
Saw this on r/homeowners and it got me thinking, is there a product like this that works in reverse (instead of blowing air into the room it pulls air out of the room)?
I live in an old apartment building with terrible ventilation. My bathroom does not have a fan, but it has a vent that is this shape. I saw someone talking about these "register boosters" that basically act as vent-shaped fans pulling cool air from the vent into the room. Now, I don't need that, but it would be awesome to have one of these work in the OPPOSITE DIRECTION: a fan that pulls the hot, humid air out of the bathroom and pushes it into the vent. Does such a thing exist? This seems like it'd be such an easy quality of life improvement and would only require unscrewing the existing vent cover and screwing in the new one.