Quote:
Originally Posted by Chas H
I tried using only the furnace to heat water but there was too much variation in the temperture. And the furnace coil had only 1/2" fittings, whereas the electric heater has 3/4". The water from the furnace is mixed with cold as it enters the electric heater to temper it and increase flow. I can shower while doing laundry or running the dishwasher without a change in water temperature or flow.
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No question about the benefits of the electric heater..........the problem is the huge cost increase.
BTW, a 1/2" line will flow far more water than the furnace, or the electric water heater, could possibly make.