Problems with condensing boilers

The recent spell of cold weather in the United Kingdom now seems to be ending, just in time for Christmas. The cold north wind has blown away and there is no more snow in London, although many parts of the country will see a slow thaw. In this cold weather I get thousands of people reading because their new fangled condensing boilers fail and they are seeking for a solution which enables them to get warm again.

There is clearly a widespread problem of condensing boilers failing to provide heat in very cold weather. The detailed reasons why they fail are set out in the above link, as are many people’s experiences in getting them working again.

If I step back and look at the reasons then I think there are three reasons:- Continue reading