[heyheyhouhou]

I had a roommate in the US who used to leave the AC on all day because he loved coming home after 12 hours outside to a cold apartment.

[lostmsu]

In an apartment that would probably be maybe $100/month unless your electricity is very expensive. Low price to pay for comfort.

[dzhiurgis]

$100 of power in europe translates to about $200 which translates to $600 given lower incomes.

Infrared blaster is $20 and allows to control your AC/HP from anywhere using your phone.