Every mains pressure hot water system when purchased has a manufacturers date on a compliance plate usually located towards the bottom of the heater
. Generally if you get anymore than 10 years out of a heater you have had extremely good luck. Coast Plumbing a Gold Coast Plumber usually replace water heaters after 10 years only if the water is discoloured. This is a sign that the hot water system is beginning to rust and that is causing the discolouration. We changed a heater just last week that was dated 1989 so they do last longer from time to time however it has a lot to do with several conditions e.g.
Location (whether it is inside or outside)
Usage (how often the system is used in the dwelling)
Water (different areas have different water)
Maintenance (whether it has the correct valves installed)
In comparison you have solar hot water systems, the initial investment which is higher than your other types of hot water system. Take into account you are buying the tank and the panels. These have to be installed onto your roof. The panels and tank are quite heavy so you have to have a few men on site to install.
In summing up if you are getting good pressure at the correct temperature and your hot water heater is not leaking and the water is clear there is no need to call a plumber. However if any of this is not happening get on the phone to Coast Plumbing straight away. We have been servicing the Gold Coast for over 25 years and only have fully qualified licensed plumbers, we specialize in hot water systems, blocked drains, leaking water, bathroom and kitchen installations.