Datum Phase Change Limited is a leading producer specialising in incorporating phase change materials into practical applications under the brand names RACUS® and F.E.S-Board®, for use in both new build construction and retrofit of commercial and residential buildings.

RACUS®, which stands for Reducing Air Conditioning Units & Systems, and F.E.S-Board® which stands for Fabric Energy Storage Board, are passive systems incorporating bio-based phase change materials that reduces the energy use and carbon footprint of a building by decreasing the heating and cooling demand of Heating, Ventilation and Air Conditioning (HVAC) systems and giving lightweight structures thermal mass

RACUS® and F.E.S-Board® innovative solutions use the latest generation of microencapsulated vegetable based phase change material to provide comfort cooling without the use of high energy consuming air conditioning.

Unlike alternative petroleum / paraffin wax based PCMs, vegetable based phase change materials provide a greater latent heat storage performance and greater environmental benefits. By completing a phase transition between solid and liquid they can absorb large quantities of latent heat to help maintain a comfortable occupied environment.

The demand for air conditioning in buildings worldwide is growing rapidly in response to increased building use and demands for comfort cooling by occupants. Consequently the energy consumed by air conditioning systems is expected to double from current levels by 2020 which already accounts for over 30% of a buildings total energy use.

With the implementation of the Carbon Reduction Commitment (CRC) Part L Building Regulation revisions, organisations are having to address the energy and carbon efficiency of their buildings. 

Through thermal chamber testing and installation into live projects such as the Ofcom Head Office, London and Department of Energy & Climate Change building, our products have proven energy savings of up to 97% over existing HVAC systems.

Our products offer competitively priced, easy to install solutions that yield significant energy and carbon savings for your building.