We’ve Upgraded Our ORANGE™ Locomotive Air Conditioner (A/C)

The ORANGE™ Locomotive Air Conditioner

We’ve upgraded our patented “ORANGE” Locomotive Air Conditioner (A/ C) to contend with current environmental and climate changes meeting HIGH AMBIENT conditions of up to 130 degrees.

ORA-2023 “Orange” Modifications

  • Introduced “High Temp” motor controller to combat high ambient conditions.
  • Switched to electronic thermostat for improved temperature control.
  • Eliminated variable motor speed to shut down motor, enabling less heat generation in high ambient temperatures.
  • Switched motor speed controller to relay operated.
  • Regulated charge to eliminate overcharging in the field.
  • Additional cooling fans and vents on compressor drive module for high ambient temperatures.
An orange train with the following text beside it "The Orange Locomotive Air Conditioner"
The ORANGE Locomotive Air Conditioner

Flexible Modular Design

Complete heavy duty, light weight construction component system including:

  • Evaporator / Air Handler
  • Compressor with 72 VDC brushless motor
  • Condenser
Specifications of the Orange Air Conditioner for Locomotives
Specifications of the Orange Air Conditioner for Locomotives

Key Benefits:

  • Easy, lower-cost installation and operation
  • Can be mounted in various vented locations on the locomotive
  • Designed for low head clearance areas

The Orange AC integrates itself seamlessly into existing cabin interiors, without looking like a retrofit.

A collage of photos showing the installation of the orange locomotive AC
Installation of the Orange Air Conditioner for Locomotives


  • Refrigerant – Non-Ozone depleting R134A (Optional R-1234YF Low GWP)
  • Compressor drive – Brushless 10000 Hr motor with fan cooled controller
  • Compressor – Non-hermetic compressor
  • Evaporator – 9 kW
  • Condenser – 12 kW
  • Controls – Manual fan speed, Electronic thermostat
  • Compressor Motor Drive Box Dimensions – (L x W x H) (mm)
    772 x 269 x 264 (Inches) 30.39 x 10.59 x 10.39
  • Evaporator Assembly Dimensions – (W x D x H) (mm)
    927 x 290 x 155 (Inches) 36.5 x 11.4 2 x 6.1
  • Condenser Dimensions – (W x D x H) (mm)
    722 x 290 x 3 23 (Inches) 28.43 x 11.4 2 x 12.72
  • Weight – Approximate kit weight:
    (kg) 136
    (lbs) 300
A worker on the tracks wiping the sweat from his forehead
Beat the heat

High Ambient Cooling

VRF (Variable Refrigerant Flow) technology works like the accelerator in a car, by matching the Out-Put to the Load. The compressor starts up smoothly and ramps up until it meets the demand. When the Thermostat is satisfied, it ramps down to turn off. This keeps the motor cooler in high ambient conditions.

Saves Energy

Running directly off the locomotive’s batteries, the Orange will save up to 30% in energy consumption while reducing power surges in the 72 VDC system.

No invertor means 32,000 BTU of cool reliability.

Julie Briscoe, Operations Manager, INPS Group said:

“Our team of qualified technicians will provide support and technical training on the installation of the Orange AC, as well as provide continued support for troubleshooting.”

A thermometer showing 34.6 degrees and text saying "Beat the Heat! Keep your cab cool"

This article was originally published by INPS Group.

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