According to Vastu Shastra AC duct and electrical items suitable place is South East ( Agni Kona). If it is not at proper place than it is harmful for the house owner. The South West Zone is a zone of pruthwi ( earth ) AC Duck is thatwa of fire ( Agni ). If this item is at South West than gives bad result. You should transfer at the South East corner. If it is also not possible than a red colour bulb should be fix at South East corner and a water tap should be fix at South West corner.