I have never seen a single positive review from a legitimate experience, even not considering price. To me it seems like a toy or best suited for a small doghouse. There are several other choices in this BTU range that suggest applications like use in a tent while camping, or outdoors at a picnic. You have to have poop for brains to think that would work.ZERO BREEZE Battery Operated Portable Air Conditioner
ZERO BREEZE Air Conditioner can work with power supplied through a standard adapter. It can be used as a home air conditioner, also it can work as a car air conditioner, a Tent air conditioner through connecting with a power source or portable power source with 24V, 10A power supplied.www.zerobreeze.com
If they ever come down in price the mk2 pulls 10a of 24vdc and is suitable for something like a teardrop if it's well insulated and/or used at night.
Price is pretty nuts though tbh.
I just finished putting a GE portable AC in my Honda Odyssey minivan, the one lowes sells for $300, 7100/5000 BTU. Running it off a generator for now, have lifepo4 and solar in the works. I went so far as converting it to dual hose operation and insulating the exhaust hose with semi rigid duct.
I tested it a few hours on a semi warm day, it does work and lowers the temp in the dark grey van. On a real hot day sitting in the sun Im sure Im gonna kick my own ass for pursuing a boondoggle. Both hoses vent out a wooden panel behind the driver in the sliding door, well sealed so the vans AC still works while driving.