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Old 03-06-2010, 08:43 PM   #1
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Heating/cooling/sound proofing a new home theater

I'm trying to get ideas on how to make my new home theater as comfortable as possible. I'm putting a heated floor in which will help with the cold cement and keeping the feet warm. However, I've got a couple of concerns that I need to address and I hope someone out there has been through this already...

First, I live in MN so I have extremes in climate; cold winters hot summers. During the winter I pretty much have to run the furnace fan 100% of the time to keep the humidity up around 33-35% so my woodwork doesn't shrink too much.

1) I'd like to keep the room at an even temperature. This means, before entering the room I'd like it to be X degrees and then after I fill the room up with people and turn on the projector I'd like it to stay that temperature. I've got a feeling that with people and the projector being turned on that the room will get hot quickly. I'd need to be able to cycle the air in the room without creating a lot of noise. I believe tapping into the existing heat and cooling will not work without zoning off this room. I'm not sure what is done to cycle hot air out of the room in the winter time though...

And that leads into my next issue/question...

2) I've got the metal heat supply and cold air return running through the middle of the room. While it would be easy to tap directly into these units, I'm concerned with allowing sound into the duct work. I'm spending a lot of money sound proofing the room and I don't want to bleed sound through this source. I've spent a lot of time researching sound proofing and found that 2 right angles pretty much will deaden the sound. I also will probably use flexpipe to further deaden the sound.

Has anyone run into this and care to share their experiences or have an idea on what I should expect?

Thanks much.


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Old 03-07-2010, 12:19 PM   #2
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If your installing radiant floor heat. You don't heat the room to 70 like you would other rooms/areas.
Just to 65, maybe 68 at the most. The radiant heat will make people feel warm. And then after the people and equipment are putting heat into the room. You won't need the floor to continue to heat the room.

As for noise. Your current duct system may be too small to handle the theater room. And it may be loud. Unless you use large, low velocity grilles.
Which do tend to allow noise to escape back into the duct work, and travel through it.

Often works best. If you zone it. And use duct board and flex duct to conditioned the theater room.
Do you have room to run a new supply and return to the room from where your furnace is.


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