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Internet # 205086908

Model # 35230

Store SKU # 1000832916

Haymaker Tankless Water Heater Descaler

  • Removes mineral deposits from expansion tank
  • Extends the life of the water heater when used regularly
  • Compatible with most metal, rubber, ABS, PVC and CPVC materials
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Product Details

About This Product

Hercules Haymaker Tankless Water Heater Descaler quickly and easily dissolves inorganic deposits that restrict flow to restore circulation and heat transfer efficiency. It's safe for potable water systems and is non corrosive. Behold the power of Hercules, products built to last and trusted by plumbers to withstand even the toughest conditions.


  • Citric acid-based, non-corrosive and VOC-free
  • Removes carbonates, sulfates, phosphates, rust, oxides and other mineral deposits
  • Dissolves inorganic deposits that restrict flow
  • Compatible with most commonly found plumbing-related materials including PVC, CPVC, ABS, rubber, steel and most metals
  • Other applications include descaling non-aluminum heat exchangers and water heaters
  • Extends the life of the appliance when used as part of a regularly scheduled preventative maintenance program
  • Easy to use for long-term boiler function
  • Safe for septic systems and sewers
  • Safe for potable water systems
  • Limited warranty
  • Return Policy

Product Information

Internet # 205086908

Model # 35230

Store SKU # 1000832916


Dimensions: H 7.5 in, W 2.25 in, D 5 in


Product Depth (in.)

5 in

Product Height (in.)

7.5 in

Product Width (in.)

2.25 in



Water Heater

Compatible Brand/Model


Finish Family


For Use With

Gas Tankless



Pack Size


Product Type


Product Weight (lb.)

3 lb



Warranty / Certifications

Manufacturer Warranty

1 Year Limited

Questions & Answers

Q:Used Haymaker Descaler to flush a Rheem Tankless W H. Followed directions on Haymaker container and flushed for 30 min. After putting hoses back on, I ran the hot faucet about 5 minutes and hot water never reached previous heat level. Why?
by|Jan 23, 2024
1 Answer
Answer This Question

A:  Rheem, Please email us at technical@oatey.com Please put attention Jim in the subject line.

by|Jan 30, 2024
    Q:Does this work for my aqua balance tankless heater? My furnace is heat up, but they don’t heat up hot enough to warm up the house. Please help!
    by|Jan 15, 2024
    1 Answer
    Answer This Question

    A:  RenatoDS, Yes, Haymaker could be used on your tankless heater, but if it is so scaled up that you have no heat, then you may have other issues and Haymaker may not solve your problem. We recomend having an HVAC company out to look at it.

    by|Jan 25, 2024
      Q:Is this an acid cleaner?? Need to clean up macerator deposits (saniflo) .
      by|Jan 7, 2024
      1 Answer
      Answer This Question

      A:  This is made solely for use with tankless hot water heaters.

      by|Jan 13, 2024
        Q:How are people disposing of this?
        by|Jan 5, 2024
        1 Answer
        Answer This Question

        A:  You would add baking soda to the liquid till it stops fizzing then it is neutralized and safe to pour down a drain.

        by|Jan 31, 2024
          1 found this answer helpful
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          Customer Reviews

          Customer Reviews

          • 4.6 out of 248 reviews