The leading supplier of Cooling, Heating & Air Conditioning Products

Grayson Thermal Systems design, manufacture, and supply engine cooling, heating, and air conditioning products to commercial vehicle and specialist vehicle industries worldwide.

A proud UK manufacturer, Grayson works in partnership with our customers to develop innovative ways for them to improve vehicle performance and reliability.

Formed in 1978, we remain a privately owned, family business. Exceptional staff within the organisation ensure the core beliefs that have led to our success remain at the heart of our business operations.

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technical sales +44 (0)121 700 5610 general enquiries +44 (0)121 700 5600

Product Highlight

BTMS Battery Thermal Management System

What is the Battery Thermal Management System? Our Grayson Battery Thermal Management System optimises the temperature of battery modules for all applications of electric vehicles. The Battery Thermal Management Systems have a heat and cool capability to maintain the battery cell temperature within the specified range. The system, controlled by Grayson Thermal Systems smart controller reacts to the cell temperature. Our BTMS offers cooling during fast charge periods or high ambient territories. Heating following a period of sustained low ambient in cold climates. GTS have a standard range of rooftop mounted modules and bespoke integrated systems packaged into the vehicle chassis and body. DRIVING CONSTANT TEMPERATURE IN THE HOTTEST & COLDEST CLIMATES – WHATEVER THE CONDITION – BTMS STANDS UP TO THE CHALLENGE

Latest News

Thermal Lines Spring 2018 is here!

It has been a fantastic Spring for Grayson Thermal Systems. We have opened a new Grayson facility, gained new team members and we’ve been accredited with awards. Download and read Thermal Lines now and find out all about whats happened ...


Products in Our Range
Products in Our Range
Alexander Dennis
DAF Truck
Dennis Eagle
Douglas Equip
Iveco Truck
MAN Truck
Mercedes / Evobus
Mercedes Truck
New Flyer
Nova Bus
Scania Bus
Scania Truck
Van Hool
Volvo Bus
Volvo Truck
Wright Bus