Common causes include an undersized system, a failed heating element (electric units), sediment build-up in the tank, a thermostat set too low, or a faulty tempering valve or dip tube.
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Frequently Asked Questions
How do I get more hot water without replacing my system?
Check the thermostat setting (should be 60°C for storage units). A plumber can replace a failed element and flush sediment from the tank, which often restores full capacity.
When should I replace my hot water system instead of repairing it?
Systems older than 8-10 years with repeated faults are generally more economical to replace. A plumber can advise whether repair or replacement is the better investment.
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