Please note that this is not an air conditioner and will require a flow of air like an open window and/or door in the room to work effectively The Honeywell CL48PM is a powerful evaporative air cooler and is the perfect choice to keep indoor and semi-outdoor environments comfortably cool and breezy. This air cooler comes with a easy to operate control panel and a 48 litre water tank. It also has a built-in overflow protection system allow long periods of unattended operation, making it perfect for more demanding applications.