Our home is a split level, with 5 floors – basement, den, kitchen, bedroom, master. Each of those floors is mostly open EXCEPT the bedroom floor, which is 4 separate rooms.
A HVAC contractor we got a quote from recommended a ductless system+heat pump with 3 indoor units. One on the kitchen floor, one on the bedroom floor, and one in the master.
What I don't understand is how a single unit on the bedroom floor would effectively heat or cool all 4 rooms on that floor. Most of those rooms have their doors closed all of the time, which would greatly hamper air circulation (and therefore temperature circulation). With the current AC, each floor has a vent, so it's not a big deal. But I don't understand how it would work with ductless.
Can a ductless system effectively cool a floor with multiple rooms if the rooms have their doors closed most of the time?
Best Answer
With the doors closed and no evaporator in the room how is the cooling going to get into the room. In short it will not work with natural flow and the doors closed. On my 1930's home we have a 3 zone currently. The living room and the kitchen/ dining and the the master each have a unit. The other 2 bed rooms only get cooling / heat when the doors are open but since these only get used when relatives or grand kids are here we have not put a second unit in. I may add a second unit on the other side of the house for the 2 bedrooms and a small office but at this point it is not needed because we heated with wood for so many years we are used to having our doors open and that saves because we still use partial wood most of the winter as I am getting lazy LOL.