Posted by VaTom on December 28, 2009 at 15:01:29 from (216.12.124.38):
In Reply to: Re: ENERGY SAVINGS posted by 440roadrunner on December 28, 2009 at 12:23:11:
You're correct, annual heat storage won't retrofit well. You're incorrect that there's nothing worthwhile to do for existing houses. Solar domestic water heating for instance. It will pay for itself if you try. Or a heat pump water heater if you need dehumidification where you live and can use the cool dry air byproduct in your house. Mine was a 1.5 year payback, well over a decade ago. Still working fine, only one pump repair.
If you used an infrared temp sensor you could follow the heat loss around your house. Usually, there're inexpensive improvements that you could do if you were inclined, that all add up to fast return on your investment. Windows are a good place to start. How much heat are you losing there? What did you pay for that heat?
If you never examine any of those "scientific doo-dads" you for sure will never see a return. Those that do, can sort the good ideas from the poor ones.
As for annual heat storage, it's cheaper to build new than conventional stick construction. Our last house, for a client, appraised 50% more than it cost to build, immediately on completion. That was a direct comparison to stick-built, the appraiser completely ignored the energy savings. Needless to say, the client was tickled. Promptly went out and bought a new truck.
He's now commuting 210 miles round-trip (3 days/week). That's insane, but he won't give up the house. Too comfortable/cheap.
BTW, I wouldn't recommend ground source heat pump on a new house here. They work great, but not inexpensive. Figure out how to beat that incredibly high installation cost and you'd really have something.
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