Code for Sustainable Homes (CSH)

The Code is the national standard for the sustainable design and construction of new homes. The Code aims to reduce our carbon emissions and create homes that are more sustainable.

How it works

The Code measures the sustainability of a new home against nine categories of sustainable design, rating the 'whole home' as a complete package.

The Code is broken down into target levels based on the predicted carbon emissions of the building, with the highest level, six, being the target for a zero carbon property. Each level has it's own target emissions rate (TER), requiring stricter standards in each area of construction in order to achieve. Achieving levels 3-6 of the code typically requires some form of renewable heating to be incorporated into the building.

Good news for heating efficiency

The drive for increased energy efficiency in buildings in both recent editions of the building regulations and the Code for Sustainable Homes has resulted in buildings that need less energy to heat. This allows low-temperature heating systems such as heat pumps and underfloor heating to operate at their optimum efficiency, which further reduces the baseline energy use of the building.

How we can help

Chelmer have been producing integrated heating and systems involving underfloor heating and renewable heat sources such as heat pumps, solar thermal and wood burning stoves for over a decade. Our expert knowledge of integrated system design allows us to offer our clients objective advice on the best heat source selection based on your projects' individual requirements and target emission level.