HydroFLOW HS38 Electronic Water Descaler Reviews

If you have a small apartment, home or an RV, the HydroFLOW HS38 might just be the right unit for you. It’s the most compact and convenient electric water descaler on our list with a unique design and softening technology that not only makes it stand out but also very effective.

Softening Capability

The HS38 features a rather different technology and design from that of other electronic water descalers on the market. It has no copper bands or signal cables that require wrapping around the main water supply pipe.

It’s a single compact unit with two sections which are secured to the pipe using a clip. The system works by inducing robust but harmless signals of around 150 kHz into the water as it flows through the pipes.

Due to the conductivity of water, the electric field is transmitted throughout the plumbing system. These electric waves work within the water agitate the scale-forming mineral ions causing them to break down to fine, stable crystals in suspension rather than turning into the problematic scale.

The induction of the signals totally stops scale from accumulating inside the plumbing system and as well gradually removes the existing deposits already in the system.

It’s an innovative and super-effective technology, and the main secret behind this is the fact that it uses water a conduit which enables the signal to propagate throughout the whole system.

Therefore, all the places that the water passes through get to be effectively protected and treated which is a big plus considering that other models that rely on the pipe or wire wrap to transmit the signal only treat the water passing under the wrapped area. 

Another amazing thing about this unit is that the signals induced into the water are capable of agitating and removing biofilm layers formed as a result of bacteria and algae attaching to the piping. Over time, the signals will release any traces of biofilm in your pipes which will then be flushed out of the system alongside any existing scale.

Moreover, this HS38 descaling process is capable of inhibiting up to 65% of internal pipe corrosion. When installed on metal pipework, the current passing along it will create a coaxial magnetic field which interferes with the electrochemical reaction required for corrosion to take place.

The unit can remove hardness levels of up to 70 GPG which is pretty high since anything over 20 GPG is considered extremely hard. It does soften the water without changing its physical makeup, thereby you will also have the healthy minerals present in your water.

Power Consumption

With regards to power consumption, the HydroFLOW HS38 takes the upper hand compared to the other models herein. It uses not more than 1.2 watts which is the lowest power consumption.

This means you will get to save a lot of money because it will cost you approximately $3 to run it for a whole year and it connects to a standard 110 volts power supply.

Installation and Maintenance

With only a single unit with no cables to wrap around pipes, the HS38 is designed for nothing but convenience and ease of installation. It simply clips around your existing pipe, and you just need a screwdriver and outlet to install it within a few minutes.

It fits up to 1-inch pipe diameter and requires around 2 to 3-inches of clearance. You can also connect it to different types of pipes including copper, PVC, PEX and galvanized pipes.

According to HydroFLOW, it’s recommended to install this unit indoors, but it can also be installed outdoors provided it’s properly protected for the elements. You will have to ensure the entire unit plus the power supply, is well covered.

The system doesn’t require maintenance at all and it comes with a red LED light indicator which glows brightly to let you know the signal is propagating through the plumbing system. Therefore, you can easily tell when it’s working or not working.

Generally, the HydroFLOW HS38 is an electrical water descaler built to suit those looking for a tiny system that’s more than capable of dealing with extreme water hardness. It’s a convenient option especially for RVs, small homes and apartments measuring up to 1200 sq ft.


  • Very effective descaling process removes hardness of up to 70 GPG
  • Eliminates existing scale and biofilm throughout the water supply system
  • Keeps the healthy minerals in the water
  • Highly energy-efficient consuming only a maximum of 1.2 watts
  • Installation is straightforward and requires zero maintenance
  • Comes with a 3-year warranty against defects or failure


  • Not suitable for larger homes

Product Overview

ProductHydroFLOW HS38 Electronic Water Descaler Reviews
Rating4.2 out of 5 stars (4.2 / 5) (More than 18 reviews)
Recommended price314.95 USD (Check the latest price at Amazon.com)

Product Specification

Impulses cableNo cable
Flow RateN/A
Power24V DC / 120V AC
Voltage230 volts
Wattage4 W
Dimensions2.7 x 1.2 x 4.5 inches
Weight1 pounds

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HydroFLOW HS38 Electronic Water Descaler Reviews
HydroFLOW HS38 Electronic Water Descaler
HydroFLOW HS38 Electronic Water Descaler - Components
HydroFLOW HS38 Electronic Water Descaler - In box
HydroFLOW HS38 Electronic Water Descaler - In real life

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