I’m glad found this site lot of good information…….
I'm having both Furnace & AC replaced(Furnace is Heil 90+ 125,000, AC 3.5 or 4 Ton Heil both are original equipment 20+ years old, AC is leaking and won’t hold charge for the summer). The house is a quad level, top floor is 3 bedrooms & 2 baths and the location of the furnace, level 2 is kitchen, living room & Dining room, level 3 is Den and bath, 4th level is basement, basement is the only level with door on the steps. Level 1 & 3 are feed from the same side of the trunk while levels 2 & 4 are feed from the other side of the trunk. T-stat is located on level 2. In current system, temp vary a lot between floors,
would a 2stage with VS blower help evening the temps out?
Other suggestions on trying to get better balance of temp though the house?