Will a larger air conditioner be more effective for cooling my home?

Actually, you don’t want an air conditioner that’s too large for the space that it needs to cool. Although technically, it will cool your home more quickly, this isn’t beneficial. It will cool your home too fast, so it will turn itself on and off too frequently. Because of the rapid cycling, it won’t circulate enough air over the indoor coils that allow moisture from the air to accumulate, preventing them from drying quickly enough. This extra moisture creates a haven for mold, mildew, and bacteria. Rapid cycling also uses more energy. Talk to your local HVAC company about how to calculate the right sized air conditioner for your home.