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Witten by Bernard Morgan (Engineer) & Adam Apperley (Marketing). Published: January 26, 2024. Updated: February 8, 2024

Should I switch off my boiler when I go on holiday?

When planning a holiday, deciding whether to turn off your boiler or leave it on is an important consideration. The decision largely depends on the time of year, the age and condition of your heating system.


  • In summer, it’s usually safe to turn off the heating, especially if the boiler is old or not regularly serviced.
  • In winter, it’s advisable to keep the heating on to prevent pipes from freezing, especially with modern boilers.
  • During spring and autumn, treat April like a winter month and August and September like summer months.
  • Consult a professional if you have an old or worn-down boiler, regardless of the season.
  • Utilise smart heating controls to manage your heating while away.

Seasonal Guidelines

  • January to April: Keep heating on with a modern boiler. Consult a professional for older boilers.
  • May to September: Safe to turn off heating. For older boilers, seek professional advice.
  • October to December: Similar to January-April, keep heating on with modern boilers and consult for older ones.

Smart Heating Management

  • Set a heating timer to control when your boiler comes on and off.
  • Lower the thermostat to around 15°C to 18°C to save energy and prevent freezing.
  • Turn off the hot water tank function if your system has one, as it’s unnecessary during your absence.

Additional Considerations

  • Modern boilers may have an anti-freezing setting; refer to the manufacturer’s manual for optimal thermostat settings.
  • Regular servicing of boilers is crucial for safety and efficiency.
  • Consider upgrading to a modern boiler for better safety features and efficiency.
  • Boiler finance options are available for budget-friendly upgrades.

Essentially, the decision to turn off your boiler while on holiday depends on the season, boiler condition, and your specific household needs.

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