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    Difference in gas bills between Band A and Band D boiler

    I am considering installing a non condensing gas combi in my home. The rating is band d and having spoken to the manufacturer it is 79% efficient. The Band A Condenser in their range is 89%. I was wondering what the financial difference in terms of gas bills would be say over a year? I have been...
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    Problem with Independant water filled radiators

    I've come accross a number of radiators in a property all of which are water filled but are not connected to any water supply. The rads are trendy designer style panel ones and have electrical elements in vary in voltage and wattage as do the size of the rads. Some of the rads can be bled as...
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    DHW problem on Pumped CH Gravity DHW system

    Hello All would anyone be able to help me with a problem I am having on a system I've been working on. The System comprises of a Glow worm BBU with pumped CH and Gravity DHW with a cylinder and two F and E tanks in the attic. All is well on the CH side pump is starting and boiler firing on...
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