The Platinum 16 SEER 3-Phase is a high-efficiency, all-electric heat pump, available in 3, 4, and 5-ton units offering up to 16.00 SEER/8.20 HSPF. The durable components are contained in one sleek cabinet—including a two-stage Duration™ compressor, all-aluminum Spine Fin™ coil, variable-speed Vortica™ blower motor with Comfort R™ mode, and demand defrost—to deliver the sustained performance you expect year after year.