How long does a hot water cylinder install take? Comments Off on How long does a hot water cylinder install take? 18 Jan 2016 Vote Up 0 Vote Down Answered Public Public Private Installations Anonymous asked January 18, 2016 Hi There, How long does a hot water cylinder install take? 1 answer Vote Up 0 Vote Down Public ⋅ January 20, 2016 A typical install takes around 4 hours. #1 Please login or Register to Submit Answer