Who controls the thermostat in your home?

https://youtu.be/C05qUz1ukWo?si=aiEbp8D9TrV2qiWw

It was my dad until my parents divorced. My mother kept it about the same after though. It was a big, old house with old windows and an old furnace. So it was expensive to heat, and we didn’t have willy nilly thermostat money. Especially after my dad was gone.
Who controls the thermostat in your house?
Who controls the thermostat in your home?
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