I hope you haven't had this question too many times in the past, but we're trying to figure out how to get better heating/cooling in an uninsulated bedroom over an un- air conditioned garage. House is circa 1950. Forced hot air with a leaky duct system and a very long duct run through un-air conditioned space (crawlspace,then through garage up to bedroom). We will eventually have to move our toddler into this room of extreme temperatures...I know kids are oblivious to that kind of thing but we need to do something.

We're leaning towards a booster fan from fantech. Any experience installing these? Results? Is there hope for us without having to rip out the garage ceiling and insulate?