This project is presented by Eddy
Summary: Dealing with Hard Water.
Familiar with these problems? Furred-up kettle? Clogged shower head? Hot taps running slowly due to clogged pipes? Stubborn tidemarks around baths and sinks? White stains on taps, even though you've just cleaned them? If you suffer these, then join 60% of the British population. You've got a hard water problem.
There are three possible solutions:
1:Chemical limescale cleaners and lots of hard scrubbing to remove baked on limescale, added to which you've got to keep on top of the problem week after week. You'd be surprised how the cost mounts up too! Also the cleaners pollute the waste water, causing yet more problems to the environment.
2: Conventional (ion exchange) water softener. The most expensive option, costing up to £1100, plus installation charges! These devices must be plumbed into your mains water supply, and consume a large quantity of salt in order to make them function, about £8 per month for a family of four people! The water generated by these systems is truly softened, but sodium from the salt replaces the calcium in your water. This means that treated water has substantially raised sodium levels. Experts advise that this water is not suitable for drinking, so an alternative source of drinking water should ideally be arranged (separate tap in kitchen). This is particularly important if you have children in the house, as they should consume even less sodium than an adult, and on no account should a baby's formula milk be made with water treated by an ion exchange water softener.
3. Electronic or magnetic water descalers. Some devices are simply powerful magnets placed around the incoming mains water pipe. A much more effective device is the electronic water descaler, an example of which is the Eddy water descaler developed by the Surrey company BHT. They have recently introduced their updated model, the ED5002P which more than doubles the output level of the previous model to combat even the most severe limescale problems. This device operates by wrapping coils of wire around the incoming water main to pass a magnetic field through the water. The effect of this is to cause the calcium in the water to stay in solution and so inhibit it from adhering to taps, baths and kettles. When developing this device, BHT sought to better the output level of all rival devices by a significant factor whilst also managing to produce a unit that is economic to buy and run. During the testing phase they found some competing devices to have output signals so low as to render them almost completely ineffective. Also unlike some inferior devices which operate with only one coil, Eddy has two, so increasing the time for which the water is exposed to the magnetic waveform. This has been a crucial factor in its success. It's made in Britain too, and comes with a 12 month money back guarantee if not completely satisfied!

Fig.1 The Eddy Electronic Descaling Device
Eddy represents an economical and environmentally friendly way of combating the nuisance of limescale. The treated water has an unaltered chemical composition, so is as safe to drink as normal tap water. No dangerous chemicals or cleaners are washed into your waste water. The build up of limescale is radically reduced, not only on visible surfaces like taps and kettles, but also in places where limescale damage cannot be seen, such as heating elements in washing machines, and hot water tanks. In these places, excess limescale results in increased water heating costs and premature heating element failure. After fitting Eddy any small deposits of limescale that are still present, in kettles for example, should be powdery and easily cleaned away with a quick rinse or a gentle wipe. Furthermore, of great interest to readers of DIY Doctor, the device is easily installed as a DIY operation, taking the average person no more than 30 minutes to fit. Overall, electronic water descalers such as Eddy present a neat solution to a major problem for those of us in Britain (most of us) afflicted by hard water.
Quick overview of Installation
1: Locate the incoming cold water main, usually under the sink, or in the understairs cupboard. This will usually be a 15mm copper pipe with a stopcock nearby. See an example in Fig.2 below.

Fig.2 Typical location of incoming water main
2: Choose a convenient part of the pipe which is long enough to wind the two coils of wire around it (see Fig.1, illustration of typical installed device). Ideally this will be not less than 23 cms (9 inches) long. There should a space on the wall nearby (within about 8 inches) to attach the main Eddy device, within reach of the coils wound on the pipe.
3. Wind 2 coils of wire around pipe as described in Eddy installation manual (Fig.3).

Fig.3 Coils wound onto mains water pipe
4. Attach Eddy main unit to wall within reach of coils using the supplied heavy duty self-adhesive velcro and plug in the coils (Fig4)>. Locate a mains socket within reasonable distance of the Eddy unit to enable connection of power cable via supplied mains adapter. (Use an extension lead if necessary, keeping mains socket/power adapter away from damp).

Fig.4 Fixing Eddy to wall and plugging in
5. Switch on and say goodbye to limescale at a cost of less than 4p per week!
Current price of the Eddy electronic descaler is £129.99 available direct from manufacturer
For further information on electronic limescale prevention go to www.eddy.uk.com
email admin@eddy.uk.com or telephone BHT on 020 8287 6668
Much more construction information is available in our bookstore. All the tools and fittings you need in the toolstore.