Rheem 180L (551D180)
Rebates up to
$1,480
STC $640 · VEEC $765 (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
80%
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 | Integral all-in-one |
| Refrigerant | R513a |
| Tank volume | 180 L |
| COP | 4.5 (19 degrees C) |
| Operating ambient | -7 to 43 °C |
| Electric backup | 2.4 kW |
| Warranty | Cylinder 7, cylinder labour 3, sealed system 3, other parts 1 |
Specs from: Rheem AU product page (rheem.com.au); 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) | 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 / 9 | 8 | 80.2% |
| Canberra (Z5) | 9 / 9 | 7 | 78.9% |
ESS — ESCs (NSW)
| Zone | Repl. electric metro / regional | Repl. gas metro / regional | Energy savings |
|---|---|---|---|
| Sydney (Z3) | 26 / 27 | 12 / 12 | 71.6% |
| Canberra (Z5) | 27 / 28 | 12 / 12 | 68.4% |
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 Rheem AmbiPower MDc-180 is an all-in-one heat pump water heater with a 180 L tank and R513a refrigerant (GWP 631), with a declared COP of 4.5 at 19 degrees C. Ambient operating range is -7 to 43 degrees C.
The base 551D180 carries a 2.4 kW hardwired electric backup element; a 1.4 kW plug-and-lead variant is also sold (551D180C3P) but does not appear as a distinct register code. Warranty is 7 years on the cylinder, 3 years cylinder labour, 3 years on the sealed system (supply and labour), and 1 year on other parts.
Rated heating capacity, sound level, and dimensions are not published on the product page and are not included here.
Registered model codes
551D180
Homeowners
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