Buying this "service deal" can be expensive but if you feel happier knowing that you are protected from breakdown for a few years, shop around insurance brokers to see how prices compare.

The three-way tap delivers hot and cold water independently or mixed just like a normal kitchen mixer. For purified water in some cases, the centre lever or handle on the tap body is selected, and cold water is diverted to the purification unit which is fitted neatly away under the sink. After purification, the water is channelled through its own waterway inside the tap to deliver purified water at the point-of-use. Alternatives to this delivery system are also available.