Friends vs. Him help!!!

So my man or whatever you want to call him lol is out of town. And he went back to the south for the holidays. We live in the Midwest where it’s kinda cold right now and this week it’s going to be below the 20’s. He turned the heat off when he left. When my friends and I went back over there we turned it back on so his pipes wouldn’t bust! I let him know we turned it back on and he still wants it off. Now keep this is mind, apartments usually tell tenants to keep their heat on to prevent this issue. But he doesn’t want his bill to go up. Im thinking he is from the south so he prbly doesn’t understand that it gets that cold right? Would you listen to him and turn it off and get the chance of his pipes breaking or listen to the ladies who were born and raised there and say keep it on but turn it low? I’m asking cuz I don’t want him to get upset that I didn’t listen to him and blame me for his bill going up or something lol. He’s not that type of person but yet I’m still getting to know him. I guess this will be a test. Hah.