Our Story

Since starting out in 2003 as the service division of Diffusion Group, a UK leading HVAC manufacturer, we have grown to become a nationwide provider of technical maintenance solutions and compliance services.

Our purpose is to help our clients maintain their buildings, improve their working environments and reduce their running costs.

To achieve this we have developed a huge depth of technical expertise within the M&E sector; having built a forward thinking, highly skilled team specialising in building performance evaluation and low carbon technologies.

For more information about us or to discuss any specific requirements you have, call us on 0333 207 4245 or email us at info@evotech.co.uk.

Following the MBO of Stroma Group, backed by LDC Corporate Finance, Stroma Evolution rebranded to Evotech to create an independent UK-wide provider of building maintenance services.

Stroma Group, a UK market leader in the field of building sustainability, energy performance and compliance, acquired SIAS FM to enter the UK building services market under the Stroma Evolution brand. 

Diffusion Group acquired the service division of SIAS Building Services to create a national provider of HVAC maintenance under the SIAS FM brand.

Diffusion FM was established as the service division of Diffusion Group, a leading UK based manufacturer of heating, ventilation and air conditioning products.