The Silver 16 central air conditioner unit offers single-stage cooling and up to 17.00 SEER, available in 1.5, 2, 3-, 4-, and 5-ton models. This unit's design features an all-aluminum Spine Fin coil, and a single-stage Duration compressor, making it a durable and. The Gold 824 connected control includes both built-in Nexia Bridge and Nexia Remote Climate