About LG WH24SL-18 7.1 kW Premium Series Inverter Split System Air Conditioner
The LG WH24SL-18 7.1 kW Inverter Split System Air Conditioner is a high-capacity premium solution that comes within LG’s Deluxe lineup, designed to provide quite powerful and efficient climate control for very large residential or light commercial areas usually more than 45 square meters. It provides 7.1 kW cooling and 8.0 kW heating power which are the main features of the LG WH24SL-18 7.1kW air conditioner. The unit not only incorporates the core smart technologies such as Built-in Wi-Fi (ThinQ®) and the energy-saving Active Energy Control but also offers a variety of advanced air-quality features, with the Plasmaster™ Ioniser Plus being the most prominent one. Thus, it becomes an ideal choice for consumers who are looking for the highest performance, great purification of air and the support of 10-Year Inverter Compressor Warranty for durability.
Key Features and Explanations
| Key Feature |
Explanation |
| Smart Inverter Compressor™ |
Features LG’s twin-rotary compressor technology, which constantly modulates its speed. This provides precise temperature control with less fluctuation and is backed by an impressive 10-Year Compressor Parts Warranty. |
| Plasmaster™ Ioniser Plus |
An advanced air quality feature that generates millions of plasma ions. These ions actively filter and sterilize the air, reducing airborne bacteria, odor’s, and allergens within the indoor environment and inside the unit itself. |
| Built-in Wi-Fi Smart Control |
Allows full unit control, scheduling, and power monitoring via the LG ThinQ® App on a smartphone. It also enables voice control compatibility with devices like Google Assistant and Amazon Alexa. |
| Active Energy Control (4-Step) |
A unique function enabling the user to limit the unit’s maximum power consumption in adjustable steps (100%, 80%, 60%, 40%). This helps prevent circuit overload and conserves power during peak electricity tariff times. |
| Auto Cleaning |
Runs a fan cycle after operation to dry the internal coil of the indoor unit. This minimizes moisture buildup, which is essential for preventing the growth of mould, mildew, and odor’s. |
| Gold Fin™ Protection |
A durable, anti-corrosive coating applied to the heat exchanger of the outdoor unit, providing enhanced protection against rust and corrosion in demanding climates, particularly coastal regions. |
| High Efficiency Ratings |
Despite being a high-capacity unit (which are inherently less efficient than small models), it achieves solid efficiency ratings of AEER approx 3.75 and ACOP approx 4.02. |
Design & Aesthetic Appeal
LG WH24SL-18 indoor unit has a large-scale, functional, and minimalist design that can match with its high capacity, consisting of a sleek white surface that is meant to be very soft and not overly decorative. The design focuses on the clean and unobtrusive front panel of the unit which cleverly hides the Plasmaster™ Ioniser Plus feature that is turned off and still maintains a flush look. The unit is taking on the rounded shapes of LG’s high end line but its impressive size becomes the dominating characteristic making it a powerful presence that is indispensable for good air circulation in very large rooms, although less subtle than small capacity units.
Technical Specifications
| Feature Category |
Specification |
Value |
Unit |
| Model Numbers |
Indoor / Outdoor Unit |
WH24SLN-18 / WH24SLU-18 |
– |
| Capacity (Rated) |
Cooling / Heating |
7.10 / 8.00 |
kW |
| Capacity Range |
Cool Min / Max |
1.00 / 8.60 |
kW |
| Energy Efficiency |
AEER (Cooling) |
3.75 |
W/W |
| Energy Efficiency |
ACOP (Heating) |
4.02 |
W/W |
| Energy Star Rating |
Cooling / Heating |
3.0 / 3.5 |
Stars |
| Rated Power Input |
Cooling / Heating |
1.89 / 1.99 |
kW |
| Indoor Unit Dimensions |
Width x Height x Depth |
1060 x 360 x 265 |
mm |
| Indoor Unit Weight |
Net Weight |
16.6 |
kg |
| Outdoor Unit Dimensions |
Width x Height x Depth |
870 x 800 x 320 |
mm |
| Outdoor Unit Weight |
Net Weight |
55.0 |
kg |
| Indoor Noise Level |
Sleep Mode (Min) |
30 |
dB(A) |
| Outdoor Noise Level |
Sound Pressure (Rated) |
66 |
dB(A) |
| Refrigerant Type |
Standard |
R32 |
– |
| Pipe Sizes |
Liquid / Gas |
9.52 mm / 15.88 mm |
– |
| Max Piping Length |
Installation Limit |
30 |
m |
| Max Elevation Difference |
Installation Limit |
20 |
m |
| Key Feature |
Air Quality |
Plasmaster™ Ioniser Plus |
– |
| Key Feature |
Connectivity |
Built-in Wi-Fi (LG ThinQ®) |
– |
| Warranty (Compressor) |
Standard |
10 Years (Parts) |
– |
Strengths & Weaknesses
Strengths (Premium Performance & Features)
- Effective Power: The device with 7.1 kW Cooling and 8.0 kW Heating is very powerful at quickly and constantly conditioning very large living spaces and open areas (approximately 65square meters).
- Impressive Energy Efficiency for the Size: With 3.75 AEER and 4.02 ACOP (3.0/3.5 Star Ratings), it is among the best in terms of energy consumption for high-capacity models and thus it will have better running costs in the long run than lower-rated models.
- Quality Air: Comes with Plasmaster™ Ioniser Plus, which not only kills germs in the air but also on the internal coil, thus greatly reducing bacteria, allergens, and even odors.Amazing Control and Monitoring: Having Built-in Wi-Fi (ThinQ® App) for smooth remote control and at the same time Active Energy Control (4-Step) that precisely allows the user to budget and limit power consumption.
- Durability and Warranty: A strong 10-Year Inverter Compressor Parts Warranty and Gold Fin™ anti-corrosion coating on the outdoor unit promise reliable and long-lasting performance even in harsh conditions.
- Operating Conditions: The device is capable of cooling down to -10°C and heating down to -15°C which makes it suitable for different and difficult Australian environments.
Weaknesses (Cost and Installation Complexity)
- High Initial Cost: Being a large-capacity and premium-featured unit, the initial purchase price together with professional installation still amounts to a very significant cost, and therefore, a large upfront investment will be required.
- Large Footprint: Both indoor (1060 mm wide) and outdoor units are very large and heavy which means they will take up a lot of space and possibly affect the look of small wall sections.
- Complex Installation: A large installation will be subject to 9.52 mm liquid and 15.88 mm gas piping as well as a 25 Amp circuit breaker! This increases the costs of labor and materials compared to smaller standard installations.
- Noise in Quiet Mode: The indoor noise level for the unit is (approx 30 dB(A)) which is quite good for its size but still not the (approx 22 dB(A)) level of silence achieved by smaller, quiet-focused premium models.
- Remote/Wi-Fi Friction (Reported): The initial setup of Wi-Fi is generally reported to be difficult by users, and the remote may not have a backlight—a very small but common complaint that takes away a bit from the luxury user experience.
Why the LG WH24SL-18 is an Excellent Choice
The WH24SL-18 is the ideal investment for those who need a no-compromise solution for a large, valuable living space, where performance, air quality, and long-term peace of mind justify the premium price.
For Premium Performance and Comfort
- Ultimate Power for Large Spaces: Its 7.1 kW cooling and 8.0 kWheating capacities guarantee effective and rapid climate control for vast open-plan rooms 45 to 65 square meters, avoiding the strain and inefficiency of running an undersized unit.
- Superior Air Quality and Health: The inclusion of the Plasmaster™ Ioniser Plus is a significant premium feature. It actively filters and sterilizes the air, making it an excellent choice for allergy sufferers or anyone prioritizing a cleaner indoor environment.
- High Efficiency for its Size: With 3.75 AEER (3.0 Stars), it delivers excellent energy efficiency for a large-capacity system, minimizing the high running costs that are typical for 7 kW units.
- Durability and Assurance: It features the Gold Fin™ anti-corrosion protection and is backed by a 10-Year Inverter Compressor Warranty, offering best-in-class security for the longevity of the unit.
For Smart Control and Management
- Seamless Smart Integration: The Built-in Wi-Fi and ThinQ App provide complete remote and voice control, essential for pre-cooling a large area on the way home or monitoring its performance.
- Active Energy Budgeting: The Active Energy Control (4-Step) is highly valuable, allowing users to consciously reduce power consumption during peak load times (or when relying on solar power), effectively giving the user control over their running costs.
Potential Drawbacks (Based on User Feedback)
User reports and specifications have revealed and brought about the most common drawbacks as follows:
- Size and Installation: The 7.1 kW system is very powerful, and therefore, the indoor and outdoor units are significantly bigger (Indoor: 1060 mm wide), taking up more space and needing special 9.52 mm liquid and 15.88 mm gas piping, thus increasing the cost and complexity of installation.
- Noise in Sleep Mode (Reported): The noise for a large unit is low in general, but during the quietest mode may be approx 30 dB(A), which could be perceived if compared to ultra-quiet premium models in smaller capacities that are already less noisy.
- Wi-Fi Setup & Remote: As it’s the case with other LG series, some users mention that the first ThinQ Wi-Fi setup can be difficult, and that the remote may come without a backlight, which is a small inconvenience for nighttime use.
- High Upfront Cost: A Premium model with advanced features and large capacity, the initial purchase price is high.
Summary from LG’s Perspective
LG markets the WH24SL-18 as a flagship, high-performance solution for the most demanding residential or light commercial spaces. The primary selling points are its powerful cooling and heating capacity, its superior durability (Gold Fin™ and 10-Year Warranty), and its focus on wellness, thanks to the Plasmaster™ Ioniser Plus and Auto Cleaning. LG positions it as the smart choice for consumers who need maximum power and are willing to invest in premium features and higher energy efficiency (relative to its large size).even for light sleepers and is a drawback as LG’s higher-tier lines lack the advanced air purification (like the Ioniser) available in the lower tier lines..
LG WH24SL-18 7.1kW Premium Series Inverter Split System Air Conditioner Price in Australia
The LG WH24SL-18 7.1kW Premium Series Inverter Split System is available Australia-wide with expert installation from Aussie Solar Tech, ideal for medium-sized homes.
✔ Competitive pricing
✔ Professional installation by licensed technicians
✔ Flexible payment options available
Approximate unit price: $1,600 – $1,750 AUD (Indoor +outdoor unit)
For installation and full package pricing, please contact Aussie Solar Tech for a tailored quote.Request a free quote today and enjoy whisper-quiet comfort year-round.
More Options from LG:
- LG WS18TWS 3.5kW Smart Series Inverter Split System Air Conditioner
- LG WS18TWS 4.8kW Smart Series Inverter Split System Air Conditioner
FAQ
1.How does the Plasmaster™ Ioniser Plus work?
This feature generates over 3 million plasma ions that are released into the air. These ions attach to and neutralize airborne particles, viruses, bacteria, and odours, actively sterilizing the air in the room and minimizing contaminants inside the unit.
2.How do I view the real-time energy usage?
You can press the ‘Energy Monitoring’ button on the remote. The unit’s display will then show the current energy consumption. For weekly or monthly usage patterns, you must use the LG ThinQ® app.
3.Is the 7.1 kW capacity unit suitable for a bedroom?
Generally, no. The 7.1kW unit is intended for very large areas (approx 45 to 65 square meters. The capacity is oversized for a standard bedroom, and its lowest noise level (approx 30 dB(A)) is noticeably louder than the ultra-quiet (22 dB(A)) models in smaller capacities.
4.How does the Auto Cleaning function work?
After running a cycle, the Auto Cleaning function runs the fan for a set time (typically 10-30 minutes) while the compressor is off. This dries the internal heat exchanger coil, preventing the moisture that leads to the growth of mould, mildew, and odours.
