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High Duty baseboard

Can any tell me how many feet of high duty baseboard can be placed on a normal 3/4 loop. I know it's about 67 feet for standard output tube and fin


  • SWEISWEI Member Posts: 7,087
    High Duty Basebaord

    I'm not familiar with that brand, but several manufacturers offer heavy duty or high output variants.  The length limit for a 3/4" circuit would depend on the flow, which would in turn depend on the ∆T for the loop.
  • kcoppkcopp Member Posts: 2,270

    40,000 btu on 3/4" copper. So if normal baseboard is around 600 btu/ ft that is around 66/67Ft.

    You could go more but your output will not be 600/ foot after the 67'.

    Typically high output is 750/ ft. (ie.. Sterling Senior)

    That puts you in the 53' range on 3/4" copper
  • RichRich Member Posts: 2,107

    of the disclaimer that  "this includes a 15% heating effect factor " ,. this is a fictitious number that should be subtracted , making 600 per foot actually 510 per . 
    You didn't get what you didn't pay for and it will never be what you thought it would .
    Langans Plumbing & Heating LLC 732-751-1560
    Serving most of New Jersey , Eastern Pa .
    Consultation , Design & Installation
    Rich McGrath 732-581-3833
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