq. ft. 5x/hour
CADR (Smoke)/CFM 340 347
Fan Speeds 4 5
Noise Level 39-59 dB 25-49 dB
Power Consumption 11 – 110 W 2 – 45 W
Dimensions 15.75″ (W) x 8.35″ (D) x 23″ (H) 18.5” (W) x 11.5” (D) x 27” (H)
Weight 18 lbs 27 lbs
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Air Doctor 3000 Air Purifier 

AIRDOCTOR AD3000 AD3500 Air Purifiers for Home And Large Rooms

Air Doctor’s AD3000 is a mid-sized air purifier with easy installation. It has simple button controls and convenient maintenance.

This device is effective and ideal for use in dining rooms, living rooms, and kitchens. Most importantly, you can use this in large areas of the house.

Additionally, the air filtering technology of Air Doctor AD3000 is among the best available.

According to reviews, consumers claim a significant improvement in the air quality of their homes. Others have already bought a second one because they are very satisfied with the unit.

For them, it operates quietly and accomplishes its purifying function effectively.

It is very quiet and doesn’t make much noise. They love that the filters have a very long life expectancy. Lastly, the setup and operation are very simple to utilize.


  • High-quality air filtration system
  • Strong fan power
  • Filters smoke odor


  • It can be noisy at the highest speed

Alen BreatheSmart 75i Air Purifier 

Alen BreatheSmart 75i air purifier

Alen BreatheSmart 75i is ideal for large spaces and offers various color options. And most importantly, the Alen brand has first-rate customer service. 

Alen BreatheSmart 75i Pure excels at high and low settings when catching and eliminating dust and smoke.

In addition, this device is not very noisy, so you can chat or get some work done even while it is on. 

Consumers chose Alen BreatheSmart 75i because of its rural location. Some are near a dirt road and a forest of pines and oaks.

It has a filter that is effective against chemical scents. Thus, they opted for Alen’s for the fresh sense filter. 

At the same time, other consumers claim that their allergies improve over time. It’s a relief that they’ve found an alternative to medicines that work.


  • Large room coverage
  • Very quiet
  • Lifetime Warranty


  • Outdated, industrial interface
  • A bit low CADR rating

Air Doctor 3000 vs. Alen BreatheSmart 75i Design Comparison 

When compared to the Airdoctor3000, Alen BreatheSmart 75i is larger and heavier. It also has several color choices to choose from.

If you compare it to Airdoctor, it only offers one selection. However, you can navigate both devices easily since their control panels sit at the unit.

AIRDOCTOR AD3000 AD3500 Air Purifiers for Home And Large Rooms dimensions and size

As you can see, Air Doctor 3000 is a huge console air purifier, measuring 23 inches in height and 15.75 inches in width. You can only get it in a single, white color scheme.

It has a black lining on the side and an oval shape. The buttons on the control panel allow for easy navigation.

In addition, Air Doctor AD3000 uses the standard bottom-to-top airflow system principle. It also has a well-sealed internal design. This prevents dirty air from escaping throughout the purification process. The fan motor is also huge.

As a result, it allows for high fan power. Furthermore, the built-in storage is spacious and cleverly designed to maximize air production because this design helps minimize noise.

Then, you can locate the air quality indicator in the front of the device linked to a sensor on one side. On top, you’ll find the control panel with its simple icons and labels.

Alen BreatheSmart 75i air purifier Design

Meanwhile, Alen BreatheSmart 75i is large in appearance, too. It measures 27 inches in height and 18.5 inches across. You can choose from a variety of 14 different colors.

Pick White, Oak, Gray, Graphite, or Espresso themes. The interface is touch-screen-based, allowing for easy navigation.

As you can see, the ventilation system of Alen BreatheSmart 75i is set up from the bottom up. It has a sizable filter hidden below the front panel.

Even with a 360-degree airflow intake, Alen BreatheSmart 75i will still be able to make the most of the fan power. Moreover, you can see its logo displayed on the control panel of the air outlet grill.

The primary difference between these two lies in their dimensions and weight. At the same time, they also differ in shapes and color choices.

In addition, the Alen BreatheSmart 75i’s control panel has a touch screen. At the same time, the Airdoctor 3000 is a button-based navigation.

Ultimately, both gadgets have a user-friendly interface that makes operating simple. Each has good quality motor fans, creating indoor quality circulation.

How Large And What Kind Of AirBorne Particles Air Doctor 3000 And Alen BreatheSmart 75i Can Filter? 

Cooking Odors

Generally, Air Doctor 3000 And Alen BreatheSmart 75i can filter airborne particles. These include dust, dust mites, pollen, smoke, cooking odors, and VOC compounds.

Air Doctor 3000 can eliminate 0.003 microns in size. Meanwhile, Alen BreatheSmart 75i can filter contaminants down to 0.1 microns.

Overall, both devices have particle sensors of PM 2.5. This feature is excellent for eliminating dirty particles.

The True HEPA filter of the Air Doctor 3000 can remove airborne particles as small as PM 2.5. It is also effective in purifying dirt as fine as 0.003 microns.

Additionally, it does a great job of filtering the air to eliminate 99.95% of fragments. It also has activated carbon, which is responsible for removing pollutants. Airdoctor 3000 can also filter out smoke and harmful fumes.

Let’s see the percentage it can remove from these contaminants: 

  • Smoke: 01.1- microns
  • Bacteria: 0.06-0.2 microns
  • Viruses: 0.06-0.1 microns
  • Pet dander: 2.5-10 microns
  • Pollen: 10-20 microns
  • Mold: 10 microns

On the other hand, Alen BreatheSmart 75i has True HEPA (H13) filters with a PM 2.5 particle sensor. It can remove 99.99% of airborne pollutants as small as 0.1 microns.

This device can also effectively neutralize odors caused by smelly kids and pets. Moreover, it also reduces the smell of overflowing garbage cans and other odors in homes.

Alen BreatheSmart 75i can remove the following articles:

  • Viruses: 0.01-0.05 microns
  • Pet dander: 0.1 microns
  • Pollen: 0.1 microns
  • Mold: 0.1 microns

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Air Doctor 3000 vs. Alen BreatheSmart 75i Filters Compared

Alen BreatheSmart 75i and the Airdoctor 3000 both use a four-stage filtration system. Yet, the quality of the filter used varies. The Air Doctor 3000 consists of H13 UltraHEPA. At the same time, Alen BreatheSmart 75i contains a TRUE HEPA filter.

As stated, the UltraHEPA filters of AirDoctor 3000 are excellent at capturing particles. Air Doctor’s UltraHEPA and Carbon VOC filters will work with your AirDoctor 3000 air purifier.

AirDoctor 3000 filters

Air Doctor 3000 features a four-stage air purification system:

  • Pre-filter
  • Activated Carbon filter 
  • UltraHEPA filter 
  • Ionizer 

Meanwhile, Alen BreatheSmart 75i’s True HEPA filter also captures allergens. It has an innovative plastic filter frame and a removable pre-filter. Alen BreatheSmart 75i Filters

True HEPA filters of Alen BreatheSmart 75i are available for replacement. You can purchase it easily from online markets. 

  • Pure
  • Fresh 
  • Pet
  • Heavy Odor

So overall, AirDoctor provides better filtration. It traps smaller particles; it is also better for odors.

Air Doctor 3000 vs. Alen BreatheSmart 75i Main Features

Air Doctor 3000 and the Alen BreatheSmart 75i offer consumers smart key features. Each unit features a smart sensor, a timer with an LED display, a timer indicator, and much more.

However, the Alen BreatheSmart 75i is highly innovative because of the Alen app. Meanwhile, the AirDoctor 3000 does not offer this kind of feature.

In Airdoctor 3000, you have several simple options. You have easy access to LED lights and 6-button panels. You can also find a dimmer setting.

The following are extra features:

  • Powerful ventilation system
  • A switchable nighttime mode
  • Light filtration indicator
  • An adjustable timer 

Meanwhile, using the Alen BreatheSmart 75i’s innovative Alen app, you can quickly command the device to change its settings. It features 7 buttons that are touch screen display.

Some more distinguishing and essential characteristics are:

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

To sum up, both devices provide a sleep-friendly timer and speed setting. You can monitor the air quality of each device automatically by their air sensors.

AirDoctor 3500i - Airdoctor with Wifi connected app

The traditional AirDoctor 3000 enhanced with integrated Wi-Fi capabilities is available now! With the new AD3500i, get live air quality updates, filter replacement notifications, remote control, and easy device sharing.

Which Air Purifier Consumes Less Electricity: Air Doctor 3000 or Alen BreatheSmart 75i? 

AirDoctor 3000 and Alen BreatheSmart 75i energy consumption

Alen BreatheSmart 75i consumes less electricity compared to AirDoctor 3000. Alen reduces energy use to 45 watts at 120 volts. At the same time, the power requirements of an AD3000 are 95W at 120V.

Let’s calculate and use the US average as $0.1319/kWh. 

Alen BreatheSmart 75i

  • Highest Speed Setting: 45W
  • Electricity Consumption: $0.14 per 24 hours
  • Lowest Speed Setting: 11W
  • Electricity Consumption: $0.03 per 24 Hours

Using Alen BreatheSmart 75i 24 hours per day in a year would cost you an annual fee of $51.10 at the highest speed setting. 

On the other hand, Airdoctor 3000 uses 11W, its low setting. While in its high setting, it uses 110 watts. Let’s calculate. 

Airdoctor 3000

  • Highest Speed Setting: 110W
  • Electricity Consumption: $0.35 per 24 hours
  • Lowest Speed Setting: 11W
  • Electricity Consumption: $0.03 per 24 Hours

Using an Airdoctor 3000 for 24 hours per day in a year would cost you an annual rate of $127.75 at the highest speed setting.

These are smart air purifiers, so they will probably be in auto mode all the time. Auto mode only uses the highest fan speed when the air is very dirty, then switches to lower fan speeds.

So your actual cost will be a lot lower than our calculations.

Which Air Purifier Is Less Noisy: AirDoctor 3000 or Alen BreatheSmart 75i?

AirDoctor 3000 and Alen BreatheSmart 75i noise


By comparison, Alen BreatheSmart 75i is quieter. It has a noise level of only 25 dB, while the Air Doctor 3000 emits 38 dB. This is under their minimum noise production.

In most cases, the loudest Alen BreatheSmart 75i can get 49 dB. The maximum volume of Air Doctor 3000 can produce 59 DB.

Airdoctor’s WhisperJet technology allows their air purifiers to run 30% more quietly. At the same time, don’t forget that Alen BreatheSmart 75i has a fantastic pink noise frequency.

Above all, there is minimal noise during the operation of both units. Thanks to their Whisperjet features.

Air Doctor 3000 vs. Alen BreatheSmart 75i: Room Coverage And CADR Rating

Air Doctor 3000’s CADR: 328 Dust/340 Smoke/ 377 Pollen. This CADR value is typical with high-end and even mid-range air cleaners.

With AD 3000, you might use that to clean a space of 505 square feet once every 12 minutes or 1263 square feet every 30 minutes. 

Alen BreatheSmart 75i CADR: 355 Dust/ 350 Smoke/ 400 Pollen

With Alen 75i, you might use that to clean space of 520 square feet once every 12 minutes or 1300 square feet every 30 minutes. 

Air Doctor 3000 vs. Alen BreatheSmart 75i Maintenance

Both the Alen BreatheSmart 75i and the Air Doctor 3000 require minimal upkeep. These two models have built-in alert systems that signal when you need to replace the filter.

To maintain peak performance, you must replace a new filter in your Airdoctor AD3000 after 12 months. Whereas every six months, you should clean the carbon filter. 

On the other hand, you’re getting Alen’s lifetime warranty and longer filter life at no extra cost. The pre-filter of the Alen BreatheSmart 75i is now removable, making it much simpler to clean. Don’t forget that you need to change the filter after a year.

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Air Doctor 3000 vs. Alen BreatheSmart 75i Price

AirDoctor 3000 and Alen BreatheSmart 75i Price comparison

Air Doctor 3000 standard price on the official website is $629 ($349 to our blog readers), with an option to get now and pay later as low as $32/month, while the Alen BreatheSmart 75i price is $749.

Alen BreatheSmart 75i Replacement Filters cost $99 for Pure and $139 for the Pet/Odor version. Alen offers subscriptions for their filters, giving you 10% off.

Air Doctor 3000 replacement filter set price is $150. It includes 1 UltraHEPA filter and 2 Carbon Gas Trap/VOC filters.

Air Doctor 3000 vs. Alen BreatheSmart 75i: Which One Should You Choose?

Alen BreatheSmart 75i offers everything you may want in an air purifier. Furthermore, its innovative features can add more convenience to your daily routine. Thus, you can rely on its durability. 

This unit strikes a strong balance between power consumption and efficiency. Consequently, Alen 75i is consistent with its product claims. So get the Alen BreatheSmart 75i if you want high-tech functions but still benefit from their quality performance.

If you need a high-quality air purifier for a large room yet prioritize ease of use, consider Airdoctor 3000. It traps smaller particles, is better for odors, doesn’t need to shake your head to choose which filter to use, and is cheaper. 

Take a look at the AD2000 model and Alen Brathesmart FIT50 comparison review.

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