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MicroAIR U100

Efficient treatment when you need it.

The MicroAIR U100 Nebulizer is efficient, silent, and fits easily into your bag—so your whole family can breathe easy, wherever life takes you.

Buy U100 What is a nebulizer?
Truly portable

Instant therapy in your pocket.

Traditional nebulizers can be bulky and require a power outlet to work—not very convenient when you’re planning a nice day out!

Now relief is at your fingertips, even when you’re on the road. The battery-operated MicroAIR U100 is compact, travel-ready and easy to reach for whenever you need it.

Virtually silent

Deliver your own treatment without making a sound.

While traditional nebulizers can be loud, the MicroAIR U100 is virtually silent.

Simply press one button, breathe naturally, and slip back into your bag when you’re done—all without turning any heads.

More flexible

Get relief from any angle or position.

The MicroAIR U100 helps deliver efficient treatment, whether you’re lying down, standing up, or dangling upside-down from monkey bars.

All you have to do is find the position that’s most comfortable for you.

More efficient¹

Help control your symptoms with unique mesh technology.

The MicroAIR U100 uses a unique mesh technology that delivers more medication into the lungs compared to most compressor nebulizers.

Learning how to use the MicroAIR U100 takes less than 2 minutes


A better experience for you.

Take it anywhere
Virtually silent
Works in any position
More efficient technology¹

Live forward with zero compromise.

At OMRON Healthcare we promise to minimize the impact of your health conditions and enable you to live a more fulfilling and active life with the products we offer and continue to develop. Helping you to live forward with zero compromise towards a freer and more rewarding life.

GOING FOR ZERO COMPROMISE on healthier lives.

See how the MicroAIR U100 came to be

The relentless pursuit of quality.

In 1978 we launched our first nebulizer, from our founding base in Japan, and as leaders in this sector we’ve continued to further advance nebulizer technology.

This has led us to launch our latest portable, pocket-sized nebulizer, the MicroAIR U100. Take a look at our legacy lineup to see the advancement for yourself.


Nebulization in hospitals

Our first nebulizer, the ultrasonic NE-U10.


Nebulize at home

Nebulizing treatment shouldn’t require a hospital visit. With the invention of the NE-C10 compressor nebulizer—it no longer did.


Nebulize on the go

Many respiratory diseases require frequent treatments during the day. The invention of the NE-U03 portable mesh nebulizer allowed efficient treatment without having to stay home.


Nebulize without the noise

Some nebulizers can be very loud. The invention of the CompAIR C801 home compressor nebulizer had a low sound level so treatment was possible without having to go into another room.


Nebulize efficiently—anywhere, anytime

The MicroAIR U100 uses advanced mesh technology making it more efficient than most compressor nebulizers. Virtually silent, truly portable, and usable in any position—it’s a revolution in convenience and comfort. Now efficient treatment is possible wherever life takes you.

Breathe easy, everywhere.


OMRON offers a wide range of nebulizers to fit every need and every budget. With each breath, our reliable, portable and discrete nebulizers deliver efficient drug deposition, providing great results.

Compare the products below
  • MicroAIR U100 Portable Nebulizer

    MicroAIR U100

  • Ne-c102-total-compressor-nebulizer

    C102 Total

  • DuoBaby nebulizer with nasal aspirator


  • A3 Complete nebulizer

    A3 Complete

  • MicroAir U22 portable mesh nebulizer

    MicroAIR U22

  • C28P compressor nebulizer for asthma, COPD, cystic fybrosis, emphysema

    CompAIR C28P

  • C801KD nebulizer for respiratory diseases in children

    CompAIR C801KD

  • Efficient and silent everyday nebulizer

    CompAIR C801

  • C803 light and quiet nebulizer

    CompAIR Basic C803

  • C900 Professional, easy to clean compressor nebulizer

    CompAIR Pro C900

    NE-C900-E pro
  • U780 Hygienic professional ultrasonic nebulizer

    UltraAIR Pro U780

    NE-U780-E pro

MicroAIR U100

MicroAIR U100 Portable Nebulizer

Efficient treatment when and where you need it

The OMRON MicroAIR U100 is a small, portable nebulizer that helps to efficiently treat respiratory conditions from a simple cough to asthma.

Traditional nebulizers can be bulky, noisy and require a power outlet to work—not very convenient when you’re planning a nice day out!

Now relief is at your fingertips, even when you’re on the road. The battery-operated MicroAIR U100 is compact, travel-ready and easy to reach for whenever you need it.

The unique mesh technology makes it more efficient1 and more comfortable to use than traditional nebulizers. It is virtually silent and the unique design enables usage in any position. Even while lying down, making it more comfortable for smaller children.

Product features:

  • Portable, pocket-size and battery operated (2xAA)
  • Silent, one-button operation enabling discreet use
  • Efficient medication deposition in the lungs
  • 360° operation makes inhalation possible in any position

Box contains:
Main Unit, Main Unit Cover, Medication Container, Mesh Cap, Mask Adapter, Mouthpiece, 2 Batteries (AA), Child and Adult mask (PVC), Soft Pouch, Instruction Manual, Quick Setup Guide

Adult Mask (PVC); Child Mask (PVC); Infant Mask (PVC); Adult Mask (SEBS); Child Mask (SEBS) set - 1 child mask + adapter for child mask; Mesh Cap; Medication Container; Mask Adapter; Mouthpiece; AC adapter

Instruction Manual

1. Compared to most compressor nebulizers

C102 Total


Four seasons, one solution to breathe freely all year round

With the change of seasons, children can suffer from different respiratory diseases making it difficult to breathe freely.

  • In spring and summer pollen can trigger allergic rhinitis causing runny nose, sneezing or itchy eyes and nose
  • In autumn and winter viruses start spreading, affecting the airways with symptoms such as blocked or runny nose, coughing or a sore throat

With the OMRON C102 Total 2-in-1 Nebulizer with Nasal Shower, you can efficiently treat and provide relief for different respiratory symptoms and diseases throughout the year.

Read more

Product features:

  • Nasal Shower - cleans the nasal cavity and helps to relieve symptoms of conditions such as common cold, allergic rhinitis or sinusitis
  • Nebulizer - provides efficient medication deposition in the lungs to treat diseases such as bronchitis, bronchiolitis and asthma
  • Easy to use and hygienic
  • Suitable for children and adults

Box contains: 
Compressor, Nebulizer Kit, Nasal Shower, Adapter, Mouthpiece, Adult Mask (PVC), Child Mask (PVC), Instruction Manual, Air Tube (PVC, 100cm), Air Filter (installed in the main unit)

Nebulizer Accessory Set (Nebulizer Kit, Adapter, Mouthpiece, Nosepiece, Adult Mask (PVC), Child Mask (PVC), Air Tube, Air Filter)

Instruction Manual


DuoBaby nebulizer with nasal aspirator

Gently cleans the nose and provides efficient nebulization

OMRON DuoBaby is a unique 2in1 compressor nebulizer with integrated nasal aspirator that can help treat the most common respiratory conditions of babies. The nasal aspirator gently cleans the nose, reduces congestion and allows the baby to breathe freely. The nebulizer enables efficient medication deposition to the upper and lower airways.

Read more

Product features:

  • 2in1 nebulizer and nasal aspirator for babies.
  • The nasal aspirator helps to reduce nasal congestion and the risk of respiratory infections¹
  • The nebulizer enables efficient delivery of medication for treating upper and lower airways conditions.
  • Easy to use and hygienic.
  • The aspirator is fully washable with no need for antibacterial filters.

Box contains:

  • Compressor nebulizer
  • Nasal aspirator
  • Nebulization kit with 2 inhalation tops
  • Baby mask
  • Mouthpiece
  • Instruction manual


  • DuoBaby Nebulizer accessory set (contents: nebulizer kit (includes two inhalation tops, baby mask, adult mask, mouthpiece, 3 air filters, air tube) - NEB2012
  • DuoBaby Aspirator accessory set (contents: nasal aspirator, air tube) - NEB7000
  • Air Filter set (contents: 3 pieces) - 3AC408

Instruction Manual

¹ Chirico G et al. Minerva Pediatrica 2014; 66 (6): 549-57

² Based on IHS Nebulizer world report 2014
³ Ozagar A et al. Laryngoscpoe 2000; 110:107-110

A3 Complete

A3 Complete nebulizer

Unique 3-in-1 adjustable nebulizer

OMRON A3 Complete nebulizer provides the complete nebulization solution for a wide variety of respiratory conditions.

One single device can help you treat respiratory infections or chronic conditions of the upper and lower airways. This ranges from common cold infections or allergies to asthma or COPD.

For an inhaled medication to be most effective, it should reach the part of the airways that need to be treated. This is achieved by transforming the medication into an aerosol with different particle size.  Bigger aerosol particles will mainly be deposited to the upper airways, while smaller particles will be deposited to the lower airways.

Product features:

  • Unique 3-in-1 adjustable nebulizer kit
  • Fast and efficient
  • Complete treatment of the upper, middle & lower airways
  • Allows for fast relief for upper airways
  • Small aerosol particles reach deep into the lungs

Read more

Box contains:

  • Nebulizer
  • Child mask
  • Adult Mask
  • Pack of filters
  • Nose piece
  • Mouth piece
  • Instruction manual


  • OMRON A3 Complete Accessory Kit (contents: nebulizer kit, air tube, mouth piece, nose piece, adult mask, child mask) - NEB6001
  • OMRON A3 Complete Air Filters (contents; 3 pieces) - 3AC408

Instruction Manual

MicroAIR U22

MicroAir U22 portable mesh nebulizer

Truly portable pocketsize nebulizer

The MicroAIR U22 is a truly portable, pocketsize nebulizer that will fit in any handbag or briefcase, making it  ideal for the on-the-go treatment of lower airways respiratory diseases like asthma.

Its small size and battery operation give you the freedom to go wherever and whenever you want, having your medication always within reach. You can use it discreetly even in public places.

Moreover, you will never worry again about keeping your nebulizer in the right position. The MicroAIR U22 is the unique pocket nebulizer that can be used in any position, even upside down!

The OMRON MicroAIR U22 also allows for fast treatment, thanks to it’s unique long lasting metallic mesh technology that allows using medication directly without dilution. This technology also makes the device virtually noiseless and allows for up to 1000 uses, so that it will cost you less than 10 euro cents per use!

Product features:

  • High drug delivery rate of more than 0.25 ml per minute
  • Small and discrete size of 38(W) x 104(H) x 51(D) mm
  • Portable operation, weighing less than 100 g, with 2 AA battery operation
  • Functioning in any position: even upside down
  • Virtually noiseless at the low noise level below 5 dB 
  • Long lasting mesh technology for up to 1,000 uses per mesh

Instruction Manual

CompAIR C28P

C28P compressor nebulizer for asthma, COPD, cystic fybrosis, emphysema

Robust and highly efficient nebulizer for frequent use

OMRON CompAIR C28P has a robust design for intensive use, suitable for the treatment of lower airways respiratory diseases like asthma, COPD, cystic  fybrosis or emphysema. 

It is a highly efficient nebulizer that combines short inhalation time with efficient medication delivery, thanks to its powerful compressor and Virtual Valve Technology (V.V.T.).

The high efficiency from V.V.T. adapts to your breathing, thus matching your breathing pattern. This technology reduces drug wastage while breathing out and maximizes drug availability when breathing in.  Also, this nebulizer kit is made of easy to clean polypropylene without the use of silicon valves which are commonly used in conventional nebulizers.

Read more

Product features:

  • High efficiency with the Virtual Valve Technology
  • Powerful compressor for high efficacy
  • Shorter inhalation time
  • Robust for frequent use
  • Compliant with a wide range of medication
  • Suitable for use with children with simple one-button operation

Instruction Manual

CompAIR C801KD

C801KD nebulizer for respiratory diseases in children

Silent nebulizer for babies and children

OMRON CompAIR C801KD  is a compressor nebulizer for the treatment of lower airways respiratory diseases like asthma in babies and children.

It is specially designed for babies and children, thanks to its silent operation and child-friendly design.  CompAIR C801KD comes with a puppet accessory that can be attached to the device to make the inhalation more enjoyable. The device also comes with a child and infant mask for children and babies.

Product features:

  • Designed for the treatment of lower airways conditions, with the particle size of 3.0 µm
  • Suitable for babies and children, with kid accessories and toys included
  • Efficient delivery of medication achieved through Virtual Valve Technology
  • Nebulization rate of 0.3 ml per minute
  • Silent operation at the noise level of 46 dB
  • Small, compact device

Instruction Manual

CompAIR C801

Efficient and silent everyday nebulizer

Efficient and silent everyday nebulizer

OMRON CompAIR C801 is an everyday compressor nebulizer for treatment of lower airways respiratory diseases like asthma. With a low sound level, the CompAIR C801 allows for a very quiet and comfortable operation. The CompAIR nebulizer kit also features OMRON’s Virtual Valve Technology (V.V.T.) which allows for efficient medication deposition.

Instruction Manual

CompAIR Basic C803

C803 light and quiet nebulizer

Light and quiet entry-level nebulizer

OMRON CompAIR Basic C803 is the lightest and quietest OMRON compressor nebulizer for the treatment of lower airways respiratory diseases like light asthma.

This nebulizer provides an excellent value for money for consumers who look for a basic compressor nebulizer.

Instruction Manual

CompAIR Pro C900

NE-C900-E pro
C900 Professional, easy to clean compressor nebulizer

Professional, easy to clean compressor nebulizer

OMRON CompAIR Pro C900 is a professional compressor nebulizer for the treatment of patients with lower airways respiratory diseases like asthma, COPD, cystic fibrosis or emphysema. 

It is built to the highest specifications to provide complete patient care. The device produces a high nebulization rate, thanks to its durable compressor, so that your patients receive more medication where they need it most. 

The CompAIR Pro C900 has an easy to clean and easy to assembly/disassembly design, with help from its unique two-part OMRON Smart Structure nebulizer kit, giving you more time for direct patient care.

In addition to that, the device comes with a convenient handle for carrying it safely if needed.

Instruction Manual

UltraAIR Pro U780

NE-U780-E pro
U780 Hygienic professional ultrasonic nebulizer

Hygienic professional ultrasonic nebulizer

OMRON UltraAIR Pro U780 is a professional ultrasonic nebulizer. The high aerosol output makes it ideal for the medical treatment of respiratory diseases like asthma, COPD, cystic fibrosis or emphysema.

This device has a benefit that makes it easy to clean. The removable water tank can be completely immersed in a disinfectant liquid. A simple solution to a difficult cleaning concern. It also operates completely silently and offers easy touch controls that allow for adjusting the nebulization volume and the air-flow. The backlight display and easy-to-read indicators means operating this device is remarkably simple.

Instruction Manual

Frequently asked questions

  • What makes the MicroAIR U100 different from traditional nebulizers?

    The MicroAIR U100 is a unique portable mesh nebulizer. It efficiently treats a wide range of respiratory conditions from a simple cough to asthma. Unlike traditional nebulizers it is portable, battery operated and virtually silent. It allows you to take your medication wherever and whenever you need it.

  • What is the battery lifetime of the MicroAIR U100?

    One battery set of the MicroAIR U100 will last for approximately 4 hours. It depends on the type of medication and the duration of your treatment how many sessions one battery set lasts. Optionally, an AC adapter is available to save batteries when using the MicroAIR U100 in the comfort of your own home.

  • What is the difference between a mesh and a compressor nebulizer?

    All nebulizers are devices that convert liquid medicine into aerosol droplets that can be easily inhaled through a mouthpiece or mask. The difference is in the technique that is used to convert the medicine into aerosol droplets. A compressor nebulizer uses compressed air to create the aerosol. 

    A mesh nebulizer uses a vibrating element oscillating at high frequency to push medication through fine holes in the mesh, generating aerosol droplets. This technique allows the nebulizer to be very compact and silent. It makes them easy to use on-the-go, whenever and wherever you need it. 

  • How is DuoBaby different to the other nebulizers?

    DuoBaby is a unique 2in1 compressor nebulizer with integrated nasal aspirator for babies. The nasal aspirator helps remove the mucus from baby’s nose and reduce nasal congestion, while the nebulizer, thanks to its two different nebulization kit tops can be used to treat both upper and lower airways. The nasal aspirator can help efficiently alleviate upper respiratory infections symptoms such as blocked nose and improve breathing, but also reduce the risk of developing infections like otitis and rhinosinusitis Most nebulizers only have one position to treat lower airways conditions such as asthma, bronchitis or bronchiolitis. However, babies experience also frequents upper respiratory conditions such as common cold, allergic rhinitis or pharyngitis, which can now also be treated with the help of DuoBaby.

  • What is the difference between the A3 complete and the rest of the compressor nebulizers?

    The A3 complete is a unique 3-in-1 adjustable nebulizer. Thanks to its 3 position settings it adapts the particle size of the medication to target the right part of the airways, while most nebulizers deliver only one particle size and hence target only one part of the airways.

  • What is a nebulizer and what is it used for?

    Nebulizers are devices that can convert liquid medicine into aerosol droplets that can be easily inhaled through a mouthpiece or mask. Nebulizers are intended to be used for inhaling medication for respiratory disorders.

    A nebulizer can be used to treat diseases of the upper, middle and lower respiratory tract. For example:
    - Asthma
    - Chronic Obstructive Pulmonary Disease, also called COPD
    - Bronchitis and Bronchiolitis Pneumonia
    - Rhinitis, also called Common Cold
    - Allergic Rhinitis, also called Hay Fever
    - Chronic Rhinosinusitis

    Read more

  • What type of medication can be used with a nebulizer?

    Most medications for the treatment of respiratory diseases of the upper, middle and lower airways are available on a liquid form and can therefore be used with a nebulizer. Nebulizers also allow mixing different medications in the nebulizer chamber, so that they can be inhaled at the same time for a higher convenience. 
    Read more

  • What are the benefits of using a nebulizer?

    One of the key benefits of inhalation is the fact that the medication is delivered directly into the respiratory tract, allowing for a high drug concentration in the target area.
    Nebulizing medication can even have a greater clinical effect compared to similar or larger doses delivered orally (tablets) or by subcutaneous injection. Studies have also shown that this can lead to better treatment results than using inhalers alone. 

  • What is the difference between a nebulizer and a humidifier ?

    Nebulizers are medical devices that convert liquid medicine into an aerosol, while humidifiers are just used to increase the moist in the ambient when the air is dry (eg when using high heating)

  • What parts of the nebulizer should I clean and how often?

    Depending on the type of nebulizer, the nebulizer can contain several pieces:
    • The main unit or compressor
    • The nebulizer kit where the medication is added
    • The tube that connects the main unit with the nebulizer kit
    • Mesh cap
    • Mouth piece to inhale medication through the mouth
    • Nose piece to inhale medication through the nose
    • Mask
    • Air filter

    Note: Always refer to the cleaning instructions as included in the instruction manual of the nebulizer.

    It is recommended to clean the nebulizer kit, mouth piece, nose piece and mask after each use (but necessary after every day of formal use). They can be washed with warm water and a mild detergent. Then, you should rinse them thoroughly with clean hot tap water and allow to air dry in a clean place.

    Disinfection should be done once a week. This can be done by boiling these parts for approximately 10 minutes except for PVC parts (some masks and tubes) which can harden and deform when this is done. Alternatively, use commercially available disinfectant. Thoroughly rinse with clean water after disinfection; follow the instructions given by the supplier of the disinfectant.

    The casing of main unit and the tube do not require extensive cleaning, but can of course be cleaned using a soft cloth with water and a mild detergent. Wipe the casing and immediately dry using a soft clean cloth.

    The air filter should not be washed. In case it was to become wet it should be replaced to avoid blockages.

    Specifically, for a Mesh Nebulizer: the mesh cap should be cleaned after each use:
    • Fill the medication container with water and nebulize the water. To prevent medication from drying and adhering to the mesh after use, nebulize the water for 1 to 2 minutes.
    • Then wash the mesh cap in mild (neutral) detergent, and rinse with clean water. Allow to airdry in a clean place.

  • How often do I need to replace the different parts and where can I buy them?

    For most nebulizers, it is recommended to replace the nebulizer kit, the mouth and nose piece, masks and tube every year. Air filters should be replaced approximately every 60 days. Specifically, for the Mesh Nebulizer, it is recommended to exchange the mesh cap after approximately 1 year.

    To find replacement items or additional accessories for your OMRON nebulizers, please contact your usual distributor.

  • As of which age can a nebulizer be used?

    Nebulizers are appropriate for the use of babies and children. 

  • The standard OMRON masks (adult or child), is made from PVC (Poly Vinyl Chloride), is a more durable material available? Are the adult and child masks as well as the mouthpiece Latex free?

    OMRON also offers a SEBS (Styrene Ethylbutylene Styrene, an elastomeric material), mask in both an adult and child version. It is more costly compared to the PVC but can be boiled for through cleaning. Do NOT attempt to boil a PVC mask, these will quickly harden and deform if this is done.

    All adult mask, child mask and mouthpiece are made of latex-free PVC (Poly Vinyl Chloride) or SEBS.

  • Can the MicroAIR Nebulizer be used for treatment that requires continuous or intermittent flow?

    The MicroAIR U100 is designed to accommodate your needs for either type of operation. Follow the instructions of your healthcare professional regarding your treatment plan.

Didn’t find the answer you were looking for? Find a distributor in your country