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.


We are in the process of installing a staple up radiant floor system. The load calls for a 60,000 BTU input boiler following heat loss calculations performed by manf. rep. We would like to install a Burnham indirect hot water heater which would require us to increase the input to 140,000 BTU'S . Is it worth it to increase the size of boiler just to satisfy hot water needs or should we just go with a standard storage type water heater and use the smaller in put boiler for heating only.


  • STEVEusaPA
    STEVEusaPA Member Posts: 6,505
    can I first ask.....

    why do you need 80000 btu's for domestic how water?  Seems like a whole lot.  If you need that much hot water production, I would go with something different.  Either a high-low-high fire, or split the load with 2 smaller boilers.  Is this going to run off of gas or oil?  Fill us in with more info, and we'll offer more suggestions.

    There was an error rendering this rich post.

This discussion has been closed.