Added to the WeatherExpert™ Series of commercial rooftop units are 6 to 23-ton sizes. They are designed to maintain product familiarity by taking advantage of common parts from existing Carrier rooftop designs and were designed in collaboration with customers. The 6 to 23-ton units are available with three stages of capacity control utilizing scroll compressors and electronically commutated motor (ECM) outdoor fan motors. The indoor fan motor is controlled by the Staged Air Volume (SAV™) system to precisely match fan operation to the staging compressors. The units are available in gas/electric, electric/electric, or cooling only, and offered with a range of factory options, such as energy-efficient air economizers, smoke detectors, and much more. WeatherExpert units feature Puron® refrigerant (R-410A), provide easy access for routine maintenance, are supported by the company’s eDesign Suite, and integrate with its i-Vu® system controls. According to the manufacturer, the units offer IEER ratings up to 21.0, exceeding the Consortium of Energy Efficiency (CEE) tier II performance criteria, which many utilities use for rebates. The system also meets or exceeds all current ASHRAE 90.1-2010 and Energy Star® energy requirements, with some models exceeding standards by more than 84 percent.