Penalties For Oversizing Air Conditioning

Be aware that a large air conditioner will not provide the best cooling. Buying an oversized air conditioner penalizes you in the following ways.

It costs more to buy a larger air conditioner than you need.
The larger-than-necessary air conditioner cycles on and off more frequently, reducing its efficiency. Frequent cycling makes indoor temperatures fluctuate more and results in a less comfortable environment. Frequent cycling also inhibits moisture removal. In Southwest Florida, removing moisture is essential for acceptable comfort. In addition, this cycling wears out the compressor and electrical parts more rapidly.
A larger air conditioner uses more electricity.

Bottom Line-Higher Electric & Repair Bills & Less Comfort