This window unit won best overall compared to all of the other window and portable units we tested because of its ease of use, efficiency, and quiet operation. Best of all, LG includes insulation for keeping cold air in and warm air out—a notorious drawback of most window units. ...
It's important to note that the cooling area ratings provided are estimates and may vary depending on factors such as room layout, insulation, and ambient temperature. To ensure optimal cooling performance, it is recommended that you choose an air conditioner suitable for the size of the room ...