Travel Smart

"If you’re going away in summer, turn your hot water off. If you’re going away in the winter, turn your hot water and heating down to the lowest level that will still ensure your pipes don’t freeze."

https://www.ovoenergy.com/guides/energy-guides/120-ways-to-save-energy.html?fbclid=IwAR1wQh1FPGcj1n_MkLYySqEDAnP8vMEcVQr_RL0sM8HWblsTeXH7j2WWfdw