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