Originally Posted by
Shreder
Well,
Aircon blows hot air from the back, cold from front.
If u duct the hot air out the window, attic, wherever, then ur aircon will only use that much energy to cool your room.
If you keep the hot air inside the room, ur aircon front side will still blow cold air and will probably drop the temprature significantly where its facing, but it wont be efficient as hot air will constantly be blowing out the other side of the aircon, mixing with the cold air, so its a constant battle.
Example:
Normally if ur room is 25c, and u want it to be 20c, u let the aircon work 30 mins then thermostat activated once reached the temprature and it will now work half as hard to keep that temprature.... It will really draw 50% less from the wall (tested mine, pretty sure they all work the same and its an old one)
Now if the hot air is always mixing up.. it will work nonstop full power... N maybe its not so good for the air con as well mate..
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