Bison 4000A Bunk Air Heater Kit

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Product Overview

The Bison 4000A is a microprocessor-controlled compact fuel furnace designed for no-idle air heating of driver cab, freight compartments, passenger and crew compartments of commercial vehicles and motor homes. It operates independently of vehicle’s engine and built-in OEM heating systems. The heater consists of heat-producing combustion air chamber, process (cabin) air chamber and a heat exchanger that transfers heat to the inside of the vehicle.

Backed by a 2-Year Warranty against all manufacturer defects.


4kW/13,650 BTU no-idle rorced air heater kit:

  • Programmable digital timer and all required hardware for basic installation.
  • Includes 1m air duct with one register
  • Fuel pump with 7m fuel line
  • Fuel pickup tube and a tee
  • Wiring harness straps
  • Screws
  • Clamps and straps
  • Exhaust and intake tubing
  • Fully Assembled Wiring Harness

Product Information

  • FUEL: Diesel
  • MODE: Air
  • VOLTAGE: 12V, 24V
  • CONTROLLER: Digital


Specification Value
Heat Output: BTU/hr (kW/hr) 3071 (0.9) – 13649 (4.0)
Diesel Fuel Consumption: U.S Gal./hr (L/hr) 0.03 (0.11) - 0.13 (0.51)
Electric Power Consumption: Amps (Watts) @12VDC 0.67 (8) - 2.83 (40)
Electric Power Consumption: Amps (Watts) @24VDC 0.33 (8) - 1.42 (40)
Voltage Operating Range: Volts DC (for 12V models) 10.5 – 16 with Low and High Voltage Protecton
Voltage Operating Range: Volts DC (for 24V models) 21 – 32 with Low and High Voltage Protecton
Operating Modes Setpoint – Adjustable 41°F to 95°F (5°C to 35°C)
Constant Heat Output Selection – Adjustable Min. to Max.
Air Circulation / Ventilation – No Heat, Fan Only
Dimensions: LxWxH, Inches (mm) 14.61 x 5.51 x 5.91 (371 x 140 x 150)
Weight: lbs (kg) 9.92 (4.5)

Warranty Information

2-Year Limited Manufacturer's Warranty against manufacturer defects. Warranty does not cover improper installation or abuse after delivery. Adventure Vehicle Supply, LLC can provide remote installation support and troubleshooting for our customers. In the event of a heater failure, please do not remove or alter the unit without troubleshooting first. With the heater installed, we can troubleshoot any issues, quickly verify the warranty claim, and expedite a repair or replacement if needed.


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