What is key feature of a condensing boiler?

A key feature of a condensing boiler is that it recovers heat from combustion gases. This type of boiler is designed to maximize energy efficiency by extracting additional heat from the flue gases that would otherwise be lost to the environment. By condensing these gases, the boiler not only increases its efficiency but also reduces energy consumption and emissions.

In condensing boilers, the heat exchangers are specifically designed to allow the water vapor in the exhaust gases to condense back into a liquid, thereby releasing latent heat. This process can significantly enhance the overall efficiency of the heating system, often exceeding 90%.

This feature sets condensing boilers apart from traditional boilers, which do not utilize this heat recovery mechanism, leading to lower operational efficiencies.