Case Study: MacDonald Miller Facility Solutions achieves 25% energy savings with Trane’s all-electric HVAC system

MacDonald Miller Facility Solutions cuts energy use 25% with Trane Commercial

MacDonald Miller Facility Solutions, a mechanical partner on a major Seattle mixed-use development, faced the challenge of meeting the city's rigorous Living Building Challenge sustainability standards. They turned to Trane Commercial to design and implement a first-of-its-kind, fully-electric HVAC system for the project, aiming to go beyond compliance and set a new precedent for sustainable construction.

Trane implemented an innovative integrated system using an ACX air source heat pump and an RTWD heat recovery chiller. This solution eliminated fossil fuel use and achieved a 25% reduction in energy use, while also helping the project gain two additional floors of rentable space through performance incentives. The project became Trane's first Living Building Petal Certified project in the region, validating the approach and establishing a new regional standard for high-performance buildings.

MacDonald Miller Facility Solutions