Earthworker Energy 250L (NA41-SS250A)
Rebates up to
$1,365
STC $600 · VEEC $765 (VIC)
Replace-electric, medium household, best zone. Enter your postcode below for exact figures.
AS/NZS 4234 energy savings
78%
vs the standard's reference electric storage water heater, medium household, best zone.
Register data as at CER (STC) 2026-04-30 · VEU 2026-07-01
Specifications
| Type | Standalone split |
| Refrigerant | R32 |
| Tank volume | 250 L |
| Tank material | Stainless steel (316) |
| Rated heating capacity | 3.5 kW |
| Rated power input | 0.865 kW |
| Sound level | 51 dB(A) |
| Hot water delivery | 55 °C |
| Operating ambient | -7 to 43 °C |
| Tank height | 1620 mm |
| Tank diameter | 620 mm |
| Heat pump weight | 50 kg |
| Tank weight (empty) | 62 kg |
| Electric backup | None (heat pump only) |
| Warranty | Tank 15, refrigeration 6, electrical 5 (parts); 1 year parts and labour on all components |
Certified to
Specs from: Earthworker Energy / Neopower NA41-SS250A Installation and Operation Instructions; public CER SRES / VEU / ESS registers.
Certificate rebate by postcode
Registered certificate values
Every scheme this model is registered for, by zone. STCs at $40, VEECs at $85, ESCs at $30 (reference prices as at 2026-07-07). Claim year 2026, medium household.
SRES — STCs (national)
| CER Zone 1 | 12 STCs | $480 |
| CER Zone 2 | 12 STCs | $480 |
| CER Zone 3 | 14 STCs | $560 |
| CER Zone 4 | 15 STCs | $600 |
| CER Zone 5 | 15 STCs | $600 |
VEU — VEECs (Victoria)
| Zone | Repl. electric metro / regional | Repl. gas | Energy savings |
|---|---|---|---|
| VEU Zone 4 | 8 / 9 | 7 | 77.8% |
| VEU Zone 5 | 8 / 9 | 7 | 76.8% |
ESS — ESCs (NSW)
Not yet registered for ESCs.
Certificate counts are computed from the model's registered performance data using the current regulated equations. A lodged claim depends on the specific installation, household size, and the scheme rules in force at creation. Energy savings % is against the AS/NZS 4234:2021 reference electric storage water heater for that zone, medium household, calculated from the model's registered performance data.
The Earthworker Energy NA41-SS250A is a split-system heat pump water heater: an outdoor R32 heat pump unit (KR35/DN4-A, 770 g charge) connected by insulated 20 mm copper send-and-return water pipes to a 250 L stainless steel (316) storage tank. The heat pump delivers 3.5 kW of heating capacity at a rated power input of 865 W, and runs across an ambient range of -7 to 43 degC, with a standard outlet temperature of 55 degC and a measured sound level of 51 dB(A).
An electric booster element is available as an option but is not fitted as standard, so the base unit relies on the heat pump alone. The heat pump unit weighs 50 kg net (931 x 407 x 551 mm) and the empty tank 62 kg net (620 mm diameter, 1620 mm tall).
The manual cites AS/NZS 3500.4 and AS/NZS 3000 as applicable installation standards. Warranty is 15 years on the tank, 6 years on refrigeration, 5 years on electrical components (parts only), with 1 year parts and labour across all components. The same physical product is sold under both the Earthworker Energy and Neopower brand names, with matching register entries under each.
Registered model codes
NA41-SS250A
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