The Minus 7 hybrid energy harvesting system is classified as a solar-assisted heat pump technology, within the National Calculation Method (Standard Assessment Procedure). The identifier for this product is: Minus 7 SEP3G10 1/2/3.
It is a renewable energy system made up of an endothermic roofing system, a solar energy processor and a large thermal store. The system uses an endothermic tile plank to form a weather-tight interlocking roofing system, made from a uniform profile, aluminium extrusion, dressed in a powder-coated, hard-wearing finish. The endothermic tile planks are flooded with a heat transfer fluid which absorbs heat energy and solar thermal energy.
The system provides hot water and heating for buildings. It is suitable for new-build or deep refurbishments, where a new roof is required. It is designed to keep a five bed house at a comfortable temperature of at least 21°C even in the worst case scenario of mid-winter. However the system is capable of servicing up to three dwellings at once making it highly suitable for housing associations as well as commercial buildings.
Fully UK manufactured, the roofing component is expected to last for more than 50 years and the solar energy processor will last for more than 20 years. All components are fully recyclable at end-of-life.