About Sirus

Sirus is an Irish headquartered HVAC, BMS & Energy Efficiency Solutions and Service provider in buildings.

Sirus started out as two separate companies in separate cities. Over 30 years ago, Frank Caul was operating an HVAC (Heating, Ventilation and Air Conditioning) company called Temperature in Cork while James Byrne had just started a new BMS (Building Management Systems) company called Compute Systems in Dublin. Due to changes in technology, the HVAC business required a temperature controlling system. At the time the market for building management systems, which control HVAC equipment and manage energy use, was beginning to take off.

The two companies merged to form a new company, Sirus, with a combined staff of 10 and initially operated by providing general HVAC services and carrying out BMS projects for commercial operations.

Sirus has come a long way since 1988, and now employs over 120 staff specialising in delivering critical environments to the pharma, biotech and data centre sectors.

In 2018, SAUTER, the international, Swiss-based, leader in building automation technology acquired a majority shareholding in Sirus. SAUTER has been providing solutions in control and HVAC service and maintenance for more than 100 years and chose to invest in Sirus as the leading building services company in Ireland.
Sirus - SAUTER Group

Precision and excellence in delivery and loyalty and longevity in approach are the common characteristics both Sirus and SAUTER share. Sirus make up a significant part of the SAUTER business, being the 3rd largest company in their portfolio.

Today, the Sirus team are a maturing and ambitious workforce and we are very aware that our people and their expertise are our greatest asset.

Through our unique blend of mechanical, electrical, refrigeration, thermodynamic and automation skillsets along with quality products; our promise is to deliver and maintain compliant, comfortable workspaces and energy-efficient buildings in partnership with our customers, other service providers and suppliers.

If you are interested in joining Team Sirus, take a look at our careers page for open opportunities.

We are proud to be recognised and accredited to a number of standards including ISO 9001, ISO 14001 and ISO 45001. These standards encourage continuous improvement in our business and strategically align with our commitment to being a top employer and the best in class in the area of building environmental control and energy management.

The History of Sirus on a timeline from 1988 to 2023

Our promise is to deliver and maintain compliant, comfortable, healthy workspaces and provide the controls to conserve energy in buildings in partnership with our customers, suppliers and other service providers.

Sirus - SAUTER Group

Sirus House
Unit 13, The Westway Centre
Ballymount Avenue
Dublin, D12 FW63

+353 1 460 2600
+353 1 450 7968

The Well
Unit 2018
Orchard Avenue
Citywest Business Campus
Dublin, D24 FR88

+353 1 450 7968

Sirus Cork
Unit 5, Centrepoint
Marina Commercial Park
Cork, T12 H7DV

+353 21 4315552
+353 21 4315556

Sirus NI
i2 CIDO Innovation Centre
73 Charlestown Road
Co. Armagh, BT63 5PP
Northern Ireland

+44 28 9085 0605

Let’s talk about your project!