Scalewatcher Nano Original Electronic Descaler Reviews

The Scalewatcher Nano water descaler first patent was granted in 1991 making it the first water descaler of its kind. Being the 12th version of its original design, this unit is now more effective than ever, and impressively long-lasting too.

Softening Capability

The Scalewatcher water descaler is specifically designed to generate an electric field using its two cables wrapped together around the inlet of the main pipeline system. It descales water by inducing strong electric and magnetic fields with an endless changing frequency.

The system forces the naturally dissolved minerals in water such as magnesium and calcium ions to break down from large clusters (that form hard scale) to tiny crystals that cannot stick on the surface of piping, heating devices, and other fixtures.

The now unsaturated water causes the mineral ions to flow freely along with the water throughout the home plumbing system without any formation of limescale.

Additionally, the proficiency of the water to continually dissolve minerals is increased as a result of this process. Therefore, the existing hard scale is gradually dissolved and eliminated from the water system and other appliances like the showerheads and faucets.

The system doesn’t compromise the mineral composition of water with harsh chemicals or salt. It leaves the treated water unchanged and retains the essential minerals inside it making it healthy to drink.

Scalewatcher works effectively with water hardness levels lower than 20 GPG. Usually, it performs best on municipal water supply since their water is always softened to an extent. However, if your water source is a private well, you may have to consider a stronger unit for best results.

Power Consumption

This system includes an adapter that’s compatible with a 110v power supply outlet. However, it will consume up to 13 watts of power which means it will cost you less than $14 a year to operate.

When you put it side to side with the other models on this list, it’s certainly not the most energy-efficient system. Nonetheless, at $14 a year, it’s safe to say that you will not have to dig deep into your pocket to run it. 

Installation and Maintenance.

This compact system offers hassle-free installation with no plumbing or electrician required and takes very little space. You can use it with various types of piping including copper, steel, and pex or PVC pipes.

It requires a maximum of 1.5 inches pipe diameter and you need 6 to 7 inches of pipe space to wrap the coils. It works smoothly on a 16 to 22 meter-long water pipeline system.

The entire system descales your water and improves the efficiency of your heating appliances with no maintenance required. It includes two red and green LED indicator lights that notify you if the system works fine.

On the negative side, it is notably designed for indoor use only and it may not work effectively if your source of water has a high level of hardness beyond 20 GPG. Other than that, the Scalewatcher Nano descaler is a functional and durable unit that can efficiently help keep your water, plumbing system and appliances free from limescale.


  • Prevents scale build-up and eliminates existing deposits
  • Can handle water hardness levels of up to 20 GPG
  • Retains healthy minerals deposit in the water
  • Compatible with various types of pipe
  • Quick installation and no maintenance required
  • Comes with a 2-year warranty for repair and replacement


  • It’s not waterproof
  • Not suitable for well water
  • Not the most energy-efficient system

Product Overview

ProductScalewatcher Nano Original Electronic Descaler Reviews
Rating3.6 out of 5 stars (3.6 / 5) (More than 27 reviews)
Recommended price221.98 USD (Check the latest price at

Product Specification

Part Number Nano
Included Components1 Electronic Descaler Water Conditioner
Product Dimensions4.9 x 1.5 x 2.8 inches
Weight 3.84 ounces
CompatibilityAny pipe

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