scale inhibitor with t-fitting | complete system | protects against hard water damage


25-Year Warranty
$40.99

Protect your water heater, pipes, and appliances from hard water scale buildup. Complete inline system with T-fitting for easy installation.

what’s the right heater for me?

Overview

Hard water causes calcium and lime scale to build up on your water heater's heating elements, inside pipes, and throughout your appliances. Over time, this scale reduces efficiency, causes premature failure, and leads to expensive repairs.

This scale inhibitor system prevents that damage before it starts.

How it works: The polyphosphate cartridge releases a controlled treatment that binds to calcium and magnesium minerals in your water, preventing them from solidifying and building up on surfaces. It also forms a protective coating inside pipes to reduce corrosion.

What it protects: Water heaters (tankless and tank), dishwashers, washing machines, pipes, faucets, and shower heads. Anywhere hot water flows.

Easy installation: The T-fitting design installs inline on your cold water line without cutting pipes. Connect the T-fitting, thread in the cartridge, turn on the water. Works with any water heater brand.

Maintenance: Replace the cartridge every 6-12 months depending on your water hardness. Replacement takes 5 minutes.

Especially important for: Well water systems, areas with hard water, tankless water heaters (more susceptible to scale damage), and anyone who wants to extend appliance lifespan.

Product Details

WHAT'S INCLUDED:

  • Stainless steel T-fitting with ¾" NPT connections
  • One AP341 polyphosphate scale inhibitor cartridge
  • Installation hardware

SPECIFICATIONS:

Connection size: ¾" NPT
Installation location: Cold water line, minimum 3ft before water heater
Cartridge lifespan: 6-12 months (depends on water hardness)
Flow rate: Up to 10 GPM
Compatibility: All water heater brands and types
Materials: 304 stainless steel housing, food-grade polyphosphate, BPA-free cartridge
Standards: Meets NSF/ANSI standards for material safety and structural integrity

REPLACEMENT CARTRIDGES: Need a refill? See our AP341 Replacement Cartridge

Install + Care + Warranty

Delivery Info