With the cooling capacity of 6500 BTU’s, this unit is ideal up to 450 Cubic feet of conditioned space. This unit is available in right, left or top air discharge configurations, and is available as a cool only, electric heat or reverse cycle heat unit. We use 4″ ducting and recommend a minimum of 2, 4″ round supply grills with this installation. More is always better!  This unit is designed to run off generators that produce a minimum of 1000 running watts. . Another option is to use a properly sized Inverter with a large enough battery bank to run over night. The electric heat option generates 5,640 BTU of heat. Electric heat option is not available in 220/240 Volt configurations.