About Sirus

Our mission is to be an innovative leader in building environmental control and energy management through a unique blend of solutions and services.

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. Almost 30 years ago, Frank Caul was operating a HVAC (Heating, Ventilation and Air Conditioning) company called Temperature in Cork while James Byrne had just started a new BMS (Building Management System) 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 100 staff specialising in delivering critical environments to the pharma, biotech and data centre sectors. Sirus understand that risk management through the project and operations lifecycle of facilities is crucial to the success of our customers.

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.

Check out our new HQ!

Our sustainable approach extends to our own company, where we have created a healthy indoor climate in our office The Well building.

We invite you to come and visit The Well to see first hand the benefits of energy management and how a deep retrofit of an old building can provide a comfortable and healthy work environment for staff.

Sirus Ireland
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

CMC House

Unit 4, Eastgate Way
Eastgate, Little Island

+353 21 435 1090

Let’s talk about your project!