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Attempt to size new boiler with insulating pipes?
Sizing replacement boiler for a rotted WM 78. I busted out the Lost Art... bible and , after getting delightfully lost in it for an hour or so, started adding up radiators and what not. I am pretty confident in the calculations of radiators. My hopes were to use a megasteam. My numbers put me just out of reach of the largest “629”. However, if it is true that uninsulated pipes lose 5X as much heat, then insulating the mains will put me right in my bracket. I feel lucky to get back into this house now for my own business. House is 1750’s. 2 pipe, lever (pack less?) valves on radiators and I spotted what appears to be a Richardson valve in the basement
N E 1 have any comments on this from the real world?
Ps. Please give me the answer I want to hear:)