Energy Efficient Smart Storage Heaters With Digital Programmable Controls. LOT 20 Storage Heaters are the latest smart storage heaters which are ideal when replacing older storage heaters. These modern storage heaters use Less Energy Compared to a Standard Manual Storage Heater. The Elnur Ecombi ECOSSH and ECOHHR Smart Storage Heaters use the Latest Technology and are LOT 20 Compliant Storage Heaters. These storage heaters with Programmable Digital Controls are modern and efficient electric Storage Heaters that manage electricity consumption and optimise heat management, adapting Daily to your Heating needs whatever the Weather conditions. Compare the Elnur ECOSSH storage heater features to other leading brands. such as the Dimplex XLE, Creda TSRE, Heatstore HSDS and the Sunhouse SSHE models.