Your coffin comfortable, is it?

You're talking to someone who has an apartment that gets sun all day long. In the late afternoon, the sun beats the windows, and with the blinds closed and blackout curtains, it still gets warm. Add to it that I'm on the second floor so the heat from the apartment below me rises up to me.
Because of this, my A/C runs nearly 24/7 to keep it at comfortable temperature. During a heatwave, the A/C can maybe get the apartment to 78F during the heat of the late afternoon.
From September through May, my electric bill monthly is maybe $50.00 - $65.00 a month.
Last summer, due to the heat waves, my electric bill (for a 1 bedroom apt) was $405.00 a month.