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Old 02-09-2009, 09:12 AM   #1
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natural heat pump idea


Currently my two story home has a built out daylight basement, obviously the 'basement' is much cooler then the rest of the house. I have had a Idea I wonder if its worth my time.

I would like to put a hole in the intake for the heating system in the basement so that in the hot months I can turn off the intake upstairs and just pull cool air from the basement to the whole house. by running the fan only.

is this a good project?

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Old 02-09-2009, 11:22 AM   #2
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natural heat pump idea


The short answer is: it depends.

Ignoring any potential code issues, there are a few other things that you may want to consider. First is the fact that your air conditioner does more then lower the temperature of the air; it also lowers the relative humidity of the air. So while the air in your basement may be cool, it may also be relatively humid (which may only get worse with the A/C off). So you may not want to spread that around the house. The second thing is that if you basement has any odors, those two will be spread throughout the house.

Then there is the whole code issue. Many places won't let you use your basement as a plenum, which you are kind of doing here.

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Old 02-09-2009, 01:24 PM   #3
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natural heat pump idea


The other problem is, the cool air in the basement would be gone in a matter of minutes.
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Old 02-09-2009, 02:04 PM   #4
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natural heat pump idea


thanks for the 411 - I have no AC or heat pump right now and likely wouldn't put one in for a long while as I have more pressing projects that want to get done. (like a hot tub)
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Old 02-09-2009, 02:46 PM   #5
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Also a safety issue to think about is this idea could put your basement in a negitive pressure and cause the hot water heater to backdraft among other problems like drawing in radon gases.
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