Advancing Thermal Management.
Today. Tomorrow. Together.
1978 – 2025
Thermal management systems for the zero-emission applications of today and tomorrow
Whether you are hauling goods across the world, storing renewable energy off the grid or transporting passengers to new destinations, Grayson Thermal Systems is here to make a net-zero tomorrow a reality.
We design, test, manufacture, supply, and service innovative thermal management systems for OEMs across the world in the bus and coach, commercial vehicle, defence, off-highway, rail, special vehicle, and stationary power sectors.
For over 45 years, we have worked closely with leading manufacturers and fleet operators to meet their thermal management and HVAC needs, delivering advanced solutions that perform even in the most extreme conditions.
Discover how a dedication to innovation, precision engineering, collaboration and customer service is helping to create the next generation of zero-emission applications for today and tomorrow.
Thermal management systems for your vehicles and machinery
From efficient heat pumps for the next generation of zero-emission vehicles to cooling modules, we have solutions ready to support your project today.
Check our comprehensive range of field tested and proven thermal management systems, ready to deliver high-performance heating and cooling for your application today. Or, contact us to discuss a solution built specifically to meet your exact needs.
Featured products
From precise battery temperature regulation to complete vehicle thermal management systems, our solutions can help maximise the performance of zero-emission applications ensuring they remain competitive, today and tomorrow
Aftermarket services
Supporting your business is at the heart of ours.
We understand the challenges faced by bus and coach operators, the need to respond rapidly, and the importance of working together to minimise downtime and costly VORs.
From quickly supplying the genuine spare parts you need today, to servicing and maintaining your bus’s system so they are ready for tomorrow, our dedicated Aftermarket division is ready to help.
We have the logistical capabilities and technical expertise to support bus operators. We are also responsible for managing the heating and air conditioning service schedules for the UK largest bus and coach operators.
Discover how we can help support your fleet operations today.
Experts in your sector
From excavators operating in the rugged conditions of mining and construction sites to buses and coaches transporting passengers in comfort, our thermal management systems keep multiple sectors moving.
Bus & Coach
Supporting the bus and coach sector’s zero emissions journey
Learn MoreCommercial Vehicle
Keeping trucks moving and drivers comfortable
Learn MoreDefence
Robust systems ready for your operations
Learn MoreOff Highway
Digging deep to deliver heating and cooling innovation
Learn MoreRail
Helping to keep rolling stock rolling
Learn MoreSpecial Vehicle
Specialist thermal management solutions for special vehicles
Learn MoreStationary Power
Supporting the stationary power sector with heating and cooling innovation
Learn MoreContact us
Looking for more information about our thermal management products, aftermarket parts and servicing, or need technical support from one of our expert engineers? Complete the form below and we will respond as soon as possible.
All the Latest News
Stay up to date with the latest news, advice and useful thermal management information from Grayson Thermal Systems.
High-Voltage PTC Electric Water Heaters for Electrified Heavy Vehicle and Stationary Power Sectors Launched
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Grayson Aftermarket Achieves Major Milestone with 700+ Electric Buses Under Servicing Contracts
Read More »Accreditation
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