New Zealand · costs in NZD
Reverse cycle split system air conditioner, wall hung
LG WH12SKU-18 / WH12SKN-18 Heat Pump
LG WH12SKU-18 / WH12SKN-18 is a 3.5 kW reverse cycle split system heat pump registered for sale in New Zealand under the trans-Tasman E3 energy rating scheme (registration AAC7533).
- Energy rating (cooling)
- 4.5
- Heating: 2.5
- Annual electricity use
- 1,452 kWh
- 151 cooling + 1,301 heating
- Estimated running cost
- $479 / year
- $40 / month · $4,792 over 10 years
- Capacity
- 3.5 kW cooling
- 4 kW heating
4% more electricity than the median of 187 comparable 3.5 kW reverse cycle split system registrations (1,395 kWh a year) in the cold zone. Uses less than 42% of them.
Across all 3,611 air conditioner registrations sold in Australia, it uses less than 81% (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.
LG WH12SKU-18 running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 1,452 | $479 | $4,792 |
| Mixed zone | 728 | $240 | $2,402 |
| Hot zone | 775 | $256 | $2,558 |
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 3.5 kW, at least 3% lower annual kWh in the cold zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Midea MFCA35VA-W/MFCA35VA-N3.6 kW heating3.5 kW cooling1,144 kWh/yr | 5.5 | $378 | |
| Daikin RXM35AVMA / FTXM35AVMA3.7 kW heating3.5 kW cooling1,146 kWh/yr | 5.5 | $378 | |
| Midea MFEP35VA-W/MFEP35VA-N3.6 kW heating3.5 kW cooling1,183 kWh/yr | 6 | $390 | |
| Daikin RXV35AVMA / FTXV35AVMA3.7 kW heating3.5 kW cooling1,207 kWh/yr | 5 | $398 | |
| Hitachi RAC-VJ35PHAT/RAK-VJ35PHAT3.8 kW heating3.5 kW cooling1,209 kWh/yr | 5 | $399 |
Heat pumps similar to the LG WH12SKU-18
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Mitsubishi Electric MUZ-AP35VG2/MSZ-AP35VGKD23.7 kW heating3.5 kW cooling1,219 kWh/yr | 5 | $402 | |
| Mitsubishi Electric MUZ-AP35VGD2/MSZ-AP35VGKD23.7 kW heating3.5 kW cooling1,219 kWh/yr | 5 | $402 | |
| Rinnai HONRPX35/HINRPX35M3.8 kW heating3.5 kW cooling1,217 kWh/yr | 6 | $402 | |
| Daikin RXV35AVMA / FTXV35AVMA3.7 kW heating3.5 kW cooling1,207 kWh/yr | 5 | $398 | |
| Midea MFEZ35VA-W/MFEZ35VA-N3.8 kW heating3.5 kW cooling1,217 kWh/yr | 6 | $402 | |
| Daikin RXM35AVMA / FTXM35AVMA3.7 kW heating3.5 kW cooling1,146 kWh/yr | 5.5 | $378 | |
| Midea MFEP35VA-W/MFEP35VA-N3.6 kW heating3.5 kW cooling1,183 kWh/yr | 6 | $390 | |
| Hitachi RAC-VJ35PHAT/RAK-VJ35PHAT3.8 kW heating3.5 kW cooling1,209 kWh/yr | 5 | $399 |
Compare WH12SKU-18 / WH12SKN-18 with another model
LG WH12SKU-18 specifications
- Type
- Reverse cycle
- Configuration
- Split system
- Air distribution
- Non-ducted
- Indoor unit
- Wall hung
- Rated cooling capacity (35 °C)
- 3.50 kW
- Cooling power input
- 0.86 kW
- Rated heating capacity (7 °C)
- 4.00 kW
- Heating power input
- 0.87 kW
- EER, full load (tested)
- 4.14
- COP, full load (tested)
- 4.77
- Rated AEER
- 4.03
- Rated ACOP
- 4.55
- Standby power (PIA)
- 2.5 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Single phase
- Indoor sound power
- 65.4 dB(A)
- Outdoor sound power
- 58.7 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 WH12SKU-18 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 | – | – | -27 | 424 |
| Coldresidential | residential | 4.5 | 2.5 | 151 | 1,301 |
| Mixedcommercial | commercial | – | – | 251 | 223 |
| Mixedresidential | residential | 4.5 | 3.0 | 239 | 489 |
| Hotcommercial | commercial | – | – | 741 | 49 |
| Hotresidential | residential | 5.0 | 3.0 | 699 | 76 |
Part-load test points (23 values)
- c__t1_min_cap_power_rated
- 253 W
- h__h2_ext_cap_power_rated
- 1250 W
- c__t1_half_cap_power_rated
- 314 W
- c__t1_have_min_cap_results
- Yes
- h__h1_half_cap_power_rated
- 384 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
- 3800 W
- h__h1_half_cap_heat_cap_rated
- 2000 W
- h__h2_is_capable_extended_load
- Yes
- c__low_temp_min_cap_power_rated
- 146 W
- c__t1_min_cap_cooling_cap_rated
- 1300 W
- c__low_temp_full_cap_power_rated
- 786.0400000000001 W
- c__low_temp_half_cap_power_rated
- 251 W
- c__t1_half_cap_cooling_cap_rated
- 1750 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_min_cap_cooling_cap_rated
- 1100 W
- c__low_temp_full_cap_cooling_cap_rated
- 3769.5 W
- c__low_temp_half_cap_cooling_cap_rated
- 1873 W
New Zealand E3 registration details
- Registration number
- AAC7533
- GEMS registration id
- 154215
- Status
- approved, available (self-reported)
- Registration expires
- 30 May 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 8
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.