Dear xifu..
Living room + dining room 15 X 25 X 9 feet height.. I know it need 2.0 hp.. But usage is average 3 to 4 hours a day.. For 2 couple.. Air con will install in living room and blow at very close range at sofa.. Dear xifu.. I definitely will felt cold.. And not concern that the whole living room must be cold.. Now.. the bigger the hp.. The more the electric it will consume.. So.. Can I save more electric by install 1.5 hp.. And blow for 3 to 4 hours.. Or 2hp that consume more electric.. And blow on and off for 3 to 4 hours?? Dear xifu.. Please advise..