Thermann 315L (THP45x315)
Rebates up to
$680
STC $680
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.
Register data as at CER (STC) 2026-04-30
Specifications
| Type | Standalone split |
| Refrigerant | CO2 (R744) |
| Tank volume | 315 L |
| Rated heating capacity | 4.5 kW |
| Rated power input | 0.95 kW |
| COP | 5.08 (as quoted on manufacturer product page; specific test condition not stated) |
| Sound level | 38 dB(A) |
| Heat pump weight | 48 kg |
| Warranty | Tank 10, heat pump system 6, parts and labour 2 (domestic) |
Specs from: Thermann Split Heat Pump product page (thermann.com.au/products/split-heat-pump); 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 | 13 STCs | $520 |
| Sydney (Z3) | 15 STCs | $600 |
| Melbourne (Z4) | 17 STCs | $680 |
| Canberra (Z5) | 17 STCs | $680 |
VEU — VEECs (Victoria)
Not yet registered for VEECs.
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 Thermann THP45x315 is a split-system heat pump water heater: a CO2 (R744) heat pump unit paired with a 315 L storage tank. The heat pump delivers 4.5 kW of heating from a 0.95 kW power input and runs at 38 dBA, with a manufacturer-quoted COP around 5.08.
The same heat pump unit (48 kg) is used across Thermann’s split range and paired with 160, 250, 315 and 400 L tanks; this entry covers the 315 L option, also registered under the STC-specific code THP-CO2-315GL-SHP. R744 is a natural refrigerant with a GWP of 1.
Warranty is 6 years on the heat pump system, 10 years on the tank, and 2 years parts and labour for domestic installations. Dimensions, tank weight and rated delivery temperature were not stated on the manufacturer’s public product page and are omitted rather than guessed.
Registered model codes
THP45x315, THP-CO2-315GL-SHP
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