Hey i dunno if this is they way civic are in the winter but my cars not heating up enough to make me shut it off for a bit. I have the car running full blast on pure heat and its only making it comfortable enough to drive. Even on long trips its not warming up as much as i think it should be

Ive heard of people sticking carboard in front of their rads and stuff. Does anyone have a take on what could be the problem??