Ultra-High Efficiency YORK® Predator® units are convertible single packages with a common footprint cabinet and common roof curb for all 3 through 12.5 ton models. The units are designed for light commercial applications and can be easily installed on a roof curb, slab, or frame. All Predator® units are self-contained and assembled on rigid full perimeter base rails allowing for 3-way forklift access and overhead rigging. Every unit is completely charged, wired, piped, and tested at the factory to provide a quick and easy field installation. Predator® units in all tonnage sizes are convertible between side airflow and down airflow, with corresponding economizer if you require the economizer option. Predator® units are available in the following configurations: cooling only, cooling with electric heat, and cooling with gas heat. Electric heaters are available as factory-installed options or field-installed accessories. All units meet ASHRAE 90.1 single-zone variable supply air volume standard. Featuring a variable frequency drive on 3 through 12.5 ton ZT models.