An immersion heater is an electric heating apparatus consists of a bundle of tubular heating elements which are submerged in a tank or container to heat a liquid, such as water, oils of various viscosity, viscous materials, solvents, process solutions, liquidous chemicals, and gases. It is designed and used for direct contact heating to increase or maintain the temperature of the fluid to attain required values for process indicators such as temperature, viscosity, pressure, solubility, or miscibility.
Immersion heaters are widely used for many applications such a freeze protection, process temperature and viscosity maintenances, steam generation, chemical reactions, flow control etc. for many industries including oil and gas, water treatment, transportation, agriculture, construction, power generation, and mining.

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The circulation heater can be mounted horizontally or vertically and piped in line with your process inlet and outlet connections. The process air, liquid, or gas is force flowed from the inlet side of the heater vessel over the metal sheathed nichrome resistive heating elements to the outlet side of the heater vessel. This effectively allows 100% heat transfer efficiency from heater element to the process air, liquid or gas.