timmmay:
The biggest thing we do is heat the house consistently in winter, so it warms through. Weekend and days we're home heating is on from 6am to 10pm, turned down a bit when we go out. Weekdays it's on 5am to 7am and then 3pm to 10pm, even though we're not home until 5pm. On super cold days we turn it down to 18 rather than off. Even though it's off a bit the house stays warmed through, so we're not heating it from really cold.
As my father used to say in winter you have to heat the bones of the house, once they’re warm it’s easy to keep it warm.
Insulation helps keep the bones warm.