Welcome to OPUS Mechanical Services Ltd.! We are a full service Mechanical Contractor specializing in Plumbing, Sheet Metal, ... Ventilation, Air Conditioning & Refrigeration skilled trade offerings in the Industrial, Commercial & Institutional markets. We continually strive to be the "preferred choice" for the elite General Contractors and Building Owners/Managers in the Greater Toronto Area with a permanent focus on quality & service. Founded in 2017 by Blair McDonnell & Scott Munro; the company has put together a team consisting of the "best of the best" to ensure their vision is realized. To get a better understanding of what OPUS Mechanical is all about, please visit our website below! read more