Design Buy Build Issue 43 2020 | Page 40

Heating, Ventilation & Insulation The benefits of High Heat Retention Storage Heating High Heat Retention Storage Heating (HHRSH) is an efficient way of storing heat from cheap off-peak electricity tariffs. Originally developed to make use of the excess night-time energy generated by nuclear power stations, storage heaters use cheaper off-peak energy to heat elements within the unit, which gradually transfer heat to a high- density core to be stored for future use. Insulation material retains this heat within the core, and when the off-peak period finishes it is gradually released throughout the following days. With no pipes, boilers, flues, fluid or gas safety requirements, HHRSHs are quick and easy to install. They generate significantly less carbon than gas central heating since the electrical grid has transferred to renewable production methods. Advances in controls and insulation mean HHRSH now retain heat for significantly longer than traditional storage heaters. These systems are up to 27% cheaper to run than a standard storage heater system, and up to 47% cheaper to run than any direct- acting electric convector, aluminium radiator or panel heating system. of energy to be stored overnight. Replacing these with HHRSHs can reduce the annual running cost by £418 over the typical lifespan of the heater, and £975 when replacing direct acting electric heaters, creating savings of up to £19,500 over 20 years. This is calculated using SAP software, the Government-recognised tool for modelling building energy requirements and running costs. Automated controls with user apps and IoT technology can now accurately track the required heating profile of the user, calculating exactly how much energy is needed without user- intervention. This maximises comfort and prevents the user from using, or paying for, more than they need. Off-peak electric heating has a major role to play in tackling climate change and reducing UK fuel poverty, and HHRSHs are ideal for those struggling to pay the bills or wishing to reduce their carbon footprint. The average storage heater is more than 20 years old, with more than 70% requiring the user to manually set the amount 40 Tackling fuel poverty in electrically heated homes is vitally important, with 16% of electrically heated homes in England and 50% in Scotland are fuel poor. These homes are typically smaller, less-well insulated and often rely on landlords or grant funding to complete the necessary upgrades required to make the building and its heating system comfortable, controllable and efficient. The continued rollout of HHRSHs to these properties is vital to meeting the climate and fuel poverty strategies that are top of the agenda in the UK today. www.gdhv.co.uk