I hate waiting for hot water. Also, why not heat the living space only?
You need the heat in the living room not next to the slop sink.

wrote in message
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This is 400' of copper for baseboard heating there is about 100'
additional
3/4 and 1/2 inch hot water to faucets and shower....the crawl space is
insulated and the basement is not .... both get real cold in winter. tia