LG AC, 12000 BTU, DUAL Inverter Compressor™, Gear Control, S4-W12JA3AD, White

LG DUAL Inverter Air Conditioner – S4-W12JA3AD (12000 BTU)

Stay cool, save energy, and enjoy whisper-quiet comfort with the LG S4-W12JA3AD. Powered by the DUAL Inverter Compressor™, this 12000 BTU inverter air conditioner delivers fast, powerful cooling with exceptional energy efficiency — all in a simple, slim white design built to last.

Key Features

• DUAL Inverter Compressor™ – Efficient, faster, durable, and quieter than conventional compressors. Cools up to 40% faster than non-inverter models.*
• 10-Year Compressor Warranty – Long-term peace of mind. (1-year parts & labor + 9 years additional on compressor only.)*
• Energy Saving – Reduce energy consumption and lower your electricity bills with more efficient cooling.
• Active Energy Control (80%, 60%, 40%) – Control energy consumption with 3 levels based on your needs, whether alone or with family.
• Pre-Filter – Traps large dust particles as the first line of defense for cleaner air.
• Simple and Slim Design – A sleek white finish that complements any interior.
• Auto Cleaning – Automatically dries internal moisture to keep the unit clean and hygienic.
• Low Noise Operation – Sleep soundly with ultra-quiet operation (as low as 19 dBA).*
• Fast, Powerful Cooling & Heating – Stay comfortable all year, even in extreme climates.
• Easy-to-Monitor Energy Display – Stay informed and reduce consumption during A/C operation.*
• Quick & Easy Installation – Enjoy cool air sooner with faster, simpler installation.
• Comfort Sleep Function – Automatically adjusts settings for the most comfortable sleeping environment.*
• Safety Against Voltage Fluctuation – Protected against power surges for reliable performance.
• GYRO Sensor Remote – Change modes without needing to turn on the light.

Technical Specifications

• Model: S4-W12JA3AD
• Capacity: 12000 BTU
• Color: White
• Compressor Type: Dual Inverter Compressor™
• Refrigerant: R410A | Electronic Expansion Valve
• Defrost Method: Reverse Cycle
• Power Supply: 1Ø, 220–240V, 50Hz | Available Range: 187–276V
• Circuit Breaker: 15A | Power Cable: 3 × 1.0 mm²
• Power Supply to Unit: Outdoor

Cooling Performance

• Cooling Capacity (Min/Rated/Max): 0.9 / 3.5 / 4.03 kW (3,071 / 11,942 / 13,751 Btu/h)
• Power Input Cooling (Min/Rated/Max): 200 / 1,115 / 1,400 W
• Running Current Cooling (Min/Rated/Max): 1.10 / 5.30 / 6.00 A
• EER: 3.14 W/W (10.71 Btu/h/W)
• Power Factor – Cooling: 93.4%

Heating Performance

• Heating Capacity (Min/Rated/Max): 0.9 / 3.8 / 4.03 kW (3,071 / 12,966 / 13,751 Btu/h)
• Power Input Heating (Min/Rated/Max): 195 / 1,000 / 1,400 W
• Running Current Heating (Min/Rated/Max): 1.10 / 4.90 / 7.00 A
• COP: 3.80 W/W (12.97 Btu/h/W)
• Power Factor – Heating: 98.7%

Airflow & Comfort

• Moisture Removal: 0.66 l/h (1.39 pts/h)
• Air Flow Rate – Cooling (Max/H/M/L): 13.0 / 8.5 / 6.5 / 5.8 m³/min
• Air Flow Rate – Heating (Max/H/M/L): 14.0 / 8.5 / 6.5 / 5.8 m³/min
• Sound Pressure – Cooling (H/M/L/SL): 42 / 34 / 26 / 22 dB(A)
• Sound Pressure – Heating (H/M/L): 42 / 34 / 26 dB(A)
• Operation Range – Cooling: 18–32°C DB
• Operation Range – Heating: 16–30°C DB

Indoor Unit Dimensions

• Net (W × H × D): 837 × 308 × 189 mm
• Shipping (W × H × D): 909 × 383 × 256 mm

Warranty Coverage

• 3 Years Full Warranty by Sealco – Complete parts and labor coverage
• 10 Years Compressor Warranty by Sealco – Extended protection on the DUAL Inverter Compressor™

FAQ

Q. What is the difference between an inverter and a non-inverter air conditioner?
A. Non-inverter air conditioners run the compressor at a fixed speed, switching off when the desired temperature is reached and back on when it rises. Inverter air conditioners continuously adjust the compressor speed — faster when it’s hot, slower when it’s cool — for more consistent comfort and lower energy use.

*Verified by TÜV – LG inverter air conditioners cool up to 40% faster than LG non-inverter models. Initial Temperature: Outdoor 35°C, Indoor 33°C; Setting Temperature: 26°C. | *Noise level based on LG internal test (Model V10API): less than 19 dBA. | *Comfort Sleep function must be activated. | *Energy consumption during A/C operation only.