Indirect heating systems (such as hot water) are preferred over systems with hot elements.
All unattended electrical heating equipment should be equipped with a manual reset over-temperature shutoff switch, in addition to normal temperature controls, if overheating could result in a fire or explosion.
Heating equipment with circulation fans or water cooling should be equipped with an interlock arranged to disconnect current to the heating elements if the fan fails or the water supply is interrupted.
Burners, induction heaters, ovens, furnaces, and other heat-producing equipment should be located a safe distance from areas where hydrogen is stored or dispensed, unless specifically designed for use with hydrogen.
When using hydrogen to create reducing environments, consider using non-explosive mixtures of inert gases (e.g., 5% H2 in Ar or N2) instead of pure hydrogen.