Complete with every Pumpsdirect2u ET Portable Air Conditioner is an exhaust hose which is 1.5 metres long. To make this exhaust hose longer you can purchase an additional exhaust hose which is also 1.5 metres long and by connecting the 2 together you can have an exhaust hose length of 3 metres. Please note that there is no connector which connects the 2 hoses together and we recommend the usage of clear / white gaffa tape in order to tape the 2 hoses together.