Thanks for stopping by to share your feedback with us, Ruby! For optimal performance, selecting the correct sized air conditioner for the room’s square footage is essential for efficient cooling, and larger is not always better. If you have the correct size for your room, and the air conditioner does not feel cool to your liking, you want to ensure that the filter is cleaned. You also want to ensure that the front of the air conditioner is not blocked by drapes, blinds, furniture, etc. As this can restrict air distribution. If the information provided does not resolve your cooling concerns, please call us at 1-800-374-4432 Monday-Friday 8:30 am-8 pm EST. -Ciara