Climate zone

Electricity pricec/kWh

Energy rating (cooling): 4.5; Heating: 2.5
Annual electricity use: 1,316 kWh; 410 cooling + 906 heating
Estimated running cost: $421 / year; $35 / month · $4,211 over 10 years
Capacity: 6.1 kW cooling; 7 kW heating

2% less electricity than the median of 104 comparable 6 kW reverse cycle split system registrations (1,340 kWh a year) in the mixed zone. Uses less than 62% of them.

Across all 3,681 air conditioner registrations sold in Australia, it uses less than 68% (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.

LG WH21SLU-23 running cost by climate zone

Climate zone	kWh / year	Per month	Per year	5 years	10 years
Cold zone (Canberra, Hobart, Ballarat, alpine areas)	2,741	$73	$877	$4,386	$8,771
Mixed zone (Sydney, Melbourne, Adelaide, Perth)	1,316	$35	$421	$2,106	$4,211
Hot zone (Brisbane, Darwin, Cairns, Townsville)	1,358	$36	$435	$2,173	$4,346

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 6.1 kW, at least 3% lower annual kWh in the mixed zone.

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Panasonic U-60PZ4R5 / S-6071PU3E6 kW heating6 kW cooling1,092 kWh/yr	6 kW	6 kW	3.5	1,092	$349	99% of similar
Panasonic U-60PZ3R5 / S-6071PU3E6 kW heating6 kW cooling1,101 kWh/yr	6 kW	6 kW	3.5	1,101	$352	98% of similar
Rinnai HONRPX60/HINRPX60M6.5 kW heating6 kW cooling1,177 kWh/yr	6 kW	6.5 kW	4.5	1,177	$377	96% of similar
Midea MFEZ60VA-W/MFEZ60VA-N6.5 kW heating6 kW cooling1,177 kWh/yr	6 kW	6.5 kW	4.5	1,177	$377	96% of similar
Actron Air WRC-060DS / WRE-060DS6.6 kW heating6 kW cooling1,203 kWh/yr	6 kW	6.6 kW	4.5	1,203	$385	94% of similar

Air conditioners similar to the LG WH21SLU-23

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

Model	Cooling	Heating	Stars	kWh / yr	Est. cost / yr	Uses less than
Comfee CASG-XG60/CASN-XG606.4 kW heating6.1 kW cooling1,264 kWh/yr	6.1 kW	6.4 kW	4	1,264	$404	86% of similar
Midea MFXP60W/MFXP60N6.6 kW heating6.1 kW cooling1,282 kWh/yr	6.1 kW	6.6 kW	4	1,282	$410	83% of similar
Mitsubishi Electric MUZ-LN60VGD/MSZ-LN60VGDR6.8 kW heating6.1 kW cooling1,418 kWh/yr	6.1 kW	6.8 kW	3	1,418	$454	32% of similar
Mitsubishi Heavy Industries SRC60ZSXA-W / SRK60ZSXA-W6.8 kW heating6.1 kW cooling1,334 kWh/yr	6.1 kW	6.8 kW	3	1,334	$427	57% of similar
Mitsubishi Heavy Industries SRC60ZSXA-W/SRK60ZSXA-WF6.8 kW heating6.1 kW cooling1,337 kWh/yr	6.1 kW	6.8 kW	3	1,337	$428	55% of similar
Mitsubishi Electric MUZ-LN60VGD/MSZ-LN60VGDB6.8 kW heating6.1 kW cooling1,418 kWh/yr	6.1 kW	6.8 kW	3	1,418	$454	32% of similar
Carrier Carrier Ambi6.5 kW heating6.1 kW cooling1,340 kWh/yr	6.1 kW	6.5 kW	3.5	1,340	$429	46% of similar
Midea MFEF60VA-W/MFEF60VA-N6.5 kW heating6.1 kW cooling1,340 kWh/yr	6.1 kW	6.5 kW	3.5	1,340	$429	46% of similar

Compare WH21SLU-23 / WH21SLN-23 with another model

LG WH21SLU-23 specifications

Type: Reverse cycle
Configuration: Split system
Air distribution: Non-ducted
Indoor unit: Wall hung
Rated cooling capacity (35 °C): 6.10 kW
Cooling power input: 1.52 kW
Rated heating capacity (7 °C): 7.00 kW
Heating power input: 1.64 kW
EER, full load (tested): 4.13
COP, full load (tested): 4.46
Rated AEER: 4.01
Rated ACOP: 4.26
Standby power (PIA): 0.7 W
Compressor: Variable speed, Inverter
Refrigerant: R32
Power supply: Single phase
Indoor sound power: 65.2 dB(A)
Outdoor sound power: 59.2 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.

LG WH21SLU-23 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	–	–	727	794	6.12	3.89
Coldresidential	residential	5.0	2.0	258	2,483	6.60	3.68
Mixedcommercial	commercial	–	–	1,663	407	3.16	4.32
Mixedresidential	residential	4.5	2.5	410	906	6.26	4.21
Hotcommercial	commercial	–	–	2,032	82	5.63	4.53
Hotresidential	residential	5.0	3.0	1,227	131	6.51	4.54

Part-load test points (23 values)

c__t1_min_cap_power_rated: 500 W
h__h2_ext_cap_power_rated: 2700 W
c__t1_half_cap_power_rated: 565 W
c__t1_have_min_cap_results: Yes
h__h1_half_cap_power_rated: 720 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: 6650 W
h__h1_half_cap_heat_cap_rated: 3550 W
h__h2_is_capable_extended_load: Yes
c__low_temp_min_cap_power_rated: 274 W
c__t1_min_cap_cooling_cap_rated: 2800 W
c__low_temp_full_cap_power_rated: 1389.28 W
c__low_temp_half_cap_power_rated: 461 W
c__t1_half_cap_cooling_cap_rated: 3050 W
c__low_temp_have_half_cap_results: Yes
c__low_temp_min_cap_cooling_cap_rated: 1900 W
c__low_temp_full_cap_cooling_cap_rated: 6569.7 W
c__low_temp_half_cap_cooling_cap_rated: 3285 W

Australian GEMS registration details

Registration number: AAC7654
GEMS registration id: 155122
Status: approved, available (self-reported)
Registration expires: 29 July 2028
Registered for sale in: Australia, New Zealand
Family: –
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 19 September 2026; last checked 20 September 2026. How the derived figures are calculated.