Indirect fired heaters are sophisticated, reliable, and highly efficient heaters. Ideal for places where theres limited ventilation, or where people are present, as they deliver huge volumes of clean, dry, fume free heat safely and economically. The Sealey 102,000Btu/hr Indirect Space Warmer has a 30kW heat output ideal for heating marquees, events, halls, workshops, warehouses, construction sites and more. Combustion by-products are exhausted out of the top of the heater through the flue. Ducting is available, Model No. ABI1000AK1 sold separately, allowing you to safely vent exhaust fumes away from the space. With a thermostat control it allows you to set a required ambient temperature and maintain it. The thermostat will switch the heater on and off as required to maintain the set ambient temperature, this saves fuel and adds extra convenience. The indirect heater includes a stainless-steel combustion chamber with fan cooling, built-in flame sensor, Danfoss pump, electronic flame con