Improving Energy Efficiency While Saving Precious Real Estate and Reducing Operational Costs: How Wastewater Heat Recovery Helped Toronto Western Hospital Achieve All Three

University Health Network’s (UHN) Toronto Western Hospital (TWH) is decarbonizing and improving the energy efficiency of its HVAC system by implementing Noventa Energy’s Wastewater Energy Transfer™ (WET™) system. Located in a dense urban environment, TWH has limited space and capital to work with. The WET™ system recovers heat or rejects heat into wastewater, using heat pumps, and equipment specifically designed to transfer heat with wastewater efficiently. The WET™ system has allowed TWH to save precious real estate – rather than having to expand its central heating and cooling plant, the WET™ system has allowed TWH to allocate that space for future expansion of the hospital. The system also avoids the need to replace the hospital’s existing indoor HVAC equipment, allowing for implementation with existing air handling units and avoiding costly and disruptive indoor work. As a project that is on track to be the world’s largest raw wastewater energy system, TWH’s WET™ system allows for energy efficiency, decarbonization and operational savings through its Energy-as-a-Service model.