Floor Heaters (FV, SD, SS) Strip Heaters

Thermon Heating Systems produces advanced Caloritech heating elements specifically designed as the ideal solution for floor heating passenger or cab compartments in transit rail applications. Emphasis on engineering, testing and quality has established Thermons Heating Systems reputation for safe, reliable, long lasting heating performance. Transit authorities across North America specify Thermon Heating Systems due to the proven track record and superior service performance of Caloritech™ Strip Heaters and Caloritech™ Calvane™ assemblies. Caloritech™ Strip Heater and Finned Strip Heater CaloritechTM Strip Heaters are specially engineered and manufactured using high quality materials. At the heart of every strip heater, high temperature alloy resistance wire is uniformly coiled and spaced over the heated width and length of the unit. Meticulous control of the coil process ensures uniform heat distribution throughout the heater. The coiled resistance wire is embedded in a special refractory material with excellent heat transfer and insulation properties. The heater assembly is encased in either an aluminized steel or stainless steel sheath and compressed under high pressure. A final heat treatment bakes and semi-vitrifies the refractory material for a resilient, heavy-duty heating element. Plated steel fins can be added at a nominal four fins per inch for improved heat transfer. Caloritech™ Calvane™ and Louvered Calvane™ Heating Assembly The patented CaloritechTM Calvane™ heating element is the most technologically advanced heating element on the market. A lightweight aluminum sheath with integral extruded fins provides a responsive design with exceptional heat transfer. At the center of the Calvane™, nickel chromium resistance wire or ribbon is encased in high grade compressed magnesium oxide to provide maximum performance and life expectancy. Each vane is spring mounted to a back plate complete with factory installed ceramic insulators allowing for easy installation and thermal expansion during operation. Superior performance characteristics make the Calvane™ the preferred element of choice in North America for transit authorities and car builders.


  • Length Range: 5.5 ½" to 83"
  • Maximum Voltage of 600V
  • Excellent heat transfer
  • Rugged construction for long lifespan.


Strip Heater and Finned Strip Heater Options

Sheath: Aluminized steel, stainless steel
Length Range: 5.5 ½” to 42 ¼”
Maximum Voltage: 600V. Applications above 300V require secondary insulators.
Terminals: One at each end, two on one end, three on one end
Approximate weight: 0.08 lbs/inch
Max allowable sheath temperature: Aluminized steel 1000°F, stainless steel 1200°F

Strip Heater and Finned Strip Heater Features

Corrosion resistant
Vibration resistant (IEC 61373 approved)
Rugged construction for long lifespan.

Caloritech™ Calvane™ and Louvered Calvane™ Heating Assembly Options

Sheath: Aluminum
Length Range: 10” to 83”
Width: 2¼” or 3¼“
Maximum Voltage: 600V
Approximate weight: Without back plate 0.02 lbs/inch. With back plate 0.08 lbs/inch.
Maximum allowable sheath temperature: 600°F

Caloritech™ Calvane™ and Louvered Calvane™ Heating Assembly Features

Excellent heat transfer
Fast heat up/cool down
Uniform heat distribution
Long life low watt density design
Corrosion resistant
Vibration resistant (IEC 61373 approved)
Easy installation.