Product Description
Water-King is an electronic water conditioner that inhibits limescale formation in hot and cold water services, and removes existing scale deposits.
It’s the only product of its kind proven by independent laboratory tests to soften hot water, and is independently performance verified using the IGC-335 test protocol making Water-King a marketing leading water conditioner.
What’s more, Water-King requires no plumbing so can be fitted yourself in as little as 15 minutes, and has a 25 year maintenance free design life. It really is a ‘fit and forget’ alternative to conventional salt softeners!

Water-King Softens Water

Unlike other types of water conditioner, independent tests have proven Water-King produces softer water with less dissolved calcium occurring in hot water. The table opposite shows how much Water-King can soften hard water.
After the first few weeks, during which the existing scale is removed, the hot water is half as hard as it was without the Water-King treatment.
Independent tests carried out by TFW Associates (Forensic Engineering Consultants to the Legal Profession) for the Advertising Standards Authority.
Where to install your Water-King

Unvented hot water systems
When a combi boiler is used, and there is no hot water cylinder, a single Water-King unit fitted on the rising main will provide the whole house with protection. If only the boiler needs protection from scale, locate the Water-King within 2 metres of it. This also applies to a hot water cylinder under mains pressure. Only the cold supply pipe should be treated.

Vented Hot Water Systems with Cold Water Storage Tank
Treated water delivered to a cold water storage tank will lose the effect of the treatment. Depending on water quality, this can happen very quickly. For this reason water is best treated after a storage tank. For best results we recommend two water-King units are fitted; one on the main inlet to the house (rising main) and one on the cold pipe that runs from the cold storage tank into the bottom of the hot cylinder (cold down service). If you decide to fit only a single unit, then you will get best value from it by fitting it on the cold down service. The signal is transmitted through the water and will treat all the water in the storage tank above it. If you have copper pipes that are cross bonded to the rising main, the taps fed from it should be adequately treated as well.
FAQ's
The Technology Explained How does Water-King work?
Water-King uses pre-programed micro-chips to transmit pulses of electrical charge into the water at varying frequencies and amplitudes. These “signals” cause some of the minerals in the water to form sub-microscopic clusters. When the water is then heated, the clusters act as nucleation seeds upon which the calcium carbonate (limescale) precipitates. Instead of the hard encrustation on pipes and heating elements that normally occurs when water is heated, the precipitation takes the form of tiny calcium carbonate crystals that float suspended in the water. These ultra-fine crystals are carried away with the flowing water.
How Is The Water Softened? What makes the water softer?
The nucleation seeds created by Water-King stimulate the conversion of more of the dissolved calcium bicarbonate in the water into crystals in suspension than would otherwise occur. The resulting hot water, with less calcium bicarbonate, is now chemically softer. Water-King is the only electronic device of its kind that has been proven by independent laboratory tests to produce softer hot water.
Drinking Water and Salinity Is Water-King treated water safe to drink?
Unlike ion exchange softened water, where minerals are removed and replaced by sodium, Water-King treated water is good for drinking. There is no need for a separate drinking water supply, no health risks and no chloride effluent. It can be used for reducing scale in irrigation systems and food preparation facilities.
Removal of Existing Scale Can it remove existing scale deposits?
Water-King is very effective at removing existing scale deposits from water heaters. Descaling occurs within a few weeks. The scale breaks away in flakes as it loses adhesion with the surface that it is encrusting. In existing systems that are already scaled up the use of strainers should be considered to reduce the problem that debris scale can cause. Mixing valves, aerators and shower heads can collect debris. Heat exchangers with restricted flow passages such as Geononi, Plate and Frame and MAXXflo are very vulnerable to debris and should be protected with strainers where possible.
Is Water King right for you? How does it compare to other solutions?
Field trials conducted over the past fifteen years around the world have demonstrated the effectiveness of Water-King in most applications where conventional water softeners would normally be used. Water-King is less expensive to install and maintain than ion exchange softeners. In larger applications it is also less expensive and simpler to install than inline magnetic and electro magnetic systems. Water-King requires very little space, no special plumbing, no waste water connection nor access for the supply of salt and its storage. There is no head loss nor any additional corrosion problems.
20+ Years of Water Treatment Excellence
Trusted by Industry Leaders
Water-King is widely specified and installed by the UK’s largest consultants and contractors on prestigious projects from world-famous stadia to London’s iconic ‘Gherkin’ Building.
Designed for Homeowners
You too can benefit from this unique technology with the easy-to-install Water-King WK1, a domestic version specifically designed for homeowners.
Testimonials


Literature & Brochures
- Download PDF
Water-King WK1 & WK1-E Installation Instructions
PDF • 741.3 KB - Download PDF
Water-King – How it Works
PDF • 173.6 KB - Download PDF
Water-King Brochure
PDF • 2.3 MB
Technical Specifications
|
Direct fired gas/oil boiler, maximum output |
Water-King WK1- 35 kW |
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Electrical boiler maximum output |
Water-King WK1 – 5kW |
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Maximum pipe diameter |
Water-King WK1 – 28mm |
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Frequency range |
1-10kHz |
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Peak output voltage |
82v |
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Power supply |
230v |
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Input current |
Water-King WK1 – 0.02A |
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Dimensions |
140 x 85 x 50mm |
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EMC Directive |
RTCG certify levels below CISPR / 14 & CISPR/22 |
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Radio Agency |
Approved Tariff No EN58505901009900-811 |
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Boxed Weight |
Water-King WK1 – 0.55kg |
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Humidity Non Condensing |
80% |
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Transformer |
Water-King WK1 – External |
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Power Requirements |
Each unit requires mains voltage supply within one metre of the unit. The unit should be located within 45 cm of the pipe being treated. |
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Plumbing Requirements and Pipe Composition |
Each Water-King aerial requires up to 6 cm of straight pipe. They can be fitted either side of bends on horizontal or vertical pipes. Water-King units can be fitted to pipes of any material except lead. The pipe does not need to be cut, there is no plumbing involved, nor is there any requirement for an isolating bypass with associated valves. Insulation may be fitted over the aerials after installation |
Delivery
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