Viessmann 200L (Vitocal 161-A 200 OS)
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Rebates up to
$1,410
STC $600 · 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
79%
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 | R290 |
| Tank volume | 200 L |
| Rated heating capacity | 2.78 kW |
| Rated power input | 0.685 kW |
| COP | 4.15 (A 20/15, W 15-55) |
| Sound level | 46 dB(A) |
| Operating ambient | -7 to 43 °C |
| Tank height | 1518 mm |
| Tank diameter | 620 mm |
| Tank weight (empty) | 120 kg |
| Electric backup | 1.8 kW |
Specs from: Viessmann AU Vitocal 161-A brochure (viessmann.com.au); public 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 | 12 STCs | $480 |
| Sydney (Z3) | 14 STCs | $560 |
| Melbourne (Z4) | 15 STCs | $600 |
| Canberra (Z5) | 15 STCs | $600 |
VEU — VEECs (Victoria)
| Zone | Repl. electric metro / regional | Repl. gas | Energy savings |
|---|---|---|---|
| Melbourne (Z4) | 9 / 9 | 7 | 78.8% |
| Canberra (Z5) | 8 / 9 | 7 | 77.1% |
ESS — ESCs (NSW)
| Zone | Repl. electric metro / regional | Repl. gas metro / regional | Energy savings |
|---|---|---|---|
| Sydney (Z3) | 26 / 27 | 11 / 11 | 70.4% |
| Canberra (Z5) | 27 / 27 | 11 / 11 | 66.6% |
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 Vitocal 161-A 200 OS is an all-in-one heat pump water heater: an R290 heat pump module built into the same cabinet as a 200 L DHW cylinder, standing 1518 mm high and 620 mm in diameter, sized for up to 4 people. It draws heat from ambient air and rejects it via a condenser wrapped around the outside of the tank.
At the A 20/15, W 15-55 rating point the unit delivers 2.78 kW heating output for 0.685 kW power input, a COP of 4.15. Sound level is 46 dB(A), and a 1.8 kW electric element is built in as backup. Ambient operating range is -7 to 43 degrees C, and net unit weight is 120 kg.
Viessmann’s AU brochure lists this model as the “Vitocal 161A 200OS”; the VEU/ESS register carries it as “Vitocal 161-A 210 SO”. EnergyAE has not been able to confirm whether the register’s “210” reflects a different rated/actual fill volume to the 200 L nominal figure Viessmann publishes, or a register data-entry variant of the same 200 L product; given the matching tank diameter, weight, and unique position as the smaller of only two tank sizes in this model line, this is treated as the same physical product.
Registered model codes
Vitocal 161-A 210 SO
Homeowners
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