With a cooling capacity of 12000 BTU’s this unit is ideal up to 850 cubic feet of conditioned space. This unit is available in Right, Left, or Top air discharge configurations. It is available as a “Cool Only,” Cool/Electric Heat,” or “Cool/Reverse Cycle Heat.” It is designed to run off a generator that produces 2000 running watts with an optional Soft Start. We recommend at least three discharges for this unit. One 8″ x 6″ grill should be within 6 feet of the unit and at least two other discharges need to be at least the 4″ round supply vents. As always, more is better; these are minimums. Electric heat is not available in 220 Volt configurations.