Whole house ventilation

Old 03-23-06, 06:41 AM
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Whole house ventilation

Are ventilation systems designed to have all vents open for optimal temperature? I ask because my wife shuts vents off in some rooms we aren't in all that much thinking it will increase available air to the rooms we are using. But I'm starting to wonder if that method is actually making our house colder and is somehow affecting the overall air flow throughout the house.

Thanks for any input.
Old 03-23-06, 04:01 PM
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When a heating/ac/duct system is designed it is sized so that all rooms get the correct amount of air to heat or cool it.
The dampers are designed to fine tune the air flow to balance the flow but are not designed to shut off unused rooms.
To do so will upset the system balance by restricting the amount of air going through the furnace or air conditioner, causing uneven temperatures as you mentioned.
If you were to go overboard on closing vents it is even possible to damage your furnace or a/c.

You would save money by lowering the thermostat instead.

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