Mitsubishi Electric’s City Multi L-Generation Air Source outdoor unit achieves significantly improved efficiency due to HexiCoil technology — a zinc-aluminum, flat-tube heat exchanger that maximizes heat transfer capability through its fin shape. The unit boasts a 30% smaller footprint than previous models, making the system ideal for tight mechanical spaces and up to 50% reduction in system refrigerant charge. Quiet operation and increased efficiencies across all categories make this outdoor unit ideal for projects with efficiency goals such as LEED certification or net-zero status.