new homeowner, attempting to fix the upstairs before it gets too hot without getting a second HVAC. Right now, it will be 72 downstairs, but 84 upstairs. We've got a new ecobee thermostat with a sensor upstairs and one downstairs (the thermostat). it attempts to balance the two and has helped some. We had an entire new HVAC and ductwork installed our first week as the existing system died and ducts were full of mold. Looking for any suggestions on how to keep it cooler.
I am about to replace the insulation on the walls as i have attic access to some of them. (current is yellow and damaged from a rodent). After i finish my electrical work i plan on adding a few more inches of blow in. I've also closed about half the dampers downstairs to push more air upstairs.
other than having a second HVAC unit installed dedicated to upstairs is there any other suggestions one can think of? I have a 16 SEER monster unit. 2400 sq foot home, told the unit can cool 3000. upstairs is only 2 bedrooms and a bath- 4 registers. The house originally had attic fans that had live wires going to nothing in the attic i just removed (aluminum wiring...) should i consider adding new fans? This is not my area of expertise, thanks for any suggestions!
not opposed to an upstairs HVAC, but i will be paying off the downstairs one for a bit so adding another is not doable for a while...