Portable Air conditioner unit (Old Dean GU15)

As the weather warms up.....(it will one day) I have surplus to requirements air conditioner unit. Not sure of the full details in terms of BTU etc. Was purchased from B&Q a few years ago. We used it last summer and it sill works and cools the room down. It can also be used a dehumidifier. Note it is heavy bit of kit and the size of suitcase. It is on wheels. As it's a spare I am fed up moving it out the way each time I go into the garage.