Welcome to Open System Solutions


Established in 2006, Open System Solutions (OSS) is the UK’s leading brand of building control and underfloor heating & cooling systems throughout the UK and the global market. Read More

Building Management Controls

OSS's unique range of BMS controls based on a small footprint and a powerful multi-protocol platform complimented with OSS’s transparent, straight forward commercial approach. Read More

Underfloor Heating & Cooling Control Systems - Hydro Line

One of the most extensive and expansive sectors of the building industry has been how we can heat our properties, both efficiently and affordably. Read More

You're In Good Company...

Group Overview

AEI Group is a leading UK provider of electronic manufacturing services (EMS), bespoke Filtered Connectors and world beating OEM solutions to the building controls, HVAC and underfloor heating & cooling markets. Our extensive range of manufacturing services and OEM solutions are delivered through our group of companies: Esprit Electronics, Icon Electronics, AEF Solutions & Open System Solutions (OSS).