Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cools and extracts

This is a good fan. It can be changed manually to either blow in cool air, or to extract hot air. We use it in two bedrooms and our workroom which all are small to medium sized rooms. You will have to place it stratgically to get a good ventilation between the rooms. It fits well in our windows (the window fits into slots on the fan that prevents it from falling out of the window), comes with an extension that covers the whole window opening and is not noisy. It can be used with the 'insect screen' on the window still in place. This brings good relief during hot summer evenings. We've been using this product for the past year and just purchased another one.