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| Brand | Model | Rated Nominal Capacity (litres) - New Zealand Product | Rated Hot Water Delivery (litres) - Australian Product | arrow_downward Rated/Declared Heat Loss (kWh/24hr) | Regulator | Availability | Expiry Date | Registration Number |
| Rheem Optima | 492315Rx | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0603 |
| Rheem Optima | Rheem 315L TE Optima Electric Storage 492315Rx | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0603 |
| Rheem Optima | 492315Rx/B | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0603 |
| AquaMax | 992315Rx | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0604 |
| AquaMax | AquaMax 315L TE Electric Storage 992315Rx | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0604 |
| AquaMax | 992315Rx/B | 315 | 315 | 3.12 | Australian Regulator | Available | 26 Mar 2028 | AHW0604 |
| EVERHOT | 282315Vx | 326 | 315 | 3.12 | Australian Regulator | Available | 14 Aug 2028 | AHW0641 |
| VULCAN | 682315Vx | 326 | 315 | 3.12 | Australian Regulator | Available | 13 Aug 2028 | AHW0639 |
| AquaMax | 982315Vx | 326 | 315 | 3.12 | Australian Regulator | Available | 14 Aug 2028 | AHW0642 |
| VULCAN | 661400 | 410 | 400 | 3.07 | Australian Regulator | Available | 18 Aug 2025 | AHW0461 |
| RINNAI | 400S | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | FM400S24 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | FM400S48 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | FM400S36 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | HFE400S48 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | HFE400S36 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| RINNAI | HFE400S24 | 424 | 400 | 3.07 | Australian Regulator | Available | 21 Feb 2027 | AHW0554 |
| VULCAN | 662315 | 325 | 315 | 3.06 | Australian Regulator | Available | 16 Mar 2026 | AHW0489 |
| RHEEM | 4A2315M7 | 315 | 315 | 3.06 | Australian Regulator | Available | 7 Feb 2028 | AHW0597 |
| RHEEM | 4A2315M8 | 315 | 315 | 3.06 | Australian Regulator | Available | 7 Feb 2028 | AHW0597 |
- [*] "N/A" results are from models registered under the old Determination/Regulation, yet comply with the new Determination/Regulation's Minimum Energy Performance Standard