Electric Bus HVAC Systems
Electric Bus HVAC Systems
Eco-friendly air conditioning and heater systems for every electric bus type.
Thermo King’s zero-emission bus HVAC units deliver electric air conditioning and heating for all electric bus types. Already compatible with hydrogen fuel cell, battery-electric and hybrid buses, these systems provide future-ready flexibility while supporting your organization’s decarbonization roadmap. Available in three integration-friendly rooftop and rear-mount designs, the TE-Series, RLFE-Series and AMII E-Series serve a wide range of electric bus types without compromise.

Electric bus HVAC system features
- Optimum cooling capacity at all bus speeds
- Dramatically improved reliability
- Hermetically sealed and tested at the factory; no field plumbing, evacuation or charging
- Integrated electric compressors with variable speed control
- Reduced number of maintenance items
- No tubing or hoses needed to connect the HVAC unit and compressor
- Energy-efficient R-407C refrigerant

Benefits of Thermo King electric bus HVAC systems
Keeps riders comfortable
Maximize passenger comfort on public transportation. Thermo King offers a wide range of compressor and fan variability, allowing for precise load matching.
Reduces maintenance and repair costs
Optimize operational costs and reduce components with a single variable speed compressor, minimizing repairs, cutting replacement costs and ensuring precise temperature control.
Simplifies system management
Achieve control over the entire bus’s climate system, including floor heaters and driver’s defroster, through a single controller, the Thermo King IntelligAIRE® III.
Built for zero-emissions comfort
Range-minded efficiency: High efficiency cooling and heating extends battery life and minimizes downtime.
Fast comfort recovery: Maintains a comfortable cabin temperature at stops and quickly recovers after frequent door openings.
For even greater efficiency and sustainable heating performance, explore our electric heat pump solutions.
Electric bus HVAC system series
All three series are designed to integrate with bus OEM preferences while delivering high-efficiency comfort across climates.
TE-Series: Rear-Mount Design
Compact rear-mount configuration for easy integration without rooftop changes.
RLFE-Series: Unique Through-Roof Design
A through-roof layout that streamlines installation and service access while preserving roof profile.
AMII E-series: Low-Profile Rooftop Design
Sleek, low profile rooftop units ideal where height and aerodynamics matter.

Committed to sustainability
These units are part of our all-electric portfolio, called evolve™. The evolve portfolio aligns with our customers’ goals to transition to more sustainable solutions for their fleets, and will help advance Trane Technologies’ 2030 Sustainability Commitments, including its Gigaton Challenge to reduce customer greenhouse gas emissions by 1 billion metric tons.
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Unmatched service and support
With nearly 200 locations across North America, the Thermo King dealer network gives you the support you need, whenever and wherever you are, with factory-trained expert service and genuine Thermo King parts.