Blair McDonnell , Director

Blair was previously the President and Founder of the very successful Delta Mechanical, which was acquired by The Plan Group, in 2008. After 9 years with The Plan Group as Vice President of Mechanical, Blair decided it was time to branch out once again and go back to his roots. Blair prides himself on stellar customer service, job satisfaction, professionalism and a wealth of experience. As Director at OPUS, Blair’s key roles include business development, and oversight of the project management and estimating teams as well as general operations.

Scott Munro , Director

Scott is an industry executive with over 20 years of management experience in mechanical contracting. Most specifically; in the areas of full-service commercial retrofit, facility services, HVAC/R emergency service & preventative maintenance. Originally joining Adelt Mechanical as an apprentice, he grew into a Project Management role where eventually initiating the development of the "Facility Services Division" which targeted an elite clientele that required a dedicated & diversified team to meet the challenges that type of work entails. Adelt became one of the most respected in the industry. He took controlling interest as CEO of Adelt Mechanical in 2005 and continued on as CEO of COFELY ADELT following the sale to COFELY Services in 2012. Scott is an energetic leader with a core focus on building relationships. His driven leadership style, combined with his skills, has made him successful in starting up, developing and managing business models in the past.


From direct competitors to business partners, Scott and Blair’s vision for OPUS Mechanical Services is to become the preferred choice for the key General Contractors, Building Owners and end user Clients in the Greater Toronto Area.

OPUS Mechanical was established on the basis of these three words:
People · Passion · Performance™

We have developed a culture through unity and partnership, which creates a collaborative environment that encourages input from all.
Committed to exceeding project objectives and client expectations, the OPUS Mechanical team has dedicated its efforts to be the relationship contractor of choice.

Sarah MacLellan, Project Manager

Rob Wakefield, Project Manager

Saul Aginsky, Project Manager

Dave Morrison, Project Manager

Scott Nicholls, Project Manager

Andrew Coote, Project Coordinator

Trevor McLean, Service Manager

Melissa Pullin, Service Coordinator

Ozzy Duman, Electrical Estimator

Marino Anastasopoulos, HVAC Supervisor

Scott Peeters, Sheet Metal Supervisor

Jon Carter, Plumbing Supervisor

Alfredo Sergi, Shop Operations

Chris Contini, Estimating Manager

Drew Beaton, Sheet Metal Estimator

Tyler Culbertson, Piping Estimator

Sylvia Guo, Mechanical Estimator

Krista Chan, Estimating Coordinator

Jeff Webster, Director of Finance and Administration

Dana Erhardt, Finance & Administration Associate