18,000 BTU Room Air Conditioner with 12,000 BTU Electric Heat, 9.7 EER, 5.5 Pts/Hr Dehumidification, Energy Saver, Remote Control and 230/208 Volts


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Window Air Conditioner - LW1813HR
Celebrate Being Indecisive
Temperatures don't always match up with their corresponding season. Which is why they've created an energy efficient, single unit air conditioner and heater. It provides seasonal heating and cooling so you can feel comfortable all year round, no matter the season. And with 18,000 BTUs, it can heat up to 550 square feet, or cool up to 1,000 square feet.

Seasonal Heating and Cooling
Whether it's cold in April or hot in October, they've got you covered all year round so you can always feel comfortable at home.

Multiple Cooling/Heating Speeds
Control the temperature of the room at your pace with their multiple heating and cooling options.

4-Way Air Direction
Enjoy the cool air even more with their 4-way air direction. By adjusting the deflection, air is directed up, down, left or right to move the air where it's needed most.

Welcome To LG
LG Electronics USA Commercial Air Conditioning business is a leading player in the global air conditioning market, manufacturing both commercial and residential air conditioners and providing total sustainability and building management solutions. From consumer units to commercial air conditioning systems, LG provides a wide range of innovative products for heating, ventilating and air conditioning.

How To Choose A Room Air Conditioner
Compared to large capacity central units, room air conditioners have several advantages. The initial cost of a room air conditioning unit is significantly lower than the cost of central air. Because room air conditioners are designed for cooling small spaces, operating costs are reduced. And, room air conditioners can provide personalized temperature and humidity controls that central systems cannot.

Calculating Cooling Capacity
Cooling capacity is the critical factor in properly selecting a room air conditioner. Cooling capacity is measured in British Thermal Units (BTUs) and typical models will range in capacity from 5,000 BTUs to 28,500 BTUs.

Choosing an undersized unit will overwork the unit and it will not cool properly. Choosing an over-sized unit will cost more to buy and operate and it will not dehumidify properly.

We can help you to calculate capacity. Be prepared to provide specific information on:
  • Room Dimensions
  • A simple floor plan to show the location of doors and north-facing windows
  • The number of people it will serve
  • Sources of heat such as lamps, TV and appliances
  • An explanation of what's above the intended room
  • Your insulation provisions

Cooling Capacity by Room Size
Measure the length and width of the area to be cooled. Multiply the length by the width to determine square footage or square meters. Locate the room size in the chart below to select the appropriate BTUs. Then use the product information to select the unit for your room. When cooling rooms with uninsulated ceilings, great rooms, or southern or western sun exposures - step up to the next BTU size.

Room SizeBTU
Sq. Ft.Sq. m
15014 up to 5,000
16515 5,200

Air Conditioner Tips
Air flow - Keep air filters clean. Do not block air flow areas.

Roomside view - J-models feature concealed power cord storage, this eliminates excessive cord exposure when receptacle is located close to unit.

Wall Opening For RAB46/47/48 Cases
A finished opening of 26 1/8" x 15 3/4", clear of intrusions, is required. Keep clearance of 4" from side walls. Brick veneer or frame walls should have wood studding surrounding case to provide firm anchoring with screws. Case can be fastened directly to brick or block walls with screws sunk in lead expansion shields. NOTE: units should be caulked on all four sides of case to the building exterior to assure building integrity.
Energy Info
This air conditioner has an Energy Efficiency Rating of 9.7 and has an estimated yearly operating cost of $154.35.

Your operating costs will depend on your utility rates and use. The estimated yearly operating cost is based on the 2011 national average cost of $.1109 cents per kWh for electricity and an estimated number of operating hours of 750 hours.

For more information, visit www.ftc.gov/appliances.
BTU Performance (Cooling): 18,000/17,500 BTU
BTU Performance (Heating): 12,000/9,800 BTU
EER: 9.7/9.7
Energy Star: No
Dehumidification: 5.5 Pts/Hr
Dry Air Flow: 430 CFM
dBA Level (Indoor/Outdoor): 63/55 dBA
Est. Cooling Area: 1,000 Sq. Ft.
Thermostat Control: Thermistor
Air Direction: 4-Way
Remote Controller: Yes
Auto Swing: Yes
Energy Saver Function: Yes
Timer: 24 Hr. On/Off
Fan Speed Cooling: 2
Fan Speed Heating: 2
Fan Only Speed: 2
Compressor: Rotary
In Door Fan Type: Blower
Type Air Discharge: Side By Side
Outdoor Vent/Exhaust: Yes
Chassis Type: Slide In-Out
Color: White
Warranty: 1 Year Parts and Labor
Electrical Rating
Voltage/60Hz: 230/208 Volts
Watts (Cooling): 1,850/1,800 Watts
Watts (Heating): 3,670/3,100 Watts
Rated Amps (Cooling): 8.3/9.0 Amps
Rated Amps (Heating): 16.0/15.0 Amps
Dimensions and Weights
Overall Width: 26"
Overall Depth: 30 5/16"
Overall Height: 16 27/32"
Net Weight: 136.0 Lbs.
Shipping Weight: 150.0 Lbs.
Stuffing Quantity (20 Ft./40 Ft.): 84/176
  • Performance
  • 17,500/18,000 BTU Cooling
  • 9,800/12,000 BTU Heating
  • Cooling EER (BTU/Watts) 9.7/9.7
  • Dehumidification (Pts/Hr) 5.5
  • Estimated Cooling Area 1,000 Sq. Ft.
  • Features
  • Seasonal Heating and Cooling
  • Multiple Cooling/Heating Speeds
  • 4-Way Air Direction
  • Remote Control
  • Timer 24 Hr. On/Off
Info and Guides

Adobe Acrobat FileSpec Sheet

Adobe Acrobat FileOwners Manual

Adobe Acrobat FileEnergy Guide

You will need Adobe Acrobat Reader to view and print pdf files

Adobe Reader
Product Reviews
Rated 4.8 out of 5 by 5 reviewers.
Rated 5 out of 5 by This product lives up to my expatations. We have been able to use both the air and heat and the worked very good. The energy saver feature work good and the auto swing has worked great. 3/13/13
Rated 5 out of 5 by Turned out to be a work horse! I am building my art studio in the deep south of Alabama. It is over 400 sq.ft. with 10ft wall-ceiling. I have two french doors (with blinds) in front where the morning and afternoon sun directly hit. There is no insulation on that wall nor dry wall as of yet; ceiling is not insulated either. One side wall is attached to the house and the other is insulated where I installed a 4ft.H x 31/2ft W window. The AC was installed in this window which is towards the front of building and only 2ft above the floor. I still have construction going on and an ATV blocking its air flow, BUT even with all this against it working properly it still got my studio down to 74 degrees (Fahrenheit). Hardly a sound...in fact I have to check to see if its on. 7/5/13
Rated 5 out of 5 by Possitivly the best This unit was bought after the many reviews that I read. This unit is really quite, not the window shakers that you hear about. We put the unit on 76 degrees and it cools the whole house very comfortably in the hot Florida weather that we are experiencing this year. Installation was easy. This unit does the job! 9/26/14
Rated 5 out of 5 by Best A/C Yet! This a/c unit is the best one we've had yet. Surprisingly quiet for the 18,000 BTU's power. Keeps a small condo (600 sq ft) comfortably cool even in Florida summer heat. Much superior to the two other a/c units we've had before this one. Highly recommend. 7/16/15
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Quick Specs
Quick Specs


  • Width : 26 Inch
  • Depth : 30 5/16 Inch
  • Height : 16 27/32 Inch


  • Type : Window / Wall
  • Chassis Type : Slide Out
  • Wall Sleeve Included : No
  • Cooling Capacity (BTU) : 18,000 BTU
  • Maximum Cooling Amps : 8.3 Amps
  • Maximum Cooling Watts : 1,850 Watts
  • Heating Capacity (BTU) : 12,000 BTU
  • Maximum Heating Amps : 16 Amps
  • Maximum Heating Watts : 3,670 Watts
  • Heat : Electric Heat
  • CFM Room Circulation : 430 CFM
  • Energy Efficiency Rating : 9.7
  • Control Type : Digital
  • Remote Control Included : Yes
  • PTAC : No
  • Window Type : Standard

Technical Details

  • Energy Star Rated : No
  • ADA Compliant : No
  • Plug Type : 6-20P
  • Voltage : 230/208 Volts
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