As long as you can keep the evaporator above the evaporation temperature of your compressed refrigerant, you’re golden.
Also keeping the evaporator from getting covered in ice where it doesn’t work. Yeah you can defrost but in certain weather it’s just going to ice up immediately.
No, the Fire TV Stick is a streaming stick. The Fire TV is a TV with the stick built in and it makes you go through the Amazon Fire UI to do normal TV things as well.