I am pretty sure you don't put a return in baths and kitchens... how do you return that air.... (central !!!)
These two areas generate more internal gains (btu) then any where in the home.
So you plan on dragging that air only by the T-Stat ?????
Last Call !! If ducts are outside the conditioned space in extreme temps your shoving supply air and return air thru..... and bringing back supper heated air temps not from inside the home..... how dose the TXV react...
Dose it say.. open up the flood gates temps are bad ????
Or dose it say.... load up the accumulator low DT things are great ???
I am not clear on this one ???????
Should we start a new thread on this one ?????
I have worked hand & hand with most of the "Building Scientist Guys" and "Central Return & Jumper Ducts Is It"