Wilson Heat Pumps 250L (WHPS-250A)
Rebates up to
$1,490
STC $640 · VEEC $850 (VIC) · ESC $840 (NSW)
Replace-electric, medium household, best zone. Enter your postcode below for exact figures.
VIC Solar Homes rebate
$1,400
50% of installed price, point-of-sale — locally-made tier. Stacks with STC/VEEC above.
VIC only. Assumed eligible, not confirmed against the live Solar Victoria product list.
AS/NZS 4234 energy savings
81%
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 | R290 |
| Tank volume | 250 L |
| Tank material | Stainless steel |
| Rated heating capacity | 5.02 kW |
| Rated power input | 1.11 kW |
| COP | 4.52 (20 deg C/15 deg C DB/WB ambient, water 15-55 deg C (4.20 kW / COP 3.62 at 7 deg C/6 deg C ambient)) |
| Sound level | 39 dB(A) |
| Hot water delivery | 63 °C |
| Operating ambient | -25 to 45 °C |
| Tank height | 1711 mm |
| Tank diameter | 620 mm |
| Heat pump weight | 60 kg |
| Tank weight (empty) | 63 kg |
| Warranty | Tank 10, heat pump 6 |
Certified to
Specs from: Wilson Heat Pumps AQUALUX Series brochure (Oct 2025); wilsonhotwater.com.au; australianhotwater.com.au; ABCB WaterMark certificate register; public STC / 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)
| Zone 1 | 13 STCs | $520 |
| Zone 2 | 12 STCs | $480 |
| Sydney (Z3) | 15 STCs | $600 |
| Melbourne (Z4) | 16 STCs | $640 |
| Canberra (Z5) | 16 STCs | $640 |
VEU — VEECs (Victoria)
| Zone | Repl. electric metro / regional | Repl. gas | Energy savings |
|---|---|---|---|
| Melbourne (Z4) | 9 / 10 | 8 | 80.9% |
| Canberra (Z5) | 9 / 9 | 8 | 79.5% |
ESS — ESCs (NSW)
| Zone | Repl. electric metro / regional | Repl. gas metro / regional | Energy savings |
|---|---|---|---|
| Sydney (Z3) | 27 / 27 | 12 / 12 | 72.5% |
| Canberra (Z5) | 27 / 28 | 12 / 12 | 68.3% |
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 Wilson Heat Pumps WHPS-250A is a split-system heat pump water heater: the same outdoor R290 heat pump unit used across the Aqualux range (model WHP-00315A) circulates water through its own plate heat exchanger to a 250 L stainless steel storage tank. The heat pump delivers 5.02 kW of heating with a COP of 4.52 at 20 deg C/15 deg C ambient (falling to 4.20 kW / COP 3.62 at 7 deg C/6 deg C), and is rated to operate from -25 to 45 deg C.
Sound pressure is 39 dB(A) at 1 metre, helped by a Mitsubishi inverter compressor, DC fan motor and compressor float mounting. Hot water is delivered up to 63 degrees C. The stainless-steel tank is manufactured in Australia and carries a 10-year tank warranty (6 years on the heat pump).
Wilson Hot Water has manufactured hot water systems in Melbourne for over 90 years; the Aqualux series is its current heat pump range, WaterMark certified and eligible for STCs across all Australian zones.
Registered model codes
WHPS-250A
Homeowners
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