Sorry might sound like a silly question but I'm not sure.
So there are vents in two of our windows in our bedroom. It's -1 at the moment and windy and the bedroom although the heating has been on is a bit chilly. We have our 1 year old in the room with us so don't want him to get chilly whilst sleeping. Is it okay to close them? I'm not sure if it is okay or if they need to be open? If they can be closed I'll re open in the morning.
Probably a stupid question but I really don't know. TIA!