Pros, Join Our TradeMaster Program!
Refill Cartridge for SS-HB-3

Noritz's ScaleShield Water Conditioning System is a unique product providing superior limescale prevention and corrosion control. The Scale Shield conditions water at a constant rate resulting in consistent scale prevention and corrosion control for predictable periods of time. ScaleShield works by:
  • Keeps scale-causing minerals in solution inhibiting limescale formation.
  • Changes the shape of precipitated limescale preventing accumulation.
  • Coats wetted surfaces with a micro-thin layer that acts a shield.
  • Helps soften and remove existing limescale over time.

In many cases, the ScaleShield Water Conditioning Systems offer many of the same advantages as conventional water softening systems, except at a lower cost with little professional maintenance. When it comes to protecting your Noritz tankless water heater, no other product offers the level of protection from limescale and corrosion than ScaleShield.
Hide Description
Manuals (1)
Product Type:

Replacement Cartridge




Scale Inhibitor

Max Pressure (PSI):


Used With:


Max Water Temp (°F):


Reduction Claim:





This item is compatible with the following Noritz model numbers.

Click on any model number to view complete parts list

warning icon  There are no compatible model numbers that match your entry.

Load More

Please note: Many replacement parts have subtle differences between them and can be easily confused. Attempting to install the incorrect part voids the return coverage. If you are not completely sure your order is correct please give us a call at 1-888-757-4774.

Need help finding a replacement part?

Fill out the part request form and someone will get back to you shortly.

Part request form

Product Review

Product Q&A

Add-on Item

This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

Why don't we show the price of this item?

We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

To see the price, simply add the item to your cart or sign in.