Hydrotherm Fusion 320L (FUSION/X8)
Rebates up to
$1,570
STC $720 · VEEC $850 (VIC)
Replace-electric, medium household, best zone. Enter your postcode below for exact figures.
VIC Solar Homes rebate
$1,000
50% of installed price, point-of-sale. Stacks with STC/VEEC above.
VIC only. Assumed eligible, not confirmed against the live Solar Victoria product list.
AS/NZS 4234 energy savings
83%
vs the standard's reference electric storage water heater, medium household, best zone.
Register data as at CER (STC) 2026-04-30 · VEU 2026-07-18
Specifications
| Type | Integral all-in-one |
| Refrigerant | R290 |
| Tank volume | 320 L |
| Tank material | Carbon steel, 2.5mm sheet, X-class enamel coating |
| COP | 5 (Annual COP as published in retailer product listings) |
| Sound level | 48 dB(A) |
| Tank height | 2150 mm |
| Tank diameter | 650 mm |
| Electric backup | 1.6 kW |
| Warranty | 6 (full system replacement: tank, electronics, refrigeration) |
Specs from: GoGetAHeatPump and Same Day Hot Water Service retailer product listings for Hydrotherm FUSION/X8 (official Hydrotherm spec sheet PDF not publicly located); 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 | 14 STCs | $560 |
| Zone 2 | 13 STCs | $520 |
| Sydney (Z3) | 16 STCs | $640 |
| Melbourne (Z4) | 18 STCs | $720 |
| Canberra (Z5) | 18 STCs | $720 |
VEU — VEECs (Victoria)
| Zone | Repl. electric metro / regional | Repl. gas | Energy savings |
|---|---|---|---|
| Melbourne (Z4) | 10 / 10 | 9 | 83.2% |
| Canberra (Z5) | 9 / 10 | 8 | 82.0% |
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 Hydrotherm Fusion X8 is an integral, all-in-one heat pump water heater built around AC-to-DC inverter drive technology, with a 320 L tank in carbon steel, X-class enamel-coated construction. The outdoor cabinet is 650 mm wide and 2150 mm high, weighs 146 kg, and uses R290 natural refrigerant. Published annual COP is 5.00, with a maximum tank temperature of 70 degrees C and a sound rating of 48 dB(A).
A 1.6 kW electric element provides backup heating, and the unit runs on a 220-240 V, 15 amp single-phase supply. Hydrotherm backs the Fusion X8 with a 6-year full system replacement warranty covering the tank, electronics and refrigeration circuit.
No spec sheet is hosted on Hydrotherm’s own site for this model; the figures above are drawn from two independent AU retailer product listings that agree on tank volume, refrigerant, dimensions and warranty. The register also lists FUSION/X4 and FUSION/X6 under Hydrotherm, but no public retailer or manufacturer data could be found for those smaller variants, so they are not covered here.
Registered model codes
FUSION/X8
Homeowners
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