Trusted and proven
thermal management solutions

Ranges to meet your needs

Whether you are searching for a system to optimise the performance of critical components such as batteries, or solutions to maximise passenger and driver comfort, Grayson Thermal Systems can help.

We focus on quality and reliability throughout every phase of our design and manufacturing process to ensure low life cycle costs, easy installation and integration, and invaluable peace of mind for you.

For HVAC and thermal management solutions capable of handling any climate, be it in the bus and coach, commercial vehicle, off-highway, rail and specialist vehicle sector, explore our product ranges.

Our products ranges

Battery Thermal Management Systems (BTMS)

Our field-proven BTMS range ensures your vehicle’s batteries enjoy maximum performance throughout their service life.

Electric Water Pump range

Developed to meet your requirements in the harshest environments, our high-performance Electric Water Pumps are built to deliver.

Cooling Systems range

Prevent your powertrain from overheating and protect temperature-sensitive components with our range of advanced cooling systems.

HVAC range

Ensure drivers and passengers experience optimum comfort, no matter the climate or application, with our complete HVAC systems.

Vehicle Thermal Management Systems (VTMS)

Your HVAC and battery heating, air conditioning and cooling management covered by a single and compact module.

Electric Water Heater range

Deliver the ideal constant temperature in even the coldest of climates with our durable Electric Water Heater range.


A comprehensive range of high-quality and robust, off-the-shelf components ready to be installed in your vehicle.

Learn more about us


We work with you to provide thermal management solutions that meet your needs throughout the lifetime of your vehicle. Discover more about our aftermarket services today.


Looking for more information? From product brochures to detailed technical specifications, all our literature is easily and freely accessible at our Downloads Centre.


From innovative electric-powered and hydrogen-powered buses to retrofit solutions for off-highway applications, we have the experience and expertise to meet the needs of your application.