Efficient Large Air Conditioner

Question: What are the advantages and disadvantages of having an oversized Air Conditioning unit? I was told that they aren't very efficient.

An "oversized" air conditioner will cool your house quicker, but it will use more electricity and will not remove humidity adequately. If your ductwork is not big enough for the "oversized" air conditioner, the coil may freeze and then the air conditioner won't work at all. Obviously the air conditioner must be big enough to cool the house, but too big is just as bad. We recommend the proper size to cool your home to 75 degrees when it is 95 degrees outside, then increase the size slightly, if needed, based on your temperature preferences.

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