I've use this AC in my home during a hot summer day to help my central AC keep the my house cool. We kept it in the livingroom and it worked perfectly and my house stayed comfortable while my central AC didn't have to work so hard. Lately, I've been using it in my office on weekends because the landlord cranks up the AC to about 83 to conserve energy. The office is 2 rooms totaling 730 SQFT and it keeps the entire place comfortable.