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hydronic system cleaner, any choices?

Chuckles_3 Member Posts: 110
I called Rhomar, and their product (Hydro-Solv) is, um, not cheap (I have a converted gravity system and will need a lot of it)...I was wondering if there are any alternatives, maybe not as good as Rhomar but acceptable.

Many thanks,


  • Big Ed
    Big Ed Member Posts: 1,117
    hydronic water

    Aged ,dirty water is like aged wine in a hydronic system. It has good heat transfer properties . Takes years & years to get it that way. Leave it be and use the savings for tonights diner...
  • .
    . Member Posts: 80

    I don't know the answer to your question, but I wanted to apologize for the flippant response from Big Ed.
  • tls_9
    tls_9 Member Posts: 89
    I dont know...

    How it compares price wise but I've always been happy with Hercules Boiler Cleaner for residential size systems.


  • Big Ed
    Big Ed Member Posts: 1,117

    Don't apologize for me.......

    Do you have something to add to the subject of hydronic water ??
  • hr
    hr Member Posts: 6,106
    The cleaner the better

    any sludge, rust, dirt, etc in the system lowers the efficiency of the hx surfaces, and can cause overheating of the HX surfaces.

    Less expensive hydronic chemicals have mainly chelates that try to keep all the gunk in suspension and from settling out in the boiler, pumps, exp tanks etc. These products are usually added and left in, no flushing.

    A better way is to dissolve and flush the bad guys out, I think. Then add a conditioner that provides a thin film layer, ph balance, O2 scavanger, etc.

    Same reason you change oil and filters in your truck :)

    hot rod

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