Action first
How to keep a home cool while away
Short answer
Leave safe shading in place, switch off avoidable heat sources and use only secure, designed ventilation.
What to do
- ✓Close blinds or shutters on sun-facing windows.
- ✓Turn off unnecessary equipment.
- ✓Do not leave insecure windows open.
- ✓Use timed mechanical ventilation or cooling only if designed for unattended use.
Why it works
This advice follows UK Health Security Agency guidance and the underlying principles of shading and security.
Important exceptions
Safety, health, weather and the design of your home can change what is appropriate. Stop if an action makes conditions worse.
Related guides
Sources & evidence
Reviewed 2026-08-21
- UK Health Security Agency: Beat the heat: keep cool at home checklist ↗
Supports: Shading, ventilation, reducing indoor heat and protecting people at higher risk.
official guidance · Accessed 2026-08-21