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Old Gravity Hot Water heating system

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Steamhead (in transit)
Steamhead (in transit) Member Posts: 6,688
in THE MAIN WALL
the system pressure isn't that much greater, you shouldn't have trouble with leaks.

The right way to size the new boiler is with a heat-loss calculation. With a properly-sized boiler the radiators won't get quite as hot, but they will heat the house properly on design day.

Why buy more boiler than the house needs?

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  • Rob Decker Wallington Plumbing
    Rob Decker Wallington Plumbing Member Posts: 1
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    Old Gravity Hot Water system

    I have a customer who is going to change an old gravity hot water system to a new forced hot water.Will the cast irom radiators leak. Also how would I size my boiler from the sizes of the radiator.
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