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| Brand | Model | arrow_downward Rated Nominal Capacity (litres) - New Zealand Product | Rated Hot Water Delivery (litres) - Australian Product | Rated/Declared Heat Loss (kWh/24hr) | Regulator | Availability | Expiry Date | Registration Number |
| RHEEM | 491400R7 | 410 | - | 2.70 | New Zealand Regulator | Unavailable | 11 Dec 2118 | ZHW0278 |
| RHEEM | 492400R7 | 410 | - | 2.70 | New Zealand Regulator | Unavailable | 11 Dec 2118 | ZHW0278 |
| RHEEM | 491400R8 | 410 | - | 2.70 | New Zealand Regulator | Unavailable | 11 Dec 2118 | ZHW0278 |
| RHEEM | 492400R8 | 410 | - | 2.70 | New Zealand Regulator | Unavailable | 11 Dec 2118 | ZHW0278 |
| RHEEM | 49X400XX | 410 | - | 2.70 | New Zealand Regulator | Unavailable | 11 Dec 2118 | ZHW0278 |
| VULCAN | 661400 | 410 | 400 | 3.07 | Australian Regulator | Available | 18 Aug 2025 | AHW0461 |
| VULCAN | 662400 | 410 | 400 | 3.27 | Australian Regulator | Available | 19 Oct 2025 | AHW0469 |
| RHEEM | 51141007 | 410 | - | 2.85 | New Zealand Regulator | Available | 15 Dec 2120 | ZHW0311 |
| Vulcan Duomax | 6D1400Rx | 400 | 400 | 3.13 | Australian Regulator | Available | 3 Aug 2026 | AHW0526 |
| Vulcan Duomax | 6D1400Rx/BL | 400 | 400 | 3.13 | Australian Regulator | Available | 3 Aug 2026 | AHW0526 |
| Vulcan Duomax | Vulcan Duomax 400L series | 400 | 400 | 3.13 | Australian Regulator | Available | 3 Aug 2026 | AHW0526 |
| Rheem Optima | 491400Rx | 400 | 400 | 3.13 | Australian Regulator | Available | 1 Apr 2028 | AHW0606 |
| Rheem Optima | Rheem 400L Optima Electric Storage 491400Rx | 400 | 400 | 3.13 | Australian Regulator | Available | 1 Apr 2028 | AHW0606 |
| Rheem Optima | 491400Rx/B | 400 | 400 | 3.13 | Australian Regulator | Available | 1 Apr 2028 | AHW0606 |
| Rheem Optima | 492400Rx | 400 | 400 | 3.33 | Australian Regulator | Available | 1 Apr 2028 | AHW0608 |
| Rheem Optima | Rheem 400L TE Optima Electric Storage 492400Rx | 400 | 400 | 3.33 | Australian Regulator | Available | 1 Apr 2028 | AHW0608 |
| Rheem Optima | 492400Rx/B | 400 | 400 | 3.33 | Australian Regulator | Available | 1 Apr 2028 | AHW0608 |
| AquaMax | 992400Rx | 400 | 400 | 3.33 | Australian Regulator | Available | 2 Apr 2028 | AHW0610 |
| AquaMax | AquaMax 400L TE Electric Storage 992400Rx | 400 | 400 | 3.33 | Australian Regulator | Available | 2 Apr 2028 | AHW0610 |
| AquaMax | 992400Rx/BL | 400 | 400 | 3.33 | Australian Regulator | Available | 2 Apr 2028 | AHW0610 |
- [*] "N/A" results are from models registered under the old Determination/Regulation, yet comply with the new Determination/Regulation's Minimum Energy Performance Standard