New Zealand · costs in NZD
Reverse cycle split system air conditioner, wall hung
LG AH18S2U / AH18S2N Heat Pump
LG AH18S2U / AH18S2N is a 5 kW reverse cycle split system heat pump registered for sale in New Zealand under the trans-Tasman E3 energy rating scheme (registration AAC9441).
- Energy rating (cooling)
- 5
- Heating: 2
- Annual electricity use
- 2,327 kWh
- 209 cooling + 2,118 heating
- Estimated running cost
- $768 / year
- $64 / month · $7,679 over 10 years
- Capacity
- 5 kW cooling
- 6 kW heating
8% more electricity than the median of 236 comparable 5 kW reverse cycle split system registrations (2,154 kWh a year) in the cold zone. Uses less than 22% of them.
Across all 3,611 air conditioner registrations sold in Australia, it uses less than 71% (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 AH18S2U running cost by climate zone
| Climate zone | kWh / year | Per year | 10 years |
|---|---|---|---|
| Cold zone | 2,327 | $768 | $7,679 |
| Mixed zone | 1,101 | $363 | $3,633 |
| Hot zone | 1,100 | $363 | $3,630 |
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 5 kW, at least 3% lower annual kWh in the cold zone.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Daikin RXM46AVMA / FTXM46AVMA4.7 kW heating4.6 kW cooling1,543 kWh/yr | 4.5 | $509 | |
| Daikin RXM46WVMA / FTXM46WVMA4.7 kW heating4.6 kW cooling1,571 kWh/yr | 4.5 | $518 | |
| Gree GWH15AGDXD-K6DNA1A/O / GWH15AGDXD-K6DNA1A/I4.7 kW heating4.6 kW cooling1,835 kWh/yr | 4 | $606 | |
| Gree GWH15QDXE-K6DNA1A/O / GWH15QDXE-K6DNA1A/I4.7 kW heating4.6 kW cooling1,839 kWh/yr | 3 | $607 | |
| Midea MFCA50VA-W/MFCA50VA-N5.2 kW heating5.2 kW cooling1,841 kWh/yr | 4.5 | $608 |
Heat pumps similar to the LG AH18S2U
Technically comparable registrations: same configuration and type, capacity within 12%.
| Model | Stars | Est. cost / yr | Compare |
|---|---|---|---|
| Actron Air WRC-050CS / WRE-050CS5 kW heating5 kW cooling1,936 kWh/yr | 5 | $639 | |
| Daikin RXM50AVMA / FTXM50AVMA6 kW heating5 kW cooling1,881 kWh/yr | 5.5 | $621 | |
| Panasonic CU-HZ50DKR / CS-HZ50DKR6 kW heating5 kW cooling1,940 kWh/yr | 5.5 | $640 | |
| Haier 1U50PFHRA / AS50PFHRA5.3 kW heating5 kW cooling1,973 kWh/yr | 4 | $651 | |
| Hisense HAWG18KR5.3 kW heating5 kW cooling1,993 kWh/yr | 4 | $658 | |
| Pioneer International HPR-18A25.1 kW heating5 kW cooling1,968 kWh/yr | 4 | $649 | |
| Kaden KS185.1 kW heating5 kW cooling2,008 kWh/yr | 3.5 | $663 | |
| Daikin RXM50WVMA / FTXM50WVMA6 kW heating5 kW cooling1,903 kWh/yr | 5 | $628 |
Compare AH18S2U / AH18S2N with another model
LG AH18S2U specifications
- Type
- Reverse cycle
- Configuration
- Split system
- Air distribution
- Non-ducted
- Indoor unit
- Wall hung
- Rated cooling capacity (35 °C)
- 5.00 kW
- Cooling power input
- 1.26 kW
- Rated heating capacity (7 °C)
- 6.00 kW
- Heating power input
- 1.56 kW
- EER, full load (tested)
- 4.14
- COP, full load (tested)
- 4.06
- Rated AEER
- 3.96
- Rated ACOP
- 3.84
- Standby power (PIA)
- 1.0 W
- Compressor
- Variable speed, Inverter
- Refrigerant
- R32
- Power supply
- Single phase
- Indoor sound power
- 62 dB(A)
- Outdoor sound power
- 60 dB(A)
- Demand response (AS/NZS 4755)
- Yes (mode 1 on off, mode 2 50 percent, mode 3 75 percent)
- Dimensions (W×H×D)
- 837 × 308 × 189 mm
- Country of manufacture
- China
Dimensions are not collected for registrations under the 2019 Determination, so they are shown only where the source has them.
LG AH18S2U 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 | – | – | 251 | 662 |
| Coldresidential | residential | 5.0 | 2.0 | 209 | 2,118 |
| Mixedcommercial | commercial | – | – | 428 | 336 |
| Mixedresidential | residential | 4.5 | 2.5 | 334 | 767 |
| Hotcommercial | commercial | – | – | 1,160 | 67 |
| Hotresidential | residential | 5.0 | 3.0 | 993 | 107 |
Part-load test points (21 values)
- c__t1_min_cap_power_rated
- 220 W
- h__h2_ext_cap_power_rated
- 2100 W
- c__t1_half_cap_power_rated
- 500 W
- c__t1_have_min_cap_results
- Yes
- h__h1_half_cap_power_rated
- 570 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
- 5520 W
- h__h1_half_cap_heat_cap_rated
- 3000 W
- h__h2_is_capable_extended_load
- Yes
- c__low_temp_min_cap_power_rated
- 140 W
- c__t1_min_cap_cooling_cap_rated
- 1150 W
- c__low_temp_half_cap_power_rated
- 350 W
- c__t1_half_cap_cooling_cap_rated
- 2500 W
- c__low_temp_have_half_cap_results
- Yes
- c__low_temp_min_cap_cooling_cap_rated
- 1200 W
- c__low_temp_half_cap_cooling_cap_rated
- 2565 W
New Zealand E3 registration details
- Registration number
- AAC9441
- GEMS registration id
- 172312
- Status
- approved, available (self-reported)
- Registration expires
- 17 September 2030
- 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: 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.