Hydrotherm Dynamic 268L (DYNAMIC/X8)
Rebates up to
$1,450
STC $640 · VEEC $765 (VIC) · ESC $810 (NSW)
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
77%
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 | 268 L |
| Tank material | Vitreous enamel |
| Rated heating capacity | 3.6 kW |
| Rated power input | 0.88 kW |
| COP | 4.2 (Annual COP; heat pump duty ranges from 2.50 COP at 0 degrees C wet bulb to 5.65 COP at 25 degrees C wet bulb) |
| Sound level | 42 dB(A) |
| Hot water delivery | 60 °C |
| Operating ambient | -5 to 45 °C |
| Tank height | 1810 mm |
| Tank diameter | 620 mm |
| Electric backup | 1.8 kW |
| Warranty | 6 (full system replacement) |
Certified to
Specs from: Hydrotherm official product/technical pages (hydrothermhotwatersystems.com.au); Aquatech Solar Technologies DYNAMIC/X8 specification sheet (shared manufacturer platform); 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 | 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) | 8 / 9 | 7 | 77.4% |
| Canberra (Z5) | 8 / 8 | 7 | 75.6% |
ESS — ESCs (NSW)
| Zone | Repl. electric metro / regional | Repl. gas metro / regional | Energy savings |
|---|---|---|---|
| Sydney (Z3) | 26 / 27 | 12 / 11 | 70.9% |
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 Dynamic X8 is an integral heat pump water heater: a rotary compressor and micro-channel condenser combined with a 268 L vitreous-enamel tank in a single outdoor cabinet, 620 mm wide and 1810 mm high, weighing 118 kg. The unit uses R290 (propane) refrigerant and operates across an ambient range of -5 to 45 degrees C. Rated heating capacity is 3.6 kW at a rated power input of 0.88 kW, with an annual COP of 4.20 (ranging from 2.50 at 0 degrees C wet bulb up to 5.65 at 25 degrees C).
Standard mode heats to 60 degrees C, with Eco, Hybrid, Hybrid+ and Element modes available up to a 70 degrees C maximum tank temperature; a 1.8 kW electric element provides standby backup heating under fault conditions. Sound rating is 42 dB(A) at 1.65 m. Hydrotherm backs the Dynamic X8 with a 6-year full system replacement warranty.
Hydrotherm is a rebrand of the same platform manufactured by Aquatech Solar Technologies, so certified-standards and detailed performance figures above are drawn from Aquatech’s published DYNAMIC/X8 specification sheet as well as Hydrotherm’s own site. The register also lists Dynamic-SS/X8/C and Dynamic-SS/X8/OP variants; no separate public data confirms whether these use a stainless-steel tank or only differ in factory heating-mode presets, but the same heat pump platform and register performance are expected to apply.
Registered model codes
DYNAMIC/X8, Dynamic_X8, Dynamic-SS/X8/C, Dynamic-SS/X8/OP
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