Hello. My name is Marc. I live in the U.S. and my girlfriend is building a house in Davao. I am trying to help her decide on the size of an air conditioner for a 14 by 12 foot room. It maybe even 20 feet long, sometimes it is hard to understand her. In America we go by BTU's, a 10000 btu would be ok for this size room, maybe even an 8000. But in the Philippines I noticed they never heard of btu's and I think they measure the size in kilowatts maybe? Anyway, any help will be appreciated.