Norske Backer’s submersible oil heater is intended for heating hydraulic oil to reduce wear and tear on the system.
The heating also reduces some water content in the oil. Of course, it also works for other liquids. It is easy to use in existing equipment, as no permanent installation is required. It is easily attached with integration magnets to the bottom of e.g. the idea.
An additional advantage is that you do not need to empty the tank, weld or clean before use.