We are sorry to hear this ! Our units work best in enclosed, well insulated spaces. Room environment conditions such as ceiling height, sunlight, number of windows/ doors and level of insulation can affect cooling efficiency and there are ways to increase the capacity of these units. There could be other reasons for the unit to not cool- temperature setting could be too high, or the exhaust hose may need re-installation to avoid the heat from coming back into the room. Like any other electrical device, this portable air conditioner will create some sound when operating due to the powerful compressor working to cool the space you need it to. Our customer support team will be able to look into all your concerns and troubleshoot for you. Please call us at 1-800-474-2147, Monday - Friday 8:30 AM - 5:30 PM (EST), or send us an email at usinfo@jmatek.com with the reference code number THB0722. We look forward to making this right for you. Thank You !