achieved by inverting the system before installation removing the immersion heater and then filling the manifold with water to the required level before refitting the immersion heater an anti corrosion agent may be added to the water used to fill the heater once filled the manifold is mechanically mounted to a wall by suitable clamps and the cable 19 is connected to an electrical supply with an isolator switch possibly also provided with a time switch when energised the immersion heater will raise the temperature of the water in the manifold so promoting a convection flow through the formed tube 12 a towel may be temporarily stored in the holder 11 merely by being tossed into the basket like shape defined by the formed tube 12 so long as sufficient of the towel is within the shape it will remain there and will be heated by the water passing through the tube 12 referring now to fig2 to 5 there is shown a manifold which though generally similar to that described above does not employ an immersion heater rather this manifold is intended for connection to a domestic hot water space heating system whereby the towel holder 11 connected to the manifold may be heated by water drawn from that space heating system in fig2 to 5 like or generally similar parts to those of fig1 are given the same reference numbers and will not be described again here the manifold has a tubular outer body 17 provided at its lower end with an internally threaded.