Your trusted heat exchanger manufacturer - From first principles to lasting partnerships Heat exchanger manufacturer since 1904, we design and produce to custom specifications. We work in collaboration with our customers to solve their challenges. We deliver bespoke solutions which provide lasting benefits. We have expertise and experience in sectors such as oil& gas, power generation & distribution/grid, including renewable energy (e.g. nuclear, hydropower, nuclear, and biomass), circular economy, and defence. Our customers are global brands but also SMEs worldwide. Therefore, we know what it takes to deliver long-lasting, durable heat exchange solutions. It’s about partnership. We design and manufacture a wide range of heat exchangers. It includes large generator and motor coolers (CACW, CACA, Avantair), enhanced heat exchangers with extended fins, and shell & tube heat exchangers. We have the engineering capability you require. Should you need to refurbish, repair or replace your equipment, we’re also here to help. As a partner, we listen to you and your needs. We appreciate your businesses, sector and industry and deliver optimal solutions you can rely on confidently. Previously known as HEI, Thermo Engineers, Britannia Heat Transfer, Thame Energy Services and Britannia Heatex, we have over 100 years of continuous experience in the heat exchange industry. Throughout our history, we have been at the forefront of technology, developing new and pioneering solutions to meet the changing demands and challenges of global industry.