I know a house where it is always freezing and it's definitely stinginess, funny enough the parents are from the country and it seems their child copied it from home. Anyway she wouldn't even make you a cup of tea and doesn't like to do a big shop as it costs so much and the food just sits in the fridge.
It's about what you're used to, my house is warm but then my parent's house is always warm.
I also knew a German girl who in the height of last winter's snow etc did not allow the heat to go on in the house, her housemates were fit to kill her, she kept turning it off. She unscrewed the lightbulbs in half the lights too to save on the bills. Oh and she would sit eating her dinner in a coat and scarf inside and when they it's freezing we're putting on the heating she'd be like No it's OK. Their response well why is your coat on???