On 3/5/2011 8:22 PM, Michael Dobony wrote:
On Sat, 05 Mar 2011 22:52:57 +0000, mencarj wrote:
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wrote:
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basement stays around 55 degrees. I know that it is considered very
impractical to install it outside. What are the pros and cons of
installing an air source heat pump in the basement? The relative mild
temperature there should allow for very efficient heating.
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Personally I think it will work ,as a HVAC Contractor with 35 years
experience and just as many working/installing Heat Pump systems, here\'s
my opinion, First they make a air source heat pump using a 12000 btu air
source heat pump to heat hot water, ...
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Look at how a heat pump or AC works (heat pump is AC in reverse). One coil
gets hot and the other gets cold. If you want a 20 degree rise in temp
upstairs you will get a 20 degree drop in the basement. That is assuming
100% efficiency. Eventually the basement will have to get as cold as the
outside or colder in order to get a sufficient heat rise in your living
space....

And as well that's assuming the same volume of heated space as compared
to the basement (which may be reasonably close for a ranch style w/ a
full unfinished basement, but for anything w/ partially finished
basement or larger heated area in comparison, the ratio would be 1:1 by
that ratio of volumes.

It's a worthless idea; there's not even remotely close to the required
heat source/sink heat capacity available; the water heater idea works
only owing to it being a much lower demand in comparison to space heat.

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