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Old 01-06-2012, 08:46 PM   #1
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sealed room


Today i bought a window ac unit and had it installed in my room because my room was not warm/cool enough during certain seasons. When i completely seal off my room, my room vent from the ceiling stops blowing air completely...When i remove the door seal from the bottom, it blows air from the vent on its own again...any ideas why this is happening.?

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Old 01-06-2012, 09:22 PM   #2
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sealed room


You are trying to pressurize your room that's why the air stops.

You need air to go in AND air to go out. The air going under your door is finding it's way to the return duct.

Without a return in your room, once you seal off the door you won't have air flow.

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Old 01-06-2012, 10:02 PM   #3
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sealed room


That's why the a/c slams doors open and shut.

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