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Sizing replacement boiler

According to the Maharishi Master Yoda Dan, "the desire to oversize a boiler is stronger than the desire for sex."  I'm looking at a replacement project where the last installer really got his rocks off.

18 apts. 9 @ 1 bedroom  9 @ 2 bedroom      Nothing special about building

Existing boiler size:   28-5       3646 sq ft steam

Twin building next door    19-7        2888 sq ft steam

Actual measured radiation of building       1250 sq ft steam

I know what I'm going to do.  What would you size?


  • icesailor
    icesailor Member Posts: 7,265
    Boiler Size:

    Where does the potable domestic hot water come from?
  • HeatJockey
    HeatJockey Member Posts: 37
    domestic hot water

    currently 1 tankless coil.    Installing stand alone heaters
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