Name: Mitsubishi Heavy Industries SRC42ZTA-WB/SRK42ZTA-WFT
Brand: Mitsubishi Heavy Industries
SKU: AAC10042

Climate zone

Electricity pricec/kWh

Energy rating (cooling): 4; Heating: 3
Annual electricity use: 932 kWh; 295 cooling + 637 heating
Estimated running cost: $298 / year; $25 / month · $2,982 over 10 years
Capacity: 4.2 kW cooling; 5.4 kW heating

32% more electricity than the median of 196 comparable 3.5 kW reverse cycle split system registrations (709 kWh a year) in the mixed zone. Uses less than 6% of them.

Across all 3,680 air conditioner registrations sold in Australia, it uses less than 79% (this compares very different sizes, so the cohort figure above is the useful one).

coolingheatingClick a zone to use it across the page.

Annual kWh is the government label figure for a residential user in the mixed zone (Richmond NSW climate: Sydney, Melbourne, Adelaide, Perth). Mixed climate zone shown by default (Sydney, Melbourne, Adelaide, Perth); switch to cold or hot. Cost = kWh × 32c/kWh in AUD; change the price above to your tariff.

Mitsubishi Heavy Industries SRC42ZTA-WB running cost by climate zone

Climate zone	kWh / year	Per month	Per year	5 years	10 years
Cold zone (Canberra, Hobart, Ballarat, alpine areas)	1,950	$52	$624	$3,120	$6,240
Mixed zone (Sydney, Melbourne, Adelaide, Perth)	932	$25	$298	$1,491	$2,982
Hot zone (Brisbane, Darwin, Cairns, Townsville)	951	$25	$304	$1,522	$3,043

At 32c/kWh. Formula: cost = annual kWh × price. The kWh figure is the label’s residential estimate for that zone; commercial-profile figures are in the specifications.

Air conditioners that use less electricity

Same configuration and type, cooling capacity within 12% of 4.2 kW, at least 3% lower annual kWh in the mixed zone.

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Hisense HAWU12KR3.9 kW heating3.7 kW cooling649 kWh/yr	3.7 kW	3.9 kW	5.5	649	$208	83% of similar
Hisense HAWH12KR3.9 kW heating3.7 kW cooling691 kWh/yr	3.7 kW	3.9 kW	4.5	691	$221	64% of similar
Daikin RXM46AVMA / FTXM46AVMA4.7 kW heating4.6 kW cooling839 kWh/yr	4.6 kW	4.7 kW	4	839	$268	100% of similar
Daikin RXM46WVMA / FTXM46WVMA4.7 kW heating4.6 kW cooling847 kWh/yr	4.6 kW	4.7 kW	4	847	$271	99% of similar
Toshiba RAS-13U2AVSG-NZ / RAS-13U2FVG-NZ4.2 kW heating4 kW cooling878 kWh/yr	4 kW	4.2 kW	3.5	878	$281	8% of similar

Air conditioners similar to the Mitsubishi Heavy Industries SRC42ZTA-WB

Technically comparable registrations: same configuration and type, capacity within 12%.

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Panasonic CU-Z42DKR / CS-Z42DKRW5 kW heating4.2 kW cooling960 kWh/yr	4.2 kW	5 kW	3.5	960	$307	6% of similar
Toshiba RAS-16E2AVG-A/RAS-16E2KV2G-A5.4 kW heating4.2 kW cooling1,127 kWh/yr	4.2 kW	5.4 kW	2.5	1,127	$361	1% of similar
Mitsubishi Electric MUZ-AP42VG2/MSZ-AP42VG2 Series5.4 kW heating4.2 kW cooling995 kWh/yr	4.2 kW	5.4 kW	4	995	$318	4% of similar
Mitsubishi Electric MUZ-AP42VGD2/MSZ-AP42VGD25.4 kW heating4.2 kW cooling995 kWh/yr	4.2 kW	5.4 kW	4	995	$318	4% of similar
Fujitsu AOTH14KNCA/ASTH14KNCA4.7 kW heating4.2 kW cooling899 kWh/yr	4.2 kW	4.7 kW	3.5	899	$288	8% of similar
Panasonic CU-RZ42DKR / CS-RZ42DKRW5 kW heating4.2 kW cooling960 kWh/yr	4.2 kW	5 kW	3.5	960	$307	6% of similar
Toshiba RAS-16ZAVSG-A / RAS-16ZKVSG-A5.4 kW heating4.2 kW cooling992 kWh/yr	4.2 kW	5.4 kW	3.5	992	$317	5% of similar
Fujitsu AOTG14KVCA/AGTG14KVCA5.2 kW heating4.2 kW cooling1,005 kWh/yr	4.2 kW	5.2 kW	4	1,005	$322	4% of similar

Compare SRC42ZTA-WB/SRK42ZTA-WFT with another model

Mitsubishi Heavy Industries SRC42ZTA-WB specifications

Type: Reverse cycle
Configuration: Split system
Air distribution: Non-ducted
Indoor unit: Wall hung
Rated cooling capacity (35 °C): 4.20 kW
Cooling power input: 1.03 kW
Rated heating capacity (7 °C): 5.40 kW
Heating power input: 1.33 kW
EER, full load (tested): 4.14
COP, full load (tested): 4.09
Rated AEER: 4.05
Rated ACOP: 4.04
Standby power (PIA): 1.9 W
Compressor: Variable speed, Inverter
Refrigerant: R32
Power supply: Single phase
Indoor sound power: 59 dB(A)
Outdoor sound power: 61 dB(A)
Demand response (AS/NZS 4755): Yes
Country of manufacture: Thailand

Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.

Mitsubishi Heavy Industries SRC42ZTA-WB zoned energy rating figures

As published for each climate zone. Residential figures drive the star ratings; commercial figures assume a commercial usage pattern.

Zone	Profile	Cooling stars	Heating stars	Cooling kWh	Heating kWh	TCSPF	HSPF
Coldcommercial	commercial	–	–	357	550	8.51	4.36
Coldresidential	residential	4.5	2.5	184	1,766	6.27	4.00
Mixedcommercial	commercial	–	–	477	279	7.52	4.92
Mixedresidential	residential	4.0	3.0	295	637	5.90	4.64
Hotcommercial	commercial	–	–	1,106	57	7.10	5.33
Hotresidential	residential	4.5	3.5	861	90	6.36	5.31

Part-load test points (18 values)

h__h2_ext_cap_power_rated: 1490 W
c__t1_half_cap_power_rated: 345 W
c__t1_have_min_cap_results: No
h__h1_half_cap_power_rated: 465 W
h__h1_have_min_cap_results: No
h__h3_have_ext_cap_results: No
h__h2_have_full_cap_results: No
h__h2_have_half_cap_results: No
h__h3_have_full_cap_results: No
h__h3_have_half_cap_results: No
h__h2_ext_cap_heat_cap_rated: 4700 W
h__h1_half_cap_heat_cap_rated: 2700 W
h__h2_is_capable_extended_load: Yes
c__low_temp_half_cap_power_rated: 285 W
c__low_temp_have_min_cap_results: No
c__t1_half_cap_cooling_cap_rated: 2100 W
c__low_temp_have_half_cap_results: Yes
c__low_temp_half_cap_cooling_cap_rated: 2260 W

Other model numbers on registration AAC10042

Registered together and sharing the same test results. Usually variants of the same unit.

Australian GEMS registration details

Registration number: AAC10042
GEMS registration id: 177936
Status: approved, available (self-reported)
Registration expires: 7 April 2031
Registered for sale in: Australia, New Zealand
Family: SRC42ZTA-W* / SRK42ZTA-WF*
Regulatory standard: [SEER Non Multi-Split <=65kW] GEMS (Air Conditioners up to 65kW) Determination 2019
Test standard: AS/NZS 3823.1.1:2012
MEPS: 2019
Product class: Class 9

Source: Australian Government Energy Rating (GEMS) registration data, DCCEEW via data.gov.au (CC BY 3.0 AU). Dataset published 25 September 2026; last checked 26 September 2026. Manufacturer: mhiaa.com.au. How the derived figures are calculated.