Improving Cab Heating in the Bobcat S250 Skid Steer

[MikePhua]

The S250 and Its Role in Cold Climate Operations
The Bobcat S250 skid steer loader was introduced in the early 2000s as part of Bobcat’s high-performance S-series lineup. With a rated operating capacity of 2,500 pounds and a turbocharged diesel engine producing around 75 horsepower, the S250 quickly became a favorite among contractors, landscapers, and municipal crews. Its hydraulic system, auxiliary capabilities, and enclosed cab made it suitable for year-round use—including snow removal, winter grading, and cold-weather trenching.
Bobcat, founded in North Dakota in 1947, has long focused on compact equipment designed for harsh environments. The S250 was built with a sealed cab option, but not all units came with factory-installed heaters, leaving operators in northern regions searching for aftermarket solutions.
Terminology annotation:
- Cab Heater: A device that warms the operator compartment using engine coolant or electric resistance.
- Coolant Heater: A heater that uses hot engine coolant circulated through a core to produce warm air.
- Tilt Zone: The area affected when the cab is raised for service, which can interfere with mounted components.
- Aftermarket Unit: A non-OEM component installed post-sale to enhance or replace factory features.
Factory vs Aftermarket Heating Options
Installing a factory Bobcat heater in an S250 can be expensive and labor-intensive. The OEM unit is integrated into the cab’s HVAC system and requires routing coolant lines, mounting the heater core, and modifying panels. While effective, this installation is often avoided due to cost and complexity.
In contrast, aftermarket heaters offer flexibility and affordability. Units from suppliers like Summit Racing or agricultural equipment vendors can be mounted in various locations and connected to the engine’s coolant system using T-fittings.
Comparison:

• Factory heater: Seamless integration, high cost, complex install
  
• Aftermarket heater: Lower cost, flexible placement, variable performance
  

One operator mounted an aftermarket heater above the rear window using existing bolt holes. By running two heater hoses back to the engine and tapping into the coolant lines, they achieved excellent heat output—often needing to turn the unit off during operation.
Mounting Challenges and Cab Layout Limitations
The S250’s cab design presents unique challenges for heater installation. The cab tilts forward for engine access, and any component mounted in the tilt zone must be carefully positioned to avoid interference. Additionally, the left front corner houses the ECU and controller, limiting space for heater cores or fans.
Mounting considerations:

• Avoid placing heaters near the cab hinge or tilt path
  
• Use low-profile units to fit under the roof or above the rear window
  
• Relocate or raise the ECU if mounting near the left front corner
  
• Secure hoses to prevent chafing or pinching during cab movement
  

One technician noted that Bobcat cabs are among the most difficult for aftermarket coolant heater installs, especially compared to brands like Case or New Holland. However, with careful planning, a successful install is possible in under four hours using basic tools and materials.
Electric Heaters and Their Limitations
Electric cab heaters are often marketed as quick solutions, but they rarely perform well in skid steers. These units rely on battery or alternator power and typically produce limited heat. In the vibration-heavy environment of a skid steer, electric heaters tend to fail prematurely and offer poor directional airflow.
Drawbacks of electric heaters:

• Low heat output (typically under 1,500 BTU)
  
• No ducting or directional control
  
• Short lifespan due to vibration and dust
  
• High current draw may strain electrical system
  

Operators in cold regions consistently report that electric heaters are ineffective and not worth the investment. Coolant-based systems remain the preferred solution for sustained heat and reliability.
Installation Tips and Cost Estimates
Installing a coolant-based aftermarket heater in the S250 can be done with modest investment. Most units cost between $150 and $250, with additional expenses for hoses, clamps, and fittings. Labor time averages 3–5 hours depending on cab layout and hose routing.
Installation tips:

• Use high-quality heater hose rated for coolant temperatures
  
• Install shutoff valves for seasonal control
  
• Bleed the coolant system thoroughly after installation
  
• Test heater output before finalizing mounts
  

In one case, a contractor in Maine installed a Summit Racing heater for under $200 and reported excellent performance during snow removal operations. The unit was mounted above the rear window and connected using T-fittings at the engine block.
Conclusion
Heating the cab of a Bobcat S250 is essential for winter productivity and operator comfort. While factory heaters offer seamless integration, aftermarket units provide a cost-effective alternative when installed carefully. By understanding the cab layout, avoiding tilt zone interference, and selecting a reliable coolant-based heater, operators can transform their S250 into a cold-weather workhorse. In regions where winter lasts half the year, a warm cab isn’t a luxury—it’s a necessity.