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    hello, new to the forum, question about passive solar hot water heat..

    Hello all. I am just trying to figure out ways to inexpensively make a dent in our heating costs. We live in upstate NY (zone 4) with temps down to -20 at times in the winter. our house is gigantic and ooooold and a money pit. We have insulation in the attic and under the floors. Thats it. We...
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