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.

gravity HW boiler

good suggetstions on a system uprade job I am bidding on.
Gravity HW old Weil-MCl oil boiler converted to gas. They want something new and they are doing an addition with slab radiant....I realize that they could go wild here with an Ultra or a Munchkin...but they don't want to break the bank... Suggestions desired...TIA, kpc

<A HREF="http://www.heatinghelp.com/getListed.cfm?id=323&Step=30">To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"</A>


  • Mike T., Swampeast MO
    Mike T., Swampeast MO Member Posts: 6,928

    A converted gravity system and tube-in-slab radiant addition nearly scream "condensing/modulating"!
  • Constantin
    Constantin Member Posts: 3,796
    I agree...

    ...unless the owners plan to move soon and hence do not expect to see any of the benefit that a condensing boiler brings to the home. According to Gordon's personal experience, super-efficient homes do not sell at a premium. Maybe todays energy prices will shift that thinking...

    So, if these owners want to stay there for a while, I'd look into how to make the whole thing possible for them, perhaps going as far as a construction loan or whatnot. The payments ought to be less than the savings, so the client has a net gain.

    At the end of the day, it's their decision. If they want to stick with a cheap boiler, there is no point in banging your head on the wall too hard about it. All you can do is lay out the options, give them the choice, and then do the best you can with what's been given to you.
  • don_52
    don_52 Member Posts: 199
    Hitting the price point...


    Some folks have suggested (and used) the newer Crown
    "Cabo" and the Slant Fin "VSPH", with good results.

    Regards, db
  • Ron Schroeder_3
    Ron Schroeder_3 Member Posts: 254
    If the fuel were to remain oil

    Vitola 200 boiler, Vitotronic 200/300 control, 3 or 4 way mixing for the radiant slab, boiler water to the cast iron, indirect DHW.

    As the fuel is NG, same configuration.

    No need for me to apologize here for waving the flag. I just installed this in my own.
  • kevin coppinger_4
    kevin coppinger_4 Member Posts: 2,124
    i know, i know....

    I want to give them choices...good, better, best. Outdoor reset is a must. But can they afford the Ford Taurus or the Lexus?

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • Wayco Wayne_2
    Wayco Wayne_2 Member Posts: 2,479
    Condensing a must

    Depending on the heat load you might look at the Prestige, by Triangle Tube. Munchkin is also very reasonably priced. You talk like it's a high dollar item. You should price them some German condensing boilers first and they would be relieved at the Munchkin-Prestige price. WW

    To Learn More About This Professional, Click Here to Visit Their Ad in "Find A Professional"
  • You could save them even more money

    with a Polaris fully condensing stainless steel DHW heater.
This discussion has been closed.