OATEY 35231 Hercules® 3.78 L H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$177.14
$127.14
OATEY 35231 Hercules® 3.78 L Haymaker™ Tankless Water Heater Descaler

OATEY 35231 Hercules® 3.78 L Haymaker™ Tankless Water Heater Descaler

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Model: 35231
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$177.14
$127.14
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Hercules® 3.78 L Haymaker™ Tankless Water Heater Descaler

  • Features

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

Manufacturer Resources

Product Specs

Volume:
0.06
Department:
Plumbing
Product Group:
Plumbing
Product Subgroup:
Fittings
Product Type:
General Fittings
Product Finish:
Clear
Product Material:
Liquid
Product Weight:
9

OATEY 35231 – Frequently Asked Questions

1) Can Hercules Haymaker descaler be used on a tankless water heater that feeds potable water?
Yes. The Haymaker descaler is safe for potable water systems, so it can be run through a tankless heater serving drinking water lines. It is citric acid based, non-corrosive and VOC free, which is why it can go where a stronger mineral acid cannot.
2) Will this descaler damage PVC, CPVC or rubber in my flush kit and pump lines?
No. Haymaker is compatible with most commonly found plumbing materials including PVC, CPVC, ABS, rubber, steel and most metals, so a standard circulation pump, hoses and service valves will handle it.
3) Is this descaler safe on an aluminum heat exchanger?
No. Oatey calls out non-aluminum heat exchangers and water heaters for the Haymaker descaler. If the unit has an aluminum exchanger, use a product rated for aluminum instead.
4) Can I flush Haymaker descaler down the drain on a property with a septic system?
Yes. Oatey lists the Hercules Haymaker as safe for septic systems and sewers, which matters on rural rental properties where a corrosive acid flush would be a problem for the tank.
5) What kind of scale does the Hercules Haymaker actually remove?
It pulls carbonates, sulfates, phosphates, rust, oxides and other mineral deposits off the exchanger surfaces. That covers typical hard water lime buildup plus iron staining, which is the usual combination in well water areas.
6) Can I use this on a standard tank water heater, not just a tankless?
Yes. Beyond tankless units, the Haymaker is listed for descaling non-aluminum heat exchangers and water heaters generally, so tank-type heaters and similar equipment are in scope.
7) How much liquid is in a jug of Oatey 35231 Haymaker?
Each jug holds 3.78 L (one US gallon) of clear liquid descaler, part number 35231. For a maintenance program across a building, plan one jug per heater flush unless the manufacturer's service procedure says otherwise.
How fast can I get the OATEY 35231 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the OATEY 35231 come with a warranty?
Absolutely. The OATEY 35231 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the OATEY 35231?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the OATEY 35231 from ZenSupply?
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