New Zealand · costs in NZD
Reverse cycle fixed air conditioner
Midea MULMI0618B Heat Pump
Midea MULMI0618B is a 18 kW reverse cycle fixed heat pump registered for sale in New Zealand under the trans-Tasman E3 energy rating scheme (registration AAC8243).
- Energy rating (cooling)
- 3.5
- Heating: 2
- Annual electricity use
- 8,090 kWh
- 890 cooling + 7,200 heating
- Estimated running cost
- $2,670 / year
- $222 / month · $26,697 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 3,612 air conditioner registrations sold in Australia, it uses less than 18% (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 cold zone (Canberra climate: Canberra, Hobart, Ballarat, alpine areas). All of New Zealand is the cold zone on the Zoned Energy Rating Label. Cost = kWh × 33c/kWh in NZD; 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 | $2,670 | $26,697 |
| Mixed zone | 4,020 | $1,327 | $13,266 |
| Hot zone | 4,470 | $1,475 | $14,751 |
At 33c/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.
Heat pumps that use less electricity
Same configuration and type, cooling capacity within 12% of 18 kW, at least 3% lower annual kWh in the cold zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Smart User SM4OU-D200MK20 kW heating18 kW cooling7,630 kWh/yr | 3 | $2,518 |
Heat pumps 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 cooling8,044 kWh/yr | 3.5 | $2,655 | |
| Kaden KM6020 kW heating17.5 kW cooling7,964 kWh/yr | 3.5 | $2,628 | |
| Smart User SM4OU-D200MK20 kW heating18 kW cooling7,630 kWh/yr | 3 | $2,518 | |
| Carrier 38QUM190D8S621.5 kW heating19 kW cooling8,459 kWh/yr | 4 | $2,791 |
Other Midea models of similar capacity
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Midea MULMI0619C21.5 kW heating19 kW cooling8,459 kWh/yr | 4 | $2,791 | |
| Midea MULMI0617B21.5 kW heating19 kW cooling8,459 kWh/yr | 4 | $2,791 |
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
New Zealand E3 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: E3 programme registration data (EECA, New Zealand) (trans-Tasman E3 registration data published by DCCEEW on data.gov.au, CC BY 3.0 AU). Dataset published 19 September 2026; last checked 20 September 2026. How the derived figures are calculated.