Rail is moving forward. So should its HVAC systems.
Naturail brings Merak's expertise together in one future-ready range, helping operators meet evolving environmental, passenger wellbeing and cybersecurity requirements. From natural refrigerants and advanced air purification to secure HVAC control, each solution addresses a critical challenge facing rail today. Designed for new rolling stock and existing fleets, Naturail turns change into a practical path forward.
THREE PILLARS, ONE PROMISE

Greenair
Move towards lower-impact cooling with natural refrigerant HVAC solutions engineered for the realities of rail.

Cleanair
Create healthier onboard environments with advanced air filtration and purification designed around passenger wellbeing and operational needs.

Smartair
Bring intelligence and cybersecurity into HVAC control with a connected, CRA-compliant solution built for the future of rail.
MODERNIZATION DOESN’T ALWAYS MEAN STARTING OVER
Naturail helps operators bring existing railway HVAC systems up to today's environmental, performance and cybersecurity expectations. From natural refrigerant conversions and air purification to advanced HVAC control, solutions can be engineered around existing equipment and fleet requirements. This approach helps extend system service life, improve efficiency and support regulatory readiness while limiting disruption to operations. Because building the future of rail also means making more of the assets already in service.
BREATHING NEW LIFE INTO RAIL
Rail is evolving, and every system onboard has a role to play. Naturail brings together three essential dimensions of tomorrow's HVAC: lower-impact cooling, healthier air and secure, intelligent control. One range, designed to help new and existing fleets move forward with greater efficiency, resilience and responsibility. Because breathing new life into rail isn't about changing everything. It's about changing what matters.

