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Bosch Greenstar ZBR28-3 or Navien NHB110H

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Chevy57
Chevy57 Member Posts: 8
Folks,
Which one do you choose? 4 zones controlled with pumps. First and second floor use cast iron radiators but 1 1/4 Pex aluminum Pex instead of 2" cast iron pipes to feed them. third zone is radian floor in the kitchen and the final zone is side arm water tank. Which one and why?

Comments

  • Ironman
    Ironman Member Posts: 7,376
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    Neither.
    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
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    Bosch between the two...

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  • Ironman
    Ironman Member Posts: 7,376
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    Here’s what I like and what I also put in my house:

    https://htproducts.com/literature/mktlit-96.pdf


    Bob Boan
    You can choose to do what you want, but you cannot choose the consequences.
    SuperTech
  • GW
    GW Member Posts: 4,693
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    which guy can best service the boiler down the road? That's the general answer.

    For a Cast iron rad job I'd be digging the Viessmann CU3A
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    gary@wilsonph.com
  • SuperTech
    SuperTech Member Posts: 2,165
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    Anything but Navien. 
    STEAM DOCTORkcopp
  • JMWHVAC
    JMWHVAC Member Posts: 32
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    Why not Navien? We have installed dozens of various Navien models over the last 6 or so years and they work. Basically problem free. I hear that they have good tech support but I hardly know because I don't have need to call them. Sure that may change some as the units age.
  • Big Ed_4
    Big Ed_4 Member Posts: 2,785
    edited February 29
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    Navien , suck if you need to replace parts .... That's their problem in engineering ..

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