sense to lower the thermostat temperature since everyone will be in bed and wrapped their bed sheets. to save money, you really should drop the temperature down at least 2°c and perhaps go as low as 3°c and see what the response is from everyone in the house. i’m sure they won’t notice.
if there’s one person in the house that finds it cold at night, rather than increase the temperature for the entire house then buy them a small space heater for their bedroom. this is much cheaper than heating the entire house to please one person.
when nobody is home there’s no need to have a warm home. so, the 