I would like to put the upstairs on one zone and lower the temp during
the day and put the downstairs on another zone and lower that temp at
night. A friend of mine just put in electric dampers and another therm.
and says that is o.k. But I have read that you have to either bleed
some pressure through the damper or recycle it back into the return so
the pressure in and out of the unit is balanced correctly.Would it
really make a difference in cost and or comfort.Any comments good or
bad would be greatly appreciated. Thanks again for your time.