You're right in a sense. I would certainly notice the change if it happened very quickly. However, I would quickly adapt and think it was just normal. (Mind you, my room is about 17 C at the moment.)
Certainly, if someone told me my room was going to be 2 degrees hotter permanently, I wouldn't think twice about it.
Certainly, if someone told me my room was going to be 2 degrees hotter permanently, I wouldn't think twice about it.