A fan can be useful within suitable conditions, but buying a larger one does not guarantee protection from severe heat. Start with official heat advice, the room and the person who will use it.

Check the intended use
Compare stable placement, accessible controls, guarding, noise and the space available. Read the manufacturer's instructions for the particular product. Consider children, pets and people with limited mobility so the fan and cable do not create a trip or contact hazard. Do not use damaged equipment or improvise an electrical supply.
- Choose controls the user can operate.
- Check recall and safety information.
Keep the temperature limitation in mind
UKHSA and NHS public guidance advises fan use below 35C. Do not rely on a fan alone in very hot conditions or as a substitute for a suitable cooler environment. Ask care or healthcare professionals about individual needs rather than assuming the same setup suits an infant, older adult and healthy worker.
- Monitor the room conditions.
- Keep suitable drinks accessible.
Use a wider cooling plan
Reduce direct sun with suitable shading and admit cooler air only when safe and appropriate. Turn off unnecessary heat-producing equipment where it can be done safely. If the room cannot remain suitable, use a verified cooler destination and seek help early. Follow current official advice if smoke, outages or other hazards complicate ventilation.
- Keep exits and walking routes clear.
- Have a plan that still works during a power cut.
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