Open your curtains during the day. Let the sun paint your floor with heat. It’s free energy from a giant nuclear ball.
Close them at dusk. Yes, even if it’s sad. Thick curtains trap heat like a hug. You lose 10% of your warmth through windows. Fix that.
Fun fact: Thermal curtains are cheap. Or just use a blanket. Tape it over the window. It’s ugly. It’s genius.
