Hot water heating costs NZ households $500–$1,200 per year depending on system type, household size, and usage habits. A standard electric cylinder costs $700–$1,000/year for a family of four. Switching to a heat pump system reduces this to $200–$350/year.
| System Type | Est. Annual Cost |
|---|---|
| Standard electric cylinder | $700–$1,000 |
| Gas continuous flow | $500–$800 |
| Heat pump hot water | $200–$350 |
| Solar hot water | $100–$200 (backup only) |