The Grant Vortex Pro External Combi 26kW Oil Boiler is a high-efficiency oil-fired boiler designed for external installation, ideal for homes not connected to the gas grid. It provides both central heating and domestic hot water, freeing up indoor space. Key features include an oil-fired system, a 26kW output suitable for medium homes, and a durable, weatherproof external casing. The boiler boasts built-in front protection, a factory-fitted multi-directional flue, and a 24-litre expansion vessel as standard, designed for easier installation and servicing. Its larger heat exchangers enhance hot water performance, and electronic temperature controls allow for condensing mode operation. The unit includes internal frost protection, neon diagnostic indicators, a factory-fitted condensate trap, and a low NOx Riello burner with a plug and socket connection. The casing has a high-quality external powder-coated finish, and it achieves an average SEDBUK SAP 2009 rating of 89.50%.