Our direct fired gas heaters are high quality space heaters, designed for industrial heating applications on construction sites, in warehouses, workshops, garages and other outdoor and semi outdoor areas. These gas heaters are very popular heating options, due to their simple and easy ot use design, low running costs and durability. Our gas powered space heaters are manufactured by some of the best brands in the business, including Master, Thermobile and Arcotherm, and they are available in a range of sizes, for heating a wide range of different areas. Please note that direct fired gas heaters are designed for well ventilated outdoor and semi-outdoor areas. They are not for use indoors or in poorly ventilated areas. This is due to the fumes produced during combustion and the fact that the flame produced by these heaters burns oxygen. If used indoors this could cause oxygen depletion within the space, which would be harmful to people.