It definitely is. I live in the US, and my house has 3 separate "zones" for heating and cooling. Programmable thermostats turn things off and on automatically

It definitely is. I live in the US, and my house has 3 separate "zones" for heating and cooling. Programmable thermostats turn things off and on automatically based on a pre-set schedule, and the schedules can also be overridden. The result is that we're generally only heating or cooling the parts of the house that we're using.