Quote:
Originally Posted by stevej37
water heater...waste of money..already insulated.
pipes..easy/cheap to do with the split foam insulation. Might help somewhat.
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^^^^^^ This. I don't have a basement but a raised floor construction. My water heaters are tankless and my copper pipes are insulated with the split foam insulation. I'd do that if I didn't have it, but the savings in terms of having to heat water is minimal. The amount of time between hot water usage throughout the day allows the pipes & water in them to cool, so the cool water has to be flushed most of the time anyway.