Asthma spacer – how to use one correctly
A South African inhaler-and-spacer technique guide for adults and children, including when a mask or mouthpiece is used.
A spacer can make metered-dose inhalers easier to use
A spacer holds the spray from a suitable metered-dose inhaler briefly so it can be breathed in more effectively. The National Department of Health advises spacer use for inhaled medicines across age groups, with the device and technique matched to the person's age and ability.
Single-breath technique for an older child or adult
- Remove the caps and check the spacer is ready.
- Shake the inhaler and connect it to the spacer.
- Place the mouthpiece in the mouth and close the lips around it.
- Breathe out, press one puff into the spacer and breathe in slowly.
- Hold the breath if able, then breathe out as instructed. Repeat only for each prescribed puff.
Younger children may need a face mask and several normal breaths through the spacer. A nurse, doctor or pharmacist should demonstrate the age-appropriate method.
Keep the technique reliable
- Use one puff at a time unless the product instructions say otherwise.
- Wait as instructed between puffs.
- Rinse the mouth after an inhaled corticosteroid when advised.
- Take the device to a review so the fit, cleaning and technique can be checked.
Technique cannot replace an asthma action plan
Common questions
- How do I use an asthma spacer?
- Connect the prescribed metered-dose inhaler, breathe out, release one puff into the spacer and breathe in using the demonstrated technique. Ask a professional to check your method.
- Do children need a mask with a spacer?
- Infants and some young children use a spacer with a face mask; older children usually use a mouthpiece when able. The child's healthcare professional should select and demonstrate the device.
Sources
- Primary Healthcare STG and EML, Appendix II: Respiratory devicesNational Department of Health, South Africa
- Primary Healthcare Standard Treatment Guidelines and Essential Medicines ListNational Department of Health, South Africa
Last reviewed 26 August 2026.