Heating Vents Open or Closed??
I have a three story home, heated by a heat pump, with auxiliary boiler which kicks in at low outside temperatures.
The floor plan is a-typical then one would traditionally think where by the link to each floor is typically only the stairwell.
The top floor overlooks the second and first floor, the second floor over looks the first floor. The third floor, has two bedroom and an open den which over looks the other floors as described above. The ceiling is flat, yet slopes down to the second floor.
The main open link between the floors is the living room located on the first floor, whereby the windows go all the way to the third floor and hence it is open to each floor above.
As you can imagine the heat rises directly to the top floors. The set back thermostat is located on the second floor. It is generally cooler on the first floor.
My question is whether or not to keep the third floor vents open or closed. There is one vent in each of the bedrooms, one in the bathroom and two in the den.
By closing them am I making the system work harder, or is it better to keep them open. Obviously it gets warmer on the top floor, however I am more interested in knowing if this makes the system run harder etc.
We keep the stat at 73 during occupied hours and set it back while away and asleep.
(In the summer I generally do not run the AC, however same question in the reverse goes for closing the vent down stairs and keeping them open on the second and third floors??)
Thanks and regards,