Products
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Powertrain and People HVAC
Integrated thermal management and HVAC
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Complete Thermal
Management Systems
All-in-one battery, power electronics, and cabin HVAC systems
Chassis-mounted complete thermal management
Double-deck bus complete thermal management
Rooftop-mounted complete thermal management
Driver and Passenger HVAC
HVAC solutions for climate comfort
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Cabin HVAC
Reliable cabin heating and air conditioning
Demisters for windscreen defogging
Rooftop air-conditioning systems
Heating
Fast-response cabin and floor heaters
Cabin heating modules
Floor heating modules
Heat Pump
Ultra-efficient reversible heat pumps
Driver cabin heat pump systems
Hot liquid heat pump systems
Powertrain Thermal Management
Thermal control of batteries, engines, motors and electronics
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Battery Thermal Management Systems
Advanced battery heating and cooling to life and performance
Mobile battery thermal management systems
Stationary battery thermal management systems
Rail battery thermal management systems
Coolers
Liquid-cooled radiator modules for BEV, ICE & FCEV
Power electronics and traction motor cooling systems
Hydrogen fuel cell cooling systems
Internal combustion engine cooling systems
Thermal System Components
Robust core components for thermal systems
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Auxiliary Heaters
Electric water heaters for clean, instant coolant heating
PTC and resistive electric water heaters.
HMI Controller
User-friendly HMI control panels for drivers
Climate control HMI panels
Electric Water Pump
Stable coolant flow for precise heating and cooling
Canned motor electric water pumps
Magnetic drive electric water pumps
Sensor
Precision sensors for intelligent thermal system monitoring
Temperature sensors for thermal monitoring
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About Us
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Generations of Thermal Management Expertise
Efficient cabin & saloon comfort & visibility for drivers, operators and passengers.
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Our Mission, Vision & Values
Capabilities
Leadership Team
Careers
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Services
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Supporting your business is our business
Efficient cabin & saloon comfort & visibility for drivers, operators and passengers.
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Services & Maintenance
Ensure your vehicle’s HVAC and cooling systems continue to provide optimum performance.
Aftermarket Parts & Products
Reliability is essential for vehicle OEMs and operators to minimise downtime.
Technical Support
We know how important it is for you to be able to quickly get an answer to a technical query.
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Sectors We Serve
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Thermal management experts in your sector
Efficient cabin & saloon comfort & visibility for drivers, operators and passengers.
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Bus & Coach
Comfort and performance across all routes
Commercial Vehicle
Thermal performance for every mile
Defence
Mission-critical thermal management
Off Highway
Helping OEMs break new ground
Rail
Helping to keep rolling stock rolling
Special Vehicle
Built for every unique application
Stationery Power
Keeping power systems performing
Talk to an Expert
Talk to an Expert

Thermal Innovation Arrives at Busworld this October

Join us on the journey of complete thermal innovation coming this October. Intelligent, efficient and engineered for performance – come onboard at the launch this October at Busworld.

Book a Meeting at Busworld

The Next-Generation System
for Next-Generation Electric Buses

In October, the world of thermal management changes completely with the launch of our new range.

Intelligent control software. Ingeniously compact design. One complete package. A new era of thermal management is on the way, capable of handling every demand, from battery and fuel cell to cabin and saloon HVAC and power electronics. Peak performance, efficiency and comfort – and it’s almost here.

Don’t be left behind! Join us at Busworld Europe – stand 532 – in Brussels, Belgium, and discover how your next generation of electric bus can benefit from a next-generation thermal management system.

Book Your Busworld Meeting Today
Can't Attend? Sign Up to Not Miss the Reveal

Join Us to Discover Complete Thermal Management

Busworld Europe 2025

Belgium, Brussels
Hall 5 – Stand 532

4 to 9 October 2025

10am – 7pm
Brussels Expo, Belgiëplein 1, 1020 Brussels, Belgium

Book Your Busworld Meeting Today

What’s Coming, and Why It Matters

All will be revealed this October but until then, here is a sneak peek of some of the benefits our new system will bring to transit bus OEMs.
Book a meeting and Step on board

See the Future of Thermal Management Up Close

Book a time & date to meet our team at Busworld and be among the first to discover the next stop in thermal innovation. Ask questions, explore technical insights, and explore how our latest innovation can support your next project. Book a Time To Meet at Busworld

Can't Make the Show? Don't Miss the Movement.

Not attending Busworld doesn’t mean you have to miss out. Subscribe to get exclusive launch announcement content delivered straight to your inbox — including videos, technical breakdowns, and insights you won’t find anywhere else.

Sign Up for Launch List
Sign up and be first in line to discover our new complete system
 
Discover more about Grayson

Download Our Transit Bus Thermal Solutions Overview

Before we reveal our new system, get to know Grayson and our full range of thermal solutions engineered for transit bus OEMs. This overview includes our off-the-shelf components and systems, integration expertise, and bespoke development capabilities — everything you need to know to explore how we can support your next platform. Download the Bus Thermal Solutions Overview

Discover More About Grayson

Learn more about how we’re working together with bus OEMs to redefine what’s possible in thermal management, with smarter systems, scalable designs, and a commitment to innovation.