what is portable ac unit

Garrison 10,000 BTU Portable Air Conditioner features on/off 24 hour real timerAuto-swing louvers to enable multi-dimensional air flowLCD multi-functional remote control10,000 BTUsDanby 6000 BTU Portable Air Conditioner 6,000 BTU 3-in-1 portable air conditioner Dehumidifier mode with direct drain feature controls humidity in small living spaces Automatic on/off: Have the unit start or stop to meet your schedule Built-in handles and castors allow you to move the unit from room to room easily Fits easily in sliding glass doors, slider and double hung windows Exhaust hose length: 57 8/16" (146 cm) Variable temperature control from 17ºC - 30ºC (62ºF - 86ºF) 12 months parts and labour coverage with carry-in service. Installation and/or yearly maintenance (cleaning) are not covered under warranty. Why does the pan fill up so quickly when I have it on heat mode? What does automatic mode mean? Where do I drain the water from? When do I use the air exhaust hose?