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Boiler chemicals

RomanPRomanP Posts: 102Member
Hey there, gents

I'd like to pick your brains on subject of boiler water treatment chemicals. When performing a annual maintenance, which are the good chemicals to use? Steam and hot water boilers.

Thanks so much!


  • hot_rodhot_rod Posts: 11,252Member
    Best to test the fluid to see if any treatment is required. The boiler manufacturers are getting pretty adamant about fluid quality. I think you will see more and more warranty refusals when water quality does not meet their requirements

    Ph and TDS are good numbers to know. Either treat the water, or fill the systems with DI water

    It's a three step process, clean the system with a hydronic "detergent". Fill with DI water, Add inhibitors for best protection

    Test the fluid every few years. If you have non barrier radiant tube for example, you may need an ongoing chemical regiment
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    The magic is in hydronics, and hydronics is in me
  • My plumber did not put any treatment. He said my water PH was fine.
  • kcoppkcopp Posts: 3,324Member
    Tell us more about your boiler, system and what the history is....
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