LG 5.0 kW split systems
6
models on the register
Short answer
6 LG 5.0 kW split systems are registered for sale in Australia in 2026, from 4.8 to 5 kW. Supplied and installed, most land between $2,100 to $3,300; up to three licensed local installers will quote your actual job.
Prices are estimates, not quotes (how we estimate them). Rebate rules checked September 2026.
Compare 3 quotes for my houseAt a glance
- Models6
- Installed, estimate$2,100–$3,300
- Quietest indoorsLG LS18S0N DX6ALAP57.6 dB(A), 5 kW
- Most efficient (average zone)LG AH18S2N4.5 cooling stars, 5 kW
- Reverse cycle100%heat and cool
- R32 refrigerant100%the current low-GWP standard
5.0 kW
6 models · installed $2,100–$3,300
| Model (outdoor / indoor) | Type | Cool kW | Heat kW | Cool stars | Heat stars | Indoor dB | Installed, estimate | Quote |
|---|---|---|---|---|---|---|---|---|
| AS18S1U / AS18S1N | Wall split | 4.8 | 5.2 | 3.5★ | 2.5★ | 62 | $2,100–$3,300 | Get quotes |
| WS18TWU / WS18TWN | Wall split | 4.8 | 5.9 | 3.5★ | 2★ | 63.2 | $2,100–$3,300 | Get quotes |
| AH18S2U / AH18S2N | Wall split | 5 | 6 | 4.5★ | 2.5★ | 62 | $2,100–$3,300 | Get quotes |
| LS18S0U DX6ALAP/LS18S0N DX6ALAP | Wall split | 5 | 5.1 | 3★ | 2.5★ | 57.6 | $2,100–$3,300 | Get quotes |
| WH18SLU-19 / WH18SLN-19 | Wall split | 5 | 6 | 4.5★ | 2.5★ | 65 | $2,100–$3,300 | Get quotes |
| WH18SLU-23 / WH18SLN-23 | Wall split | 5 | 6 | 4.5★ | 3★ | 65.1 | $2,100–$3,300 | Get quotes |
Every model on the Energy Rating register marked available in Australia. Stars are the zoned label for the average climate zone (average zone); indoor noise is the registered sound power level, measured the same way for every model. Installed prices are estimated 2026 supply-and-install ranges, not quotes (how we estimate them); your installer confirms the number. Browse and filter everything in the full catalogue.
FAQ
LG 5.0 kW split systems: common questions
How much does a LG 5.0 kW split system cost installed?
Typically $2,100 to $3,300 supplied and installed in 2026, depending on size and the job. 5.0 kW: $2,100 to $3,300. Pipe runs, a new circuit or a second storey add to it. Get up to three local quotes for your actual job.
Which is the quietest LG 5.0 kW split systems?
On the registered indoor sound level, the LG LS18S0N DX6ALAP (5 kW) is the quietest at 57.6 dB(A). Compare within the same size: bigger units are louder. See the quietest split systems ranking.
Which is the most energy efficient?
For the average climate zone, the LG AH18S2N (5 kW) has the highest cooling rating here at 4.5 stars. Star ratings on the zoned label run to 10, and a star is worth more in a hot zone than a mild one. For cold-climate heating, the LG WH18SLN-23 leads at 2.5 stars.
What size split system do I need?
Roughly 2.5 kW for a bedroom, 3.5 kW for a large bedroom or small living room, and 5 to 7.1 kW for open-plan living. West glass and poor insulation push it up. Use the size calculator for your room.
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