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BTU's from PEX with extruded aluminium plates

Brad White_9
Brad White_9 Member Posts: 2,440
And at what water temperature? Are the plates extruded or sheets? Output can be anything between 1 and 30 unless you nail down some other variables.


  • Joe_20
    Joe_20 Member Posts: 25
    BTU's from PEX with extruded aluminium plates

    How many BTU's can one expect out of 3/8 pex snapped into aluminium plates...plates are on 8" centers....
  • hr
    hr Member Posts: 6,106
    room temperature also

    as the delta t between the floor surface and the space temperature drives the output.

    Radiant Engineering has some excellent tables and graphs to show outputs a temperatures and with various floor coverings. www.radiantengineering.com

    hot rod

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  • ALH_4
    ALH_4 Member Posts: 1,790
    Thermofin Output

    Output based on the R-Value of the finished floor and fluid temperature with a 65°F MRT. The gray horizontal line is generally the maximum comfortable output for these conditions.

    Hope this helps.
  • chris_86
    chris_86 Member Posts: 53
    That is a very nice webb site,...

    But get the latest design guide from Wirsbro / Uphonor or whatever their name is...it's a simple question with a complicated answer. Some jobs we just kept adding tubing untill the customer was happy and why does each joist bay only have one run of tubing in it? That may be a problem!
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