Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Need Heat Loss Calculator

Tony Massi
Tony Massi Member Posts: 86
I am looking for a heat loss calculator to find out how much baseboard I need for a house we are renovating


  • SWEI
    SWEI Member Posts: 7,356
  • Ironman
    Ironman Member Posts: 7,379
    SlantFIn has a free one that you can download from their site.

    One thing that's often misunderstood in sizing baseboard: with 180* supply and 160* return, you have an AVERAGE water temp of 170* in the BBs, not 180*. You should not use the 560-580 per lineal foot btu output rating. That's for 180* water temp. Use 500 btu per foot for 170* average water temp.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • Hilly
    Hilly Member Posts: 427
    edited February 2015
    Does anyone offer straight up heat loss service for a cost? I feel for the amount of people that seem to require it (professional and non-professional) that somebody hasn't decided to make it a source of income for themselves.
    Especially via a planned based submitting via the digital world, then eliminating any requirement for site visit.
  • Snowmelt
    Snowmelt Member Posts: 1,416
    Yea I do it I use taco fo pro
  • Paul48
    Paul48 Member Posts: 4,469
    To elaborate on Ironman's thought ...........Also consider, if it's a series loop, each successive set of baseboards sees a low average water temperature, and has a lower output.