Upgrade your low pressure hot water cylinder to natural gas continuous flow if the cylinder begins to leak. To replace the hot water cylinder with another of the same type and the same or similar capacity you are already looking at least half the price of a continuous flow gas hot water heater installation.
It’s worth your while in the long run plus you will get an amazing shower pressure! If you don’t have natural gas, connections onto the network are usually free including gas meter up to the first 25m inside your boundary.
It is common knowledge now that heating water with electric elements is one of the most inefficient forms of water heating available with continuous flow natural gas hot water being one of the cheapest.
Take a look at this http://www.thegashub.co.nz/For-home/Gas-hot-water/ If you are thinking about upgrading, give Sharp Plumbing Services a call. We will give you the best price in town.