Isotherm Engineering Ltd

Founded in 1975, Isotherm Engineering Ltd. has evolved from a design-build mechanical contractor into one of Canada’s leading building commissioning and performance engineering providers. With nearly five decades of technical excellence, we’ve been pioneers in shaping the practice of Building Commissioning (Cx) in Canada since the early 1990s. Today, Isotherm continues to set the standard for quality, integration, and reliability across a broad range of building systems and sectors. Our expertise spans: • Building Commissioning (Cx) – Fundamental, Enhanced, Existing Building, and Envelope Commissioning • Integrated Systems Testing (IST) and Smoke Management Testing (SMT) • Energy Audits, Energy Modeling, and Measurement & Verification (M&V) • Mechanical & Electrical Engineering Design and Project Management • Forensic Investigation & Troubleshooting of complex electromechanical and BAS systems As Certified Commissioning Professionals (CCP) and active contributors to the Building Commissioning Association (BCxA), our team has helped develop and promote best practices and standards that define the industry today. At Isotherm, our mission is simple: Deliver performance, reliability, and peace of mind — ensuring every system we commission performs exactly as intended.