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Replace church 60's steam system with hot water?
I don't know why the engineer in 1964 selected steam for a church system that has fintube and reheat coils - but they did. (vacuum system)
The question is - Is it worth it to replace with hot water at this point.
There are 7 reheat coils all in the boiler room.
The piping is all steel but is easily accessed in a tunnel around the perimeter of the church.
I think they had water treatment at one time but there is none now. They do have a make-up water meter (so perhaps we can determine how much they are makeing up if they kept decent record).
My feeling is - if it ain't broke, don't fix it.
Any ideas? Things to look for?
The air handling units will likely have new cooling coils installed. So perhaps replace the re-heat coils with hot water but leave the fintube steam. (thinking out loud)