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mod jr. HEPA Air Purifier

Cleans 878 sq ft (2 times per hour)
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mod jr.

mod jr., where high design meets high performance. This top-of-the-line air purifier, with super quiet motor and intuitive swipe-touch glass control system, easily turns any small to medium sized room area into a clean room.

  • Bedrooms,
  • Children's Bedrooms,
  • Smaller Living Rooms
Effective For:
  • Dust,
  • Allergies,
  • Pet Dander,
  • Mold,
  • Smoke Particles,
  • Bacteria, Viruses,
  • VOC's
  • NEW. Meet mod jr., where high design meets high performance. Energy Star. Patent pending.
  • Smart design - from the glass user interface to the cylindrical shape with a blue carry handle and filter handle so a dirty filter will never be touched. Slide finger to set precise fan speed.
  • Removes Allergens, Asthma, Dust, Bacteria, Pollen, Mold Spores, Pet Dander, Smoke, Viruses, VOC's. 
  • What's included: Air purifier with filters installed, User's Manual
  • Remove air filter inside unit from plastic wrap before operating. See video of set-up.
  • Find the mod jr Replacement Filter.
  • View Technical Specs >

Buy 2+ & Save 10% ($359 Each)

Availability: Orders placed by 2pm EST (M-F) usually ship same day

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Free Shipping On All Products
60-Day Returns*
60-Day Returns*
10 Year Warranty On All Products
10 Year Warranty On All Products
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Meet the mod jr Hepa Air Purifier

With a smooth, low-profile exterior and cylindrical shape that easily fits anywhere in a smaller room.

Mod jr quietly brings the powerful air cleaning ability to remove 99.6% of virus sized particles and airborne particulates from a 878 square foot room two times per hour.

Smart design - from the glass user interface to the cylindrical shape with an orange carry handle and filter handle - rest assured the dirty filter will never be touched

Simple to use, low cost to operate and quieter than other true HEPA air cleaners in this price range.

Note: To power off, press and hold the power button until it powers down. To keep you safe from VOC's, it is possible for air bubbles to develop in the fabric due to the adhesive used.

Mod jr HEPA Air Purifier
Where to Use

Best for: Bedroom, Office, Small to Medium sized Rooms

Coverage Area
Coverage Area

Up to 878 sq ft

Effective For
Effective For

Dust, Pollen, Mold, Pet Dander, Allergies, Bacteria, Smoke Particles, Light Odors only

Mod HEPA Air Purifier

No air by-pass so all the air is filtered. This is a huge feature and is one reason we have superior air filtration performance.


Effective for fine particles, smoke and gases (methane gas, sulfur gases, and many others.)


Latest Japanese engineered EC motor is quieter and uses up to 90% less energy. Allow the motor a few seconds to reach the set speed. The reasons why are explained in the EC motor section below.

Easy to use
Easy to use

Control by touch - simply slide a finger along the fan speed arc to set the precise air flow. Compact and lightweight - at just 18 lbs, Mod jr is easy to move between rooms and it’s only 12 inches wide and deep by 22 inches high - fitting almost any space.

Technical Specs
Room Coverage:
Smaller sized rooms - up to 878 sq ft (2 air changes per hour)
CADR Rating:
Smoke: 234, Dust: 238, Pollen: 251
Fan Speeds:
Variable (80-235 CFM)
50 watts, 120V, 60Hz
One Filter (Pre-filter, HEPA, Activated carbon)
Filter Life:
6-12 months
Nano-Particle Removal:
99.4% at 0.1 microns, 99.4% at 0.02 microns (20 nanometers)
VOC (Formaldehyde) Removal:
76% (in 1 hour test)
Noise Level:
20-56 dBA
12" x 22" x 12" (W x H x D)
Pre-Filter Rating:
MERV15 (85%+ at 0.3 microns)
18 lbs
Glass user interface. Slide finger to set precise fan speed.
Where Made:
Designed in USA, Assembled in China
10 Years
Energy Star, CE, ETL, RoHS, California Air Resources Board (Model Number: MJR01, EO#: G-21-086)

How to prepare for use

Important Remove the air filter from the plastic wrap inside the air purifier before use. Note: to turn off you will need to press and hold the power button for 3 seconds

Brands Using Oransi

Oransi air purifiers are used by some of the leading companies, medical centers, government organizations and universities. We are delighted to be able to provide clean air to so many quality organizations.

American red cross

Still Have Questions?

The mod jr. Air Purifier is a high-performing product that is the result of over 1,000 engineering hours. Naturally, you may have some questions for us. Luckily, we have the answers.

See Questions & Answers >

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Quality Matters Most

Each day we breathe in 20,000 liters of air. Twenty thousand.

But much of that air is not clean. In fact, indoor air can be 2–5x worse than outdoor air because our homes and businesses act as traps for dust, pollen, bacteria, viruses, and more.

This is a disastrous equation for those of us who suffer from seasonal allergies or asthma, and those of us who get sick easily. That’s why a high quality HEPA air purifier is a necessity for your home or business.

That’s exactly what I (Peter Mann, founder of Oransi) realized more than a decade ago. Before the mod jr. HEPA Air Purifier. Before Oransi. My son was suffering from asthma and I knew a high quality air purifier would help. The only problem? Most of the air purifiers I saw didn’t disclose all of their performance stats and they focused on all of the wrong things (trendy gadgets and looks instead of ability and efficiency), which made choosing one a difficult task.

That’s when I decided to take matters into my own hands and build an air purifier brand that put performance and transparency first. Turns out, that’s exactly what people care about most, and more than a decade later we’re still here because we haven’t lost sight of that.

When you order the mod jr. HEPA Air Purifier, just know that you’re getting a high-efficiency, ultra-powerful, and whisper-quiet air purifying machine that just happens to also look good. From day 1, the #1 focus was performance because when it comes to the air you breathe your health matters most. Everything else is secondary.

Each Day We Breathe in 20,000 Liters of Air, but That Air Is Full of 200+ Allergens

It’s that magical time of the year again, when the leaves begin to change and you bring out the apple cider.

Unfortunately, with fall also comes 200+ allergens (like ragweed) that float in the air we breathe. While these allergens aren’t visible to the naked eye, they certainly make themselves visible by giving us unbearably itchy eyes, a mean cough, a runny nose, and never-ending sneezing.

In the image above is a single pollen particle magnified by 400x. Surprised to learn how something so small can wreak so much havoc on our bodies every allergy season?

Perhaps the reason why is because we’re unknowingly making matters worse. Everytime we step into our homes or offices we track in more of these allergens. Once inside, they don’t have many exits and they collect, making your indoor air 2–5x worse than outdoor air. This could be why your allergy medication is falling short of expectations each fall.

According to the CDC, almost 20% of the US experiences hay fever alone each year. That’s over 60 million Americans (or 1.5x the population of California). In other words, you are not alone in this fight—seasonal allergies are a BIG issue. To help combat seasonal allergies, the world-renowned Mayo Clinic recommends using a portable, high-efficiency particulate air (HEPA) filter indoors.

But not any HEPA air purifier will do.

You’ve Seen Their Commercials, But Are They Telling You Everything?

There are a lot of air purifier brands out there, and we’re sure you’ve seen a couple of their commercials. Some of these brands make great looking machines with lots of bells and whistles. But the reality is that while these features can sometimes be nice, they can’t make up for what really matters.


When comparing air purifiers the #1 detail you need to research is the clean air delivery rate (CADR), which is a measure of how many cubic feet per minute (CFM) of air that has had all of the particles of a specific size removed. Can you guess how many other air purifier brands are willing to share their CADR numbers with you?

Performance Like This Doesn’t Come Easy

We’re going to do something that those other brands are too afraid to do—share our CADR numbers with you right here in black and white:

mod jr. HEPA Air Purifier CADR rates:

With a pollen CADR of 251 cfm, this means that the mod jr. removes the pollen from a space measuring 251 cubic feet each minute. As an example, a 850 sq ft room with an 8 ft high ceiling is 6,800 cubic feet. 6,800 / 251 is equal to about 27 minutes. In other words, the mod jr. can remove the pollen from a 850 sq ft room in just 27 minutes!

Here’s another thing other brands don’t want you to know: they’re using AC motor technology that was first developed in the 1920s 1900s 1880s. Before TV, before radio, before World War I.

The mod jr., on the other hand, uses the latest Japanese engineered EC motor technology that is whisper-quiet and unmistakably efficient (up to 90% more energy efficient than the other guys). In fact, thanks to the mod jr.’s unmatched ability to capture and trap allergens and other particles with ease, it can save you an average of Reveal per year on energy costs. That’s already 15% of the cost of the mod jr., meaning this air purifier will make up for its cost within 7 years (with an industry-leading 10-year warranty, you know it’ll do that plus more).

Air Purifier Noise Levels

As you can probably imagine, achieving this level of performance was a difficult task. The one thing that we struggled with the most was figuring out how to engineer a compact air purifier that didn’t compromise on the filter quality, motor efficiency, and quiet operating volume that made us trusted by world-class organizations such as these:

We considered everything.

We had to go back to the drawing board, and eventually we had our lightbulb moment: what if we use a cylindrical 3-in-1 filter (a single filter component that combines a pre-filter for large particles, HEPA filter for fine particles, and activated carbon filter for smoke and VOCs)? See the mod jr. in action:

Are you here because of allergies?

The mod HEPA Air Purifier for Allergies is made for this.