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How much extra BTU do I need to add because of these custom covers?

Joseph_4 Member Posts: 230
I did a heat loss calculation and my room requires an 18 section Sunrad. The home owner wants to put custom wood covers in front of the Sunrad (see pics). How many BTU would you add because of these custom covers?


  • STEVEusaPA
    STEVEusaPA Member Posts: 5,437
    Your really killing convection with that design.
    Maybe you get lucky and the system is oversized.
  • hot_rod
    hot_rod Member Posts: 15,364
    looks like a pretty restrictive grill? Sometimes the manufacturers of screen give you the "open area" % on various screen material.

    I get special metals from this Chicago area company from time to time, they give you the open area number.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream