TransO2-LHB Retrofit™
TransO2 is designed for progressive integration into existing rolling stock, enabling railway operators to introduce environmental intelligence, diagnostics, safety monitoring and resource optimisation without requiring an immediate replacement of the complete HVAC architecture.

Representative engineering visual — indicative rooftop fitment envelope on an LHB coach. Final module layout is subject to detailed coach survey, structural clearance and RDSO/OEM approval.
System Architecture
- Baseline coach survey
- Sensor & data layer installation
- CORE-ERMC commissioning
- Safety integration (SAFE-C)
- Resource management (AQUA-R / ENERGY)
- Advanced thermal / CO₂ options (THERM-R / CARB-X), where validated
Installation Approach
Staged fitment during scheduled maintenance windows, beginning with the sensor and data layer, followed by safety integration, then progressive module addition.
Interfaces
- Existing RMPU / HVAC control
- Coach electrical supply
- Depot data network
Engineering Considerations
- Structural load path on existing roof mounts
- Cable routing within existing conduits where possible
- Minimal disruption to existing systems during fitment
Expected Validation Process
Bench validation of each module, followed by single-coach fitment and instrumented trial operation before any wider rollout is considered.