EHS Heating boilers address the growing demand for home heating and hot water solutions and can offer a cost-effective alternative to current oil and LPG boiler installations. EHS electric combi boilers are designed as a direct replacement for a small gas combi boiler central heating system. EHS electric system boilers coupled to an unvented cylinder can replace a large combi boiler. They are the ideal electric heating options for wet central heating or underfloor heating systems.