Hello blondie68, thanks for sharing your concerns. How big is the room that you're trying to cool? I recommend lowering the temperature to a colder setting and turn the fan on a higher speed. You may also find that closing the door to the are that you're cooling may help with the cooling performance. I hope this helps! Please feel free to reconnect with us should you have any other questions. Courtney

Chicago773, thank you for sharing your room air conditioner experience with us. I am glad to hear how thrilled you are with how well it is cooling for you. Getting used to the sounds from a new appliance can be frustrating. It is normal to hear ‘high pitch chatter’ a sound of rushing air, gurgle/hiss, pinging or swishing and vibration. These are all normal. For more information of normal sounds during operation, please refer to page 4 in your Owner’s Manual. Verify that the original installation procedures have been followed properly. Pay special attention to any gaskets. If improperly installed, even a high quality, low-noise unit can rattle mercilessly. If you have any questions, please do not hesitate to reconnect with us directly by calling Mon-Fri, 8a-8p or Saturday 9a-6p EST @ 877-435-3287 for assistance. We are here for you. Your friendly Frigidaire lady, Ruth