Supporting your business with our Generations of Knowledge
For over 45 years, Grayson Thermal Systems has been a trusted partner for leading manufacturers and operators in the bus and coach, commercial vehicle, rail, and specialist off-highway sectors. Our commitment to innovation, precision engineering, flexibility, and customer service has helped shape the future of thermal management systems.
Our History
Founded in 1978 by Graham Hateley, our humble beginnings as a small radiator repair business in Birmingham, UK, have evolved into a global company with extensive manufacturing facilities in the UK and USA. Today, we employ over 300 employees across the world, with operations spanning three continents. Despite our growth, we remain a family-owned business, with three generations of the Hateley family among our ranks.
Our Services
At Grayson Thermal Systems, we design, manufacture, supply, and service a wide range of thermal management systems for various industries. Our portfolio includes:
- Battery Thermal Management Systems
- Vehicle Thermal Management Systems
- Electric Water Pumps
- Mechanical Seal Water Pumps
- Magnetic Drive Water Pumps
- HVAC systems for various applications
- Cooling Systems for Electric Motors & Power Electronics
- Hydrogen Fuel Cell Cooling Systems
- Combustion Engine Cooling Components
Our Expertise
With over four decades of experience, we have developed a comprehensive understanding of the thermal management needs of various industries. Our extensive portfolio and expertise enable us to design and manufacture customized solutions for leading manufacturers and operators in the following sectors:
- Bus & Coach
- Rail
- Commercial Vehicle
- Off-Highway
- Defence
- Special Vehicles
Innovation
At Grayson Thermal Systems, we are committed to innovation and R&D. Our experienced engineers and researchers are dedicated to developing cutting-edge thermal management systems that meet the evolving needs of our customers. Our state-of-the-art manufacturing facilities and testing facilities ensure the highest standards of quality and performance.
Service and Support
We understand that quick and efficient service is essential for our customers' success. Our extensive maintenance and servicing network, coupled with our dedicated aftermarket team, ensures minimal downtime and rapid response when needed. Our technical and logistical expertise is always available to support our customers worldwide.
Contact
At Grayson Thermal Systems, we are committed to providing exceptional service, innovative products, and expert support to our customers worldwide. Explore our products and services, and let us help you thermalize your zero-emission journey.

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