A dream that you are in a room with an air conditioner that is turned on may simply be a sign of your physical state – you may be feeling cold.
You may have such a dream if you have a fever and are experiencing chills.
A dream about an air conditioner can also be a wish fulfillment dream if you are too warm – whether this is because you are feverish or just because the temperature is too high.
Dreaming that you are in an air conditioned room can be a message that you need to cool down – you are being too emotional about an issue