Immersion Heaters

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Immersion Heaters are primarily used to help maintain oil temperature to avoid cold startups in cold operating conditions.  They may also be utilized in water and other solutions.

Standard Features:

  • Keeps oil at approximately 80°F
  • Automatic built-in fixed setting thermostat normally closes at 70°F and opens at 100°F
  • Will not burn oil
  • UL recognized and CSA certified
  • Weatherproof wiring enclosure (NEMA 4)
  • For tanks larger than 500 gallon use multiple heaters
  • Heaters over 10 amps, 480 volt, or three phase must be used with a contactor
  • Amps = Watts ÷ Volts for single phase
  • Amps = Watts ÷ (Volts x 1.73) for three phase
  • Wiring diagram included with heater


  • Heaters must be mounted horizontally
  • Do not mount from the top down
  • Heaters must be immersed at all times
  • Heaters are not rated for DC current


Product Options

Common Options Available

  • Ambiant Thermostat: open at 60° F/close at 40° F - 10A/240 VAC max (Part No. T-60)

Custom Options Available

  • Three phase availabe on ET8 models (add -3 to part number)
  • Explosion proof models available

Minimum quantities may apply.




LDI - Corporate  Click for map LDI   Click for map
Precision Machining & Assembly Fabrication & Assembly
1864 Nagle Ave. 12901 Jim Dhamer Dr.
Manitowoc, WI  54220 Huntley, IL  60142
PH: 920.682.6877                         
FAX: 920.684.7210                                    



Our talented team of degreed and professionally certified Engineers, Quality Assurance, Production and Customer Service staff have many years of experience in the industry.  Their attention to detail and ability to collaborate with our clients to solve their problems is reflected in the 50+ years we have been in business.


Customer Service: 

920.682.6877, option 4

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