OMG I go through thermostat wars with H all the time. MIL has not been to our house in years, mostly because she lives in florida, so thank goodness I don't have to listen to her. lol. He keeps the heat up and I can't stand it hot. We have kind of come to a compromise, well in his mind we have, he has agreed not to put plastic on my windows in my bedroom or bathroom.... lol I am in my BR every morning with the window opened trying to breathe, OOOO and I also have my vent in there shut off.
If everyone in your house is comfortable, then heck with the MIL
