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Scalewatcher 3 star Hard Water Treatment System

Scalewatcher 3 star Hard Water Treatment System

Part Number AG3star
Retail Price: $549.00
Your Savings: $50.00
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Water Hardness
1 to 50+ gpg (grains per gallon)
Pipe Size
1/2" to 1 1/2" pipe
Unit Dimensions
6"H x 9"W x 1 1/2"D

Residential, indoor use
Cold water main up to 1 1/2"; homes with tankless water heaters or hot water tanks. Ten year extended warranty included.

Save energy, save water, save money, get the cleaning & beauty benefits of soft water and be eco-friendly !!!


  • Water feels softer, and kinder to skin and hair
  • Improves soap lathering, reduces soap scum
  • Improves water flow in severely scaled systems
  • Removes unsightly limescale from faucets, showerheads, toilets, etc.
  • Improves water heater efficiency, saves energy
  • Extends the life of water heaters
  • Extends the life of Reverse Osmosis membranes more benefits…


Scalewatcher is a "must have" to protect TANKLESS WATER HEATERS.

Scalewatcher effectiveness has been proven by independent research. read more…

Scalewatcher has been approved by the Los Angeles Sanitation Department to replace the now illegal salt based water softeners. read the approval letter…

Scalewatcher can save an average household $500 per year or over $10,000 in a twenty year period.


Installation Instructions for Scalewatcher (short version)

Do it yourself installation is quick and simple - and does not require a plumber or the cutting of pipes.

Installation Kit


  • Step 1: Locate the pipe where your water supply first enters your building.

  • Step 2: Secure the signal cable with a cable tie (provided), wrap the cable twenty times around the pipe, secure with another cable tie, wrap twenty times going back on top of the existing coil, secure with a cable tie. The finished coil should look as the last image below.

Locate the pipe Secure the signal cable
Connect the signal cable to the Small Wonder™ Connect the signal cable to the Small Wonder™
  • Step 3: Connect the signal cable to the Scalewatcher™ unit and plug into 110 Volt outlet.