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  1. Adding Hot water Heater To Boiler

    Plumbing
    I have a boiler that heats the domestic hot water with a tankless coil. Burning oil in the summer drives me crazy so I'm adding a GeoSpring hot water heater in line. I'm wondering whether to put the hot water heater before or after the boiler. Seems like 6 of one and 1/2 dozen of the other...
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