to generate heat in a room
>buy a $20 wall heater
>plug it into the outlet
>push the button

to generate coolness in a room
>buy a massive $300 AC unit that can only be mounted to a window by screws and insulation foam
>turn the dial
>starts blowing out your eardrums with how loud as fuck it is
>thousands of stinkbugs climb into your room through the cracks in between the window and the air conditioner since window frames aren't perfect rectangles

How the hell haven't they invented an air conditioner that doesn't require a window at all? I never hear about heaters having to "remove" the cold air from a room, but ACs need to remove hot air? bullshit