Hi. I'm thinking of installing a cold air return from my second floor's coldest room all the way down to the basement where my leisure line stove is. I would like to make the stove part of a closed loop in the return and feed it to the return side of my first floor air handler. I have Hydro-air with a air handler in the basement and one in the attic. I would keep the first floor's air handler's fan on all the time to let it draw the air from the new second floor return through a special jacket I can make on the stove and distribute it through my first floor. Right now my basement is 75*-80* with just some heat on the fist floor. The laundry is dry in about 5 hours.
My questions are will the A coil and the water coil act like a heat sink and will I lose to much heat, or once they reach temp it shouldn't matter, and has any one tried this? I can adjust my blower speed to low at 655 CFM and save about $50 per month on my electric bill. Is this enough air? What size should I make the return from my second floor to my basement and does one type of duct flow air better than another? I have to run the return through a unheated garage, can I use a flexible insulated duct? Sorry for all the questions, been thinking of this for a while.