The Powerful Ozone friendly (R417A) KCA28P Portable Air Conditioner has a 28000 BTU cooling capacity and is able to cool an area of upto 150 sq metres. This air conditioner comes with an standard 2.5 metre exhaust pipe but you can be extended this upto 25 metres (extra pipe sold separately) for locations not near window or external walls. It\'s easy to empty water container with auto cut off and has caster wheels for easy movement from room to room making it a very versatile unit.