What Is A Sealed System Boiler?
A system boiler (also known as a closed or sealed system boiler) is installed with a hot water cylinder. The main benefit is that you can deliver more hot water to a greater number of devices at the same time. For this reason it is usually installed in a larger property, perhaps with several bathrooms where the demand for water is greater than normal. However, it still needs less space than a traditional open vent or heating only boiler, which requires a second tank in the loft. A major benefit is that they system can cope with multiple draw offs, and water can also be pumped around the primary hot water circuit and the central heating circuit at higher flow rates which is more economical and less wasteful of CO2 emissions than a traditional open-vented system.
