Envirosun 250L (250ES1-15)
Rebates up to
$1,410
STC $600 · ESC $810 (NSW)
Replace-electric, medium household, best zone. Federal STCs plus the better of VIC (VEECs) or NSW (ESCs). Enter your postcode below for exact figures.
AS/NZS 4234 energy savings
69%
vs the standard's reference electric storage water heater, medium load, best zone.
Register data as at CER (STC) 2026-04-30
Specifications
| Type | Integral all-in-one |
| Refrigerant | R134a |
| Tank volume | 246 L |
| Rated power input | 0.495 kW |
| COP | 3.41 (AS/NZS 2712 rated COP at 15 degrees C ambient air; COP at 7 degrees C ambient air is 3.02) |
| Sound level | 46 dB(A) |
| Hot water delivery | 65 °C |
| Operating ambient | -7 to 45 °C |
| Tank height | 1987 mm |
| Tank diameter | 629 mm |
| Tank weight (empty) | 102 kg |
| Electric backup | 1.5 kW |
| Warranty | Tank cylinder 5, compressor 5 (parts); electrical element, anode, PTR valve and ECV 1 year (parts); 1 year labour on all components |
Specs from: Envirosun HP Plus Classic Owners Manual, model 250ES1-15 (rev 401, 2025), Energie Group Australia; 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)
| Zone 1 | 12 STCs | $480 |
| Zone 2 | 11 STCs | $440 |
| Sydney (Z3) | 14 STCs | $560 |
| Melbourne (Z4) | 15 STCs | $600 |
| Canberra (Z5) | 15 STCs | $600 |
VEU — VEECs (Victoria)
Not yet registered for VEECs.
ESS — ESCs (NSW)
| Zone | Repl. electric metro / regional | Repl. gas metro / regional | Energy savings (medium load) |
|---|---|---|---|
| Sydney (Z3) | 25 / 26 | 11 / 11 | 68.8% |
| Canberra (Z5) | 26 / 27 | 11 / 10 | 65.3% |
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 and load size, calculated from the model's registered performance data, or taken directly from the register where it publishes a savings figure. VEU registers this data at the small load (the step-down load for a medium-rated system) and ESS at the medium load, so the two schemes' figures differ for the same zone.
The Envirosun 250ES1-15 is an all-in-one monobloc heat pump water heater from the HP Plus Classic range: a single cabinet with an R134a (0.9 kg charge) heat pump wrapped around a 246 L tank. The heat pump draws 495 W of rated power input and delivers a COP of 3.41 at 15 degrees C ambient air, or 3.02 at 7 degrees C, per AS/NZS 2712 test conditions.
The unit operates in ambient temperatures from -7 to 45 degrees C and defaults to a 65 degrees C set point, with a temperature range of 35 to 75 degrees C available using the 1.5 kW electric element for boost or emergency heating. Sound pressure is 46 dB(A). The tank has magnesium anode corrosion protection and an IPX4 waterproof rating, with a screw compressor and micro-channel condenser and base coil design.
This model is on the STC, VEU and ESS registers under Envirosun. EnergyAE could not source public spec data for the related register codes 200ES1-15, 200ES2C-15 or 250ES2C-15, so those are not yet covered here.
Registered model codes
250ES1-15
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