Is your Boiler a Condencing Boiler

An essential question to ask when picking a boiler is my boiler is condensing Boiler , Condensing boilers are much more energy efficient than conventional boilers which means switching to a condensing boiler can significantly lower your fuel bills.

Today, using a condensing boiler in new buildings is almost the standard, because boiler and heating system can be perfectly matched right from the start. A condensing boiler brings the most benefit when it is installed in heating systems with low system temperatures. Condensing technology can save up to 30 percent of heating costs, even

Gas Condencing Boiler 

in modernisation projects.

The Vitocrossal 300 gas condensing Boiler from Viessmann is the right solution for any application – including providing heating in apartment blocks, as well as in public and

commercial buildings.

Condensing boilers recover waste heat that would normally be lost through the flue. Condensing boilers are able to do this because they have a much larger and more efficient heat exchanger than those found in traditional boilers; this maximises the amount of usable heat produced by the burner.

A heat exchanger enables the transfer of heat from one source to another over a solid surface, in a condensing boiler this includes heat from the flue gases which is used to heat water that is returning to the boiler from radiators.

Because the flue gases are not as hot as those in a non-condensing boiler, a condensing boiler needs a different type of flue. In a traditional boiler the high temperatures cause the flue gases to rise in the same way as smoke does through a chimney. A modern balanced flue has 2 pipes, one inside the other. One pipe draws in air from the outside to aid combustion, and the other dispels the gases.

A condensing boiler has a much shorter flue than a non-condensing model, which means that it is often best to site a condensing boiler against an outside wall. It is worth noting that because condensing boiler flue gases are not as hot, they do not rise as quickly which means that the plume from the flue can be a nuisance if it is expelled across a pathway or access point.

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