Most hot water systems last between 8–12 years for electric, 10–15 years for gas, 15–20 years for solar, and 10–15 years for heat pumps, depending on water quality, usage, and maintenance.

Common causes include an undersized system for your household, a faulty thermostat, sediment build-up in the tank, or a broken heating element in electric systems, and we can test components and recommend repair or upgrade.

Consider replacement if the unit is over 10 years old, repairs are frequent, the tank is rusty or leaking, or energy bills are rising, as replacing an old system is often more cost-effective long term.

As a general guide, 1–2 people typically need 125–160L, 3–4 people 250–315L, and 5+ people 315L+, while continuous flow systems are sized based on the number of bathrooms and fixtures used at once.

The best option depends on your household size, energy source, and budget.