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DB-Series: Complete Thermal Management for Electric Double-Deck Buses

The DB-Series is Grayson’s Complete Thermal Management System engineered specifically for double-deck electric buses. Integrating upper and lower deck HVAC, battery thermal management and power electronics cooling, the series uses advanced reversible heat pump technology, smart heat recovery and intelligent control to deliver efficient, all-vehicle thermal performance.

DB-Series

CTMS DB2

Integrated CTMS for battery-electric double-deck buses, combining multi-deck HVAC, battery thermal management, and power electronics cooling with intelligent control and waste-heat utilisation.

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Keeping passengers and batteries at the right temperatures

About Our DB-Series

Developed for the unique demands of double-deck passenger buses, the DB-Series delivers integrated, multi-zone thermal management from a single intelligent system. Reversible heat pump technology, waste-heat recovery and Grayson’s Intelligent Automatic Controller dynamically balance energy across upper and lower saloons, batteries and power electronics.

Our Capabilities

Configured to Your Specifications

Alongside validated DB-Series catalogue systems, Grayson provides full engineering, software, testing and manufacturing capability to configure or develop bespoke CTMS solutions. Flexible control logic and modular hardware enable OEMs to customise thermal performance, interfaces and requirements. Learn More

More CTMS Series

Grayson’s CTMS range also includes integrated, all-in-one chassis-mounted and roof-mounted systems suitable for electric on-highway and off-highway applications.