Probably minutia, but here goes........Are there any low-resistance ceiling registers or does it matter?
We have a fairly large room at the tail end of the duct work that only has one register and its warm in summer and cold cold in winter. This will be corrected when our shiny new heat pump is installed, but we're talkin' about the interim.
I'm tempted to just take it off and leave a huge hole there but the better half said, "uh, no" The damper is fully open, there's no dust or lint clogging it-it just doesn't get alot of air through it.
So, in a nutshell: a) are there higher-flow,lower-resistance ceiling registers out there
b) live w/until my house gets new ductwork
c) keep the thing off