11 THE CLIMATE CHALLENGE A holistic approach to heating efficiency


EVERY NEWLY BUILT HOME IS NOW REQUIRED TO PROVE A 31% REDUCTION IN CO2 COMPARED TO PREVIOUS STANDARDS AND DEMONSTRATE A MAXIMUM FLOW


TEMPERATURE OF 55°C


Ashley Cooper of WMS explains why underfloor heating is in the spotlight following new requirements in the Building Regulations, and how the housebuilders can benefit from taking a holistic approach to system design.


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compared to previous standards and demonstrate a maximum flow temperature of 55°C. Alongside this,


ollowing enforcement of the low water temperature update to the Building Regulations and Part L from June this year, the industry is now collectively adjusting to the single biggest change the housebuilding market has ever seen. Every newly built home is now required to prove a 31% reduction in CO2


to further increase efficiency, new properties must also now incorporate a self-regulating control device which allows for zoning within the property. While there is flexibility on how to meet the new targets and there are a variety of renewable energy sources available, the Government expects heat pumps will be the primary heating technology for new homes. However, in order for heat pumps to work at their most efficient (COP) level they need to run between 35-45°C. By design, hydronic (water based) underfloor heating can easily achieve this, whereas at flow temps as low at 35°C, it’s very unlikely that radiators would even work! Larger radiators would not only increase build costs, but they also create an eyesore and interior layout headache for housebuilders and homeowners alike – as such, they will quickly become a thing of the past for new builds.


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