To properly experience our website, you will need to use an alternate browser or upgrade to a newer version of internet Explorer (IE9 or greater).

The website utilizes responsive design to provide convenient experience that conforms to your devices screen size. In order to get the best possible experience our LG.COM website please follow below instructions.

If you’re using Internet Explorer 8 or earlier, you will need to use an alternate browser such as Firefox or Chrome or upgrade to a newer version of internet Explorer (IE9 or greater).

If you’re using Internet Explorer 9 and higher, turn off your Internet Explorer browser’s “Compatibility View settings” by following steps below:

  • Right click at the top of your browser and make sure the “Menu Bar” option is selected
  • Select “Tools” from the menu bar and then select “Compatibility View settings”
  • In the pop-up menu uncheck all three boxes and click “Close”
  • Your browser window will automatically refresh and you’ll be ready to go
Skip to Contents


  • S366EC

Key Features

  • Cools even at 60°C
  • Patented Anticorrosion Coating
  • Corrosion Resistance
  • Powerful Cooling up to 20m
  • Faster Cooling
  • Multi Directional Cooling

Cools even at 60°C

The Super Tropical Compressor with By-pass cycle enables high temperature operation by creating one more cycle inside of the outdoor. By-pass cycle reduce refrigerant temperature and pressure so that the air conditioner can operate without failure even up to 60℃.

Patented Anticorrosion Coating

The gold-colored special coating on the fin of the heat exchanger prevents corrosion, extending the life of the unit.

Corrosion Resistance

Special treatments provide exceptional durability for use in coastal regions where the outdoor units of air conditioners are exposed to a high risk of corrosion.

Powerful Cooling up to 20m

Keep cool this summer with the new larger fan and chassis that allow you to feel the air from up to 20 meters away. Now cooling is more faster and powerful, and allows you to feel comfortable sooner.

Faster Cooling

LG air conditioner provides optimized high-speed airflow, which can cool a room faster while delivery cool air evenly in every direction.

Multi Directional Cooling

Cool air reaches out to all directions and each corner of the room regardless of where the air conditioner is installed.

Dual Protection Filter

The Dual Protection Filter collect dust and bacteria.

General Specifications
Compressor Scroll
Power Supply (ø / V / Hz) 1 / 220-240 / 50
Air Flow Rate (Indoor,Max) m³/min(CFM) 28.0(989)
Air Flow Rate (Outdoor,Max) m³/min(CFM) 70.0(2,472)
Noise Level © (Indoor,H/M/L/LL) dB(A)±3 51 / 46 / 42 / -
Noise Level © (Outdoor,Max) dB(A)±3 60
Refrigerant & Charge g(oz) R22, 2,300(81.1)
Additional Refrigerant charge g/m 40
Max. Piping Length m(ft) 30(98.4)
Max. Elevation Difference m(ft) 15(49.2)
Circuit Breaker A 35
Cooling (Min/Rated/Max)
T1 kW 10.0
T1 Btu/h. 34,000
T3 kW 8.7
T3 Btu/h. 29,500
Power Input (Cooling)
T1(W) 3,300
T3(W) 4,040
Running Current (Cooling)
T1(A) 15.5
T3 A 18.6
T1(W/W) 3.0
T1(Btu/h.W) 10.3
T3 W/W 2.1
T3 Btu/h.W 7.30
Heat exchanger
Evaporator Cu / Al
Condenser(Material, Tube/Fin) Cu / Al
Fin type Gold Fin™
Net Weight
Indoor (kg(lbs)) 18(39.7)
Outdoor (kg(lbs)) 71(153.4)
Operation Range (Min~Guaranteed~Max)
Cooling(Outdoor) °C 21~54~60 °C
Circuit Breaker
A 35
Piping Connections
Liquid Side (mm(in)) 9.52(3/8)
Gas Side (mm(in)) 15.88(5/8)
Indoor(W*H*D)(mm) 1190*346*265
Indoor(W*H*D)(inch) 46.9*13.6*10.4
Outdoor(W*H*D)(mm) 950*832*330
Outdoor(W*H*D)(inch) 37.4*32.8*13.0
Deodorization Triple Filter Yes
Dual Protection Filter(Washable/Anti-fungus) Yes


Simply choose a support option from the icons below: