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            | Domestic hot water |  
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            | The domestic hot water system is also  provided in conjunction with the central heating system. Heat is supplied from  the gas boiler and there are two main ways in which this can be achieved. 
 
                By using a combination boiler  or
The more common way by providing an indirect hot water heating  cylinder. Majority of systems use this method and it may prove more reliable  and flexible it also has the added advantage that the cylinder can be  positioned in the linen cupboard and the heat emitted by the cylinder help air  the clothes. |  |  |