Compressor & crankcase heaters for the best start ups

– Increasing the life time of the compressor

Compressor & Crankcase Heaters

Backer Springfield's compressor heaters and crankcase heaters are designed based on the NMH heaters.

These heaters are constructed with a metal sheath enclosure made of various materials including aluminum or stainless steel.

The end seals supplied will be per the customer specification in the application and include the proper lead wire type, insulation, length, and terminated as needed or provided with stripped ends for installation.

On the inside of the metal housing is our extruded heat cable insullated with either PVC, silicone, or fiberglass jacket material. The heat cable provides for a maximum wattage limited to 50 watts per foot in the design.

This heater is optimal for low wattage applications or a flamable refrigerant application where a flexible low cost design is required. The operating temperature of this design is well below the flash point of most refrigerants at approximately 500 degrees Fahrenheit.

Our design here similar to the NMH heaters provides for greater dielectric strength as well as safety in the construction of the element.

Backer-Springfield is a manufacturer of high-quality heating products and, as such, we are only setup to sell to resellers and O.E.M. manufacturers. We are unable to fulfill requests direct from consumers. If you are a consumer seeking a replacement element for your appliance, please contact the manufacturer of your appliance or your local professional service technician for information on the required heating element(s).

Compressor and crankcase
Compressor and crankcase
Compressor and crankcase

Technical data


Compressor and crankcase heaters are specially constructed to ensure that all materials are appropriate for your application. Our unique design provides optimal heat through conduction with greater dielectric strength. Backer sales and engineering support will ensure suitability for your application.


Rated Voltage

up to 600 V

Rated Power

up to 50 W/ft.


0.250in, .0260in (round)

0.25/0.75 in. (oval)


Backer has the ability to customize different materials & configurations in order to best meet your heating needs.

Heater Wire Insulation (based on W/ft)
Fiberglass Braided

Metal Sheath

Incoloy 800, 840

SS 300




Temperature Sensor (thermistor)
Temerature Control (bi-metal/electromechanical)
Thermal Cut-Off (TCO)
Standard Safety F



Heat shrink end seal - reduced overall thickness

Molded end seal - more robustness and flexibility


Many customer selectable options available


Example applications


  • HVAC Units
  • Commercial Refrigeration
  • Defrost
  • Transportation


  • Greater dielectric strength
  • Rapid Heat
  • Suitable for low flashpoint refrigerants
  • Lightweight
  • Cost effective

BACKER EHP INC. · 4700 JOHN BRAGG HWY · MURFREESBORO, TN 37127 · TEL: +1 (615) 907-6900 · [email protected]

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