Australian price guide · 2026
How much does gas hot water system install
cost in Australia?
Supply and install gas continuous-flow or storage hot water unit, gas fitting, certification.
Typical total (AU)$2,140–$3,350
What's in a typical quote
| Line item | Typical range |
|---|---|
| Rinnai/Bosch continuous-flow 26L/min unit | $1,400–$2,200 |
| Install + gas fitting | $680–$1,050 |
| Gas compliance certificate | $60–$100 |
What affects the price
- Continuous-flow vs storage
- Flow rate (16 vs 26 L/min)
- Existing gas line suitability
- Flue extension required
How to get the most accurate price
Prices vary a lot by region, access, and job specifics. For a real quote, get 2–3 licensed plumbers to assess the job — most reputable tradies quote for free. GST (10%) is added on top of the ranges shown.
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