Only one room doesnt get cold
We recently purchased a house and the master bedroom is the furthest from the furnace so it gets very weak air flow. The rest of the house gets quite cold but that room doesnt. I was looking at maybe getting a register booster fan would that work? Also the vent is 10x10 and I cant even find a register booster fan for that size. So what should I do? Is there another recommendation I should try? Im a complete novice and and not familiar with hvac or really DIY in general.
Thanks