Fixtures and appliances are usually under manufacturer warranty for a period, so it is worth checking warranty terms before arranging a repair, because some warranties require the work to be done in a particular way to remain valid.
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For a burst pipe or a serious leak, turn the water off at the mains tap before you call. If water is anywhere near power points, the switchboard or light fittings, stay clear and treat it as an electrical hazard. Do not enter standing water in a room with live power.
