Sweltering in our new build, the bedroom is an oven. Last summer we had the fan plugged in and on all night and I thought nothing more about it but since then I saw a post shared by the local fire service on social media saying it’s dangerous to plug in appliances overnight as is a fire risk
YABU - people have being doing this for years / mine is on as we speak / it’s fine
YANBU - knock it off and deal with the heat in some other way