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what size boiler woul you recommend?
I'm converting from oil to natural gas. Having a new boiler installed. Did a heat loss using SlantFin's program & came up with about 40K BTU/hr. It's a 1000 sqft ranch in NJ. Hot water baseboard and an Amtrol indirect 41 gallon with electronic controls. What I don't know is how many BTU's the indirect uses. Does anyone know what the average usage could be. Or maybe what the max BTU's it's capable of using? I just want to make sure the boiler will be big enough to satisfy the demand.