COMMUNITY FORUM

BV002709

10:22AM | 12/03/13
Bvhvac
One bedroom in our 3 bedroom ranch gets very hot during the night, it is the one at the end of the hall and the furthest away from the oil burning furnace. Is there anyhitng we can do to reduce the heat in that room?

Duane, Moderator

10:05PM | 12/03/13
Member Since: 11/14/13
75 lifetime posts
There are several things you can try,
First you can try closing the vent to 50% open.
The better option would be install a damper at the trunk duct ( main duct from furnace) this has to be manually opened or closed and will require a hvac company to install.
Closing the door to that room will help as well.
This problem is typically caused from improper sized duct work and or the supply line from the main duct that is installed in the end cap of main duct.

I hope this helps.
Duane Cotton
bobvila.com expert moderator
www.buildamericaconstruction.com
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smith01

12:54PM | 12/04/13
Member Since: 11/20/13
9 lifetime posts
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Unless I am missing the point completely, what I don't understand is why does the room get hot during the night. Does it remain cool during the day. Secondly, if it is farthest from the furnace, should it not be cooler. Thirdly, if as pointed above, this is the result of improper size duct work, can this not be remedied.

BV000193

09:15AM | 12/07/13
Maybe at one time the room was being too cold and someone monkeyed with the dampers. At any rate it's difficult to give a diagnosis over the internet without being there to see what is going on.

Duane, Moderator

09:57PM | 12/07/13
Member Since: 11/14/13
75 lifetime posts
Do you close the door to that room at night ?
Because the room is the farthest from the furnace does not always mean it will be the coolest, the trunk duct ( main duct from the furnace) supplies the vents with heated air, if it is not properly sized or the duct to the room in questions is installed out of the end of the trunk ( main) duct it can move more air then is designed, the main trunk duct needs a end cap installed. This is to cause back pressure or static pressure in the duct, and supply each vent with equal pressure. If the end cap is not installed a larger amount of air will travel the path of least resistants and move much more air to the room then the others causing the room to heat up faster then the rest.
This problem can be remedied by a hvac contractor.

I hope this information is helpful .

Duane
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