No, you're just forcing your expensive AC to run longer and run less efficiently. On the flip side, if you get a unit that's too big it'll cycle on and off too

No, you're just forcing your expensive AC to run longer and run less efficiently. On the flip side, if you get a unit that's too big it'll cycle on and off too frequently - shortening the lifespan. You should get a correct sized unit for your house and space. The AC unit will last longer and use the least amount of energy. If you live somewhere that humidity is an issue - in some places that's in the winter (when you wouldn't use cooling AC) - get a whole house dehumidifier system. Ex: https://www.sylvane.com/whole-house-dehumidifiers.html https://www.sylvane.com/whole-house-dehumidifiers.html -- Those will run and maintain the correct humidity regardless of AC. Use the right tool for the right and you'll get the most efficient results.