MicroAir U100

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

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 nebulisers. It is virtually silent and the unique design enables usage in any position. Even while lying down, making it more comfortable for smaller children.

1. Compared to most compressor nebulisers

Product benefits

Truly portable

Truly portable, pocket-sized and battery operated. Now you can take your medication wherever and whenever you need it.


The mesh technology, unlike compressor technology in regular nebulisers, allows for virtually silent formation of aerosol. You can use it discreetly without disturbing others.

360° operation

The unique design of the MicroAir U100 enables usage in any position. Even while lying down in bed, making it more comfortable for smaller children.

Unique mesh technology

The MicroAir U100 uses a unique mesh technology which makes it more comfortable to use than traditional nebulisers.¹

High efficiency

Thanks to its higher aerosol output it helps to effectively treat many respiratory conditions from a simple cough to asthma.

Features and cautions

  • 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

This product is intended to be used with medication (prescribed by your GP) or Saline. Please note that these are not included with the purchase of this Nebuliser.


  • Device Type : Mesh Nebuliser
  • Targeted respiratory airways : Lower Airways - Asthma - Bronchitis - Bronchiolitis - COPD
  • Age range : Baby, Child, Adult
  • Nebulisation rate : > 0.25 ml/min
  • Medication quantities : 1-10 ml
  • Battery Type : 2x AA Batteries
  • Mains operation : Optional
  • Sound (dB) : 20 dB
  • Particle size (MMAD) : 4.5 μm
  • Weight (kg) : 0.12
  • Item dimensions (mm) : 38 x 60 x 130

What's in the box

  • MicroAir U100 Nebuliser
  • Unit Cover
  • Medication Container
  • Mesh Cap
  • Mask Adapter
  • Mouthpiece
  • Adult Mask (PVC)
  • Child Mask (PVC)
  • Soft Pouch
  • Instruction Manual
  • Quick Setup Guide
  • 2x Batteries (AA/LR6)


3 years after date of delivery in accordance with the Warranty Card or the Instruction Manual inside the product packaging.


What is the difference between a mesh and a compressor nebuliser?

All nebulisers 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 nebuliser uses compressed air to create the aerosol.

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

What type of medication can be used with a nebuliser?

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 nebuliser. Nebulisers also allow mixing different medications in the nebuliser chamber, so that they can be inhaled at the same time for a higher convenience.

What parts of the nebuliser should I clean and how often?

Depending on the type of nebuliser, the nebuliser can contain several pieces:

  • The main unit or compressor
  • The nebuliser kit where the medication is added
  • The tube that connects the main unit with the nebuliser 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 nebuliser.

It is recommended to clean the nebuliser 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 nebuliser: the mesh cap should be cleaned after each use:

  • Fill the medication container with water and nebulise the water. To prevent medication from drying and adhering to the mesh after use, nebulise the water for 1 to 2 minutes.
  • Then wash the mesh cap in mild (neutral) detergent, and rinse with clean water. Allow to air-dry in a clean place.
More Information
Manufacturer Omron
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MicroAir U100
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