Isotherm Engineering Ltd. was founded in 1975 as a Design-Build contractor specializing in mechanical engineering services, including heating ventilation and air conditioning, precision environmental controls and refrigeration. We have grown into much more. We now specialise in many areas of service such as: engineering project management, measurement and verification (M&V), energy audit, energy modeling, specialty process design and troubleshooting, forensic work in electromechanical or building automation system (BAS) failures, and commissioning complex multi-disciplinary building systems.