Australia · costs in AUD
Reverse cycle fixed air conditioner
Midea MULMI0618B Air Conditioner
Midea MULMI0618B is a 18 kW reverse cycle fixed air conditioner registered under Australia’s Energy Rating (GEMS) scheme (registration AAC8243).
- Energy rating (cooling)
- 3.5
- Heating: 2.5
- Annual electricity use
- 4,020 kWh
- 1,418 cooling + 2,602 heating
- Estimated running cost
- $1,286 / year
- $107 / month · $12,864 over 10 years
- Capacity
- 18 kW cooling
- 20.5 kW heating
Only 4 comparable registrations in this cohort, so no percentile is shown.
Across all 3,680 air conditioner registrations sold in Australia, it uses less than 23% (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.
Midea MULMI0618B running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 8,090 | $2,589 | $25,888 |
| Mixed zone | 4,020 | $1,286 | $12,864 |
| Hot zone | 4,470 | $1,430 | $14,304 |
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 similar to the Midea MULMI0618B
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Spt AM180C-620.7 kW heating18 kW cooling3,956 kWh/yr | 3.5 | $1,266 | |
| Kaden KM6020 kW heating17.5 kW cooling3,977 kWh/yr | 3 | $1,273 | |
| Smart User SM4OU-D200MK20 kW heating18 kW cooling3,969 kWh/yr | 3 | $1,270 | |
| Carrier 38QUM190D8S621.5 kW heating19 kW cooling4,127 kWh/yr | 3.5 | $1,321 |
Other Midea models of similar capacity
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Midea MULMI0619C21.5 kW heating19 kW cooling4,127 kWh/yr | 3.5 | $1,321 | |
| Midea MULMI0619B21.5 kW heating19 kW cooling4,127 kWh/yr | 3.5 | $1,321 |
Compare MULMI0618B with another model
Midea MULMI0618B specifications
- Type
- Reverse cycle
- Configuration
- Fixed
- Air distribution
- Non-ducted
- Indoor unit
- –
- Rated cooling capacity (35 °C)
- 18.00 kW
- Cooling power input
- 5.10 kW
- Rated heating capacity (7 °C)
- 20.50 kW
- Heating power input
- 5.00 kW
- EER, full load (tested)
- 3.33
- COP, full load (tested)
- 3.81
- Rated AEER
- 3.48
- Rated ACOP
- 4.04
- Standby power (PIA)
- 21.0 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Single phase
- Indoor sound power
- –
- Outdoor sound power
- 70.6 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.
Midea MULMI0618B 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 | – | – | 1,537 | 2,231 |
| Coldresidential | residential | 3.5 | 2.0 | 890 | 7,200 |
| Mixedcommercial | commercial | – | – | 2,109 | 1,137 |
| Mixedresidential | residential | 3.5 | 2.5 | 1,418 | 2,602 |
| Hotcommercial | commercial | – | – | 5,096 | 254 |
| Hotresidential | residential | 4.0 | 3.5 | 4,078 | 392 |
Part-load test points (23 values)
- c__t1_min_cap_power_rated
- 840 W
- h__h1_min_cap_power_rated
- 1000 W
- h__h2_ext_cap_power_rated
- 6690 W
- c__t1_half_cap_power_rated
- 1600 W
- c__t1_have_min_cap_results
- Yes
- h__h1_half_cap_power_rated
- 1950 W
- h__h1_have_min_cap_results
- Yes
- 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__h1_min_cap_heat_cap_rated
- 5200 W
- h__h2_ext_cap_heat_cap_rated
- 18000 W
- h__h1_half_cap_heat_cap_rated
- 10000 W
- h__h2_is_capable_extended_load
- Yes
- c__low_temp_min_cap_power_rated
- 680 W
- c__t1_min_cap_cooling_cap_rated
- 5000 W
- c__low_temp_half_cap_power_rated
- 1200 W
- c__t1_half_cap_cooling_cap_rated
- 9000 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_min_cap_cooling_cap_rated
- 5600 W
- c__low_temp_half_cap_cooling_cap_rated
- 8750 W
Australian GEMS registration details
- Registration number
- AAC8243
- GEMS registration id
- 161509
- Status
- approved, available (self-reported)
- Registration expires
- 16 May 2029
- Registered for sale in
- Australia, Fiji, New Zealand
- Family
- –
- Regulatory standard
- [SEER Multi-Split <=65kW] GEMS (Air Conditioners up to 65kW) Determination 2019
- Test standard
- AS/NZS 3823.1.4:2012
- MEPS
- 2019
- Product class
- Class 20
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.