Australia · costs in AUD
Reverse cycle split system air conditioner, wall hung
Maxa LZL21 ODU / LZL21 IDU Air Conditioner
Maxa LZL21 ODU / LZL21 IDU is a 2.1 kW reverse cycle split system air conditioner registered under Australia’s Energy Rating (GEMS) scheme (registration AAC9541).
- Energy rating (cooling)
- 3.5
- Heating: 3
- Annual electricity use
- 597 kWh
- 165 cooling + 432 heating
- Estimated running cost
- $191 / year
- $16 / month · $1,910 over 10 years
- Capacity
- 2.1 kW cooling
- 2.1 kW heating
42% more electricity than the median of 62 comparable 2 kW reverse cycle split system registrations (422 kWh a year) in the mixed zone. Uses less than 0% of them.
Across all 3,680 air conditioner registrations sold in Australia, it uses less than 90% (this compares very different sizes, so the cohort figure above is the useful one).
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.
Maxa LZL21 ODU running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 920 | $294 | $2,944 |
| Mixed zone | 597 | $191 | $1,910 |
| Hot zone | 673 | $215 | $2,154 |
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 2.1 kW, at least 3% lower annual kWh in the mixed zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Comfee CASG-XG20/CASN-XG202.2 kW heating2 kW cooling367 kWh/yr | 5 | $117 | |
| Midea MFAB-20WC/MFAB-20NC2.3 kW heating2 kW cooling370 kWh/yr | 5 | $118 | |
| Kaden KSI062.3 kW heating2 kW cooling370 kWh/yr | 5 | $118 | |
| Midea MFXP20W/MFXP20N2.3 kW heating2 kW cooling370 kWh/yr | 5 | $118 | |
| Carrier 38QHG020N8/42QHG020N8-12.2 kW heating2 kW cooling378 kWh/yr | 5 | $121 |
Air conditioners similar to the Maxa LZL21 ODU
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Carrier Carrier Ambi2.5 kW heating2.1 kW cooling391 kWh/yr | 5 | $125 | |
| Hyundai HYSSSAC21TC2.1 kW heating2.1 kW cooling428 kWh/yr | 3.5 | $137 | |
| Midea MFEZ20VA-W/MFEZ20VA-N2.5 kW heating2.1 kW cooling391 kWh/yr | 5 | $125 | |
| Carrier 38QUH020N8L/42QCE020N8F2.5 kW heating2.1 kW cooling391 kWh/yr | 5 | $125 | |
| Midea MFEF20VA-W/MFEF20VA-N2.5 kW heating2.1 kW cooling391 kWh/yr | 5 | $125 | |
| TCL TAC-08CHSD/TPH21ITU2.1 kW heating2.1 kW cooling428 kWh/yr | 3.5 | $137 | |
| TCL TAC-08CHSD/*ITU2.1 kW heating2.1 kW cooling428 kWh/yr | 3.5 | $137 | |
| Hyundai HYSSSAC21T*2.1 kW heating2.1 kW cooling428 kWh/yr | 3.5 | $137 |
Compare LZL21 ODU / LZL21 IDU with another model
Maxa LZL21 ODU specifications
- Type
- Reverse cycle
- Configuration
- Split system
- Air distribution
- Non-ducted
- Indoor unit
- Wall hung
- Rated cooling capacity (35 °C)
- 2.15 kW
- Cooling power input
- 0.52 kW
- Rated heating capacity (7 °C)
- 2.10 kW
- Heating power input
- 0.44 kW
- EER, full load (tested)
- 4.23
- COP, full load (tested)
- 4.85
- Rated AEER
- 4.04
- Rated ACOP
- 4.64
- Standby power (PIA)
- 3.8 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Single phase
- Indoor sound power
- 49.3 dB(A)
- Outdoor sound power
- 63.4 dB(A)
- Demand response (AS/NZS 4755)
- Yes
- Country of manufacture
- China
Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.
Maxa LZL21 ODU 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 |
|---|---|---|---|---|---|
| Coldcommercial | commercial | – | – | 168 | 391 |
| Coldresidential | residential | 3.5 | 2.5 | 107 | 813 |
| Mixedcommercial | commercial | – | – | 238 | 295 |
| Mixedresidential | residential | 3.5 | 3.0 | 165 | 432 |
| Hotcommercial | commercial | – | – | 554 | 203 |
| Hotresidential | residential | 4.5 | 3.0 | 456 | 217 |
Part-load test points (18 values)
- h__h2_ext_cap_power_rated
- 855 W
- c__t1_half_cap_power_rated
- 220 W
- c__t1_have_min_cap_results
- No
- h__h1_half_cap_power_rated
- 200 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
- 2800 W
- h__h1_half_cap_heat_cap_rated
- 1000 W
- h__h2_is_capable_extended_load
- Yes
- c__low_temp_half_cap_power_rated
- 160 W
- c__low_temp_have_min_cap_results
- No
- c__t1_half_cap_cooling_cap_rated
- 1050 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_half_cap_cooling_cap_rated
- 1150 W
Australian GEMS registration details
- Registration number
- AAC9541
- GEMS registration id
- 174074
- Status
- approved, available (self-reported)
- Registration expires
- 5 November 2030
- Registered for sale in
- Australia
- 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 8
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.