Guys, a quick question.

Planning to buy an air conditioner for my room (3mx4m) so I think 1.0HP will suffice. Currently looking at Panasonic CSS10MKH (Panasonic Website My main reason of getting air conditioner is because I live near a busy road and I just couldn't handle the amount of dust that gets into my room even when I already installed a mosquito netting (the seller claims it's good enough for dust as well).

So the questions is, how much should I expect to pay for the USAGE of this aircond if I turn it on around 16 hours a day? I will probably set the temperature around 25C.

Thanks in advance for anyone that help me.