Home Air Conditioners LG 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner

LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White

Price range: $649.99
Brand: LG
Category: Air Conditioner
A LG 18,000 BTU Window air conditioner for rooms up to 1,000 sq. ft. · 3 fan speeds · CEER 11.8.
PQS: 87 (computed 2026-03-18 07:11:51.799975+00:00)
GTIN-14: 00048231605052
LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White

Key specs

A human-friendly subset of specs (non-null)
Type
Window
BTU
18,000
Room size
1,000 sq. ft.
Smart/WiFi
Yes
Fan speeds
3
Efficiency
CEER 11.8
Dimensions
17.68" H × 25.98" W × 28.11" D
Energy Star
No

Features

  • Wi‑Fi / smart control
  • Remote control
  • Fan speeds: 3
  • CEER 11.8

Installation notes

  • Opening width: 29 inches

How this Air Conditioner compares vs. 198 air conditioners

Percentile rank for each spec — higher means this product outperforms more of its peers.
BTU 18000.0
93% Top 10%
Room Coverage 1000.0sqft
95% Top 10%

Spec Profile Radar

Visual snapshot — outer edge = 100th percentile (best in class)

Offers

Retailer SKU Price Stock Offer Last seen
Best Buy 6505626 649.99 USD In stock View offer → 2026-03-19 02:39:52.485495+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 649.99 USD In stock 2026-03-19 02:39:52.485495+00:00
bestbuy 649.99 USD In stock 2026-03-18 02:47:54.412068+00:00
bestbuy 649.99 USD In stock 2026-03-17 02:50:57.614749+00:00
bestbuy 649.99 USD In stock 2026-03-16 02:48:58.742668+00:00
bestbuy 649.99 USD In stock 2026-03-15 02:37:48.118208+00:00
bestbuy 649.99 USD In stock 2026-03-14 02:41:01.257628+00:00
bestbuy 649.99 USD In stock 2026-03-13 02:50:35.614427+00:00
bestbuy 649.99 USD In stock 2026-03-12 02:41:45.830042+00:00
bestbuy 649.99 USD In stock 2026-03-11 02:40:22.171700+00:00
bestbuy 649.99 USD In stock 2026-03-10 02:49:49.715900+00:00
bestbuy 649.99 USD In stock 2026-03-09 02:48:53.181859+00:00
bestbuy 649.99 USD In stock 2026-03-06 06:07:48.732287+00:00
bestbuy 649.99 USD In stock 2026-03-03 01:58:18.097609+00:00
bestbuy 649.99 USD In stock 2026-03-02 08:00:07.228994+00:00

Full specs

Show full spec table
BTU18000
Room size (sq. ft.)1000
Energy StarNo
TypeWindow
Smart/WiFiYes
Fan speeds3
CEER/EER11.8
Dimensions17.68 x 25.98 x 28.11 in
Reconciled at2026-03-06 05:26:31.594678+00:00
Canonical JSON (expand)
{
  "os": {
    "name": null
  },
  "car": {
    "type": null,
    "finish": null,
    "din_type": null,
    "included": null,
    "material": null,
    "compatibility": null,
    "included_trim": null,
    "included_screws": null,
    "included_harness": null,
    "included_adapters": null,
    "included_brackets": null,
    "compatibility_make": null,
    "compatibility_model": null,
    "compatibility_years": null,
    "included_connectors": null,
    "included_instructions": null,
    "retains_factory_features": null
  },
  "cpu": {
    "cores": null,
    "tdp_w": null,
    "socket": null,
    "threads": null,
    "npu_tops": null,
    "cpu_model": null,
    "lithography": null,
    "base_clock_ghz": null,
    "boost_clock_ghz": null
  },
  "gpu": {
    "tdp_w": null,
    "chipset": null,
    "outputs": null,
    "vram_gb": null,
    "gpu_type": null,
    "gpu_model": null,
    "vram_type": null,
    "base_clock_mhz": null,
    "boost_clock_mhz": null
  },
  "core": {
    "title": "LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White"
  },
  "lens": {
    "mount": null,
    "weight": null,
    "focal_length": null,
    "max_aperture": null,
    "stabilization": null
  },
  "audio": {
    "driver": null,
    "wireless": "Wi-Fi",
    "impedance_ohms": null,
    "wireless_codecs": null,
    "frequency_response": null
  },
  "brand": "LG",
  "color": null,
  "extra": null,
  "model": "LW1821ERSM",
  "ports": {
    "hdmi": null,
    "usb_a": null,
    "usb_c": null,
    "sd_card": null,
    "summary": null,
    "ethernet": null,
    "displayport": null,
    "thunderbolt": null,
    "headphone_jack": null
  },
  "camera": {
    "mount": null,
    "sensor": null,
    "weight": null,
    "iso_range": null,
    "megapixels": null,
    "video_resolution": null
  },
  "gtin14": "00048231605052",
  "memory": {
    "ram_gb": null,
    "ram_type": null
  },
  "series": null,
  "battery": {
    "life_hours": null,
    "capacity_wh": null,
    "capacity_mah": null
  },
  "display": {
    "panel_type": "LED",
    "resolution": null,
    "color_gamut": null,
    "hdr_formats": null,
    "touch_screen": null,
    "screen_size_in": null,
    "brightness_nits": null,
    "refresh_rate_hz": null
  },
  "release": {
    "year": null
  },
  "storage": {
    "interface": null,
    "nand_type": null,
    "read_speed": null,
    "capacity_gb": null,
    "form_factor": null,
    "write_speed": null,
    "endurance_tbw": null,
    "storage_capacity_gb": null
  },
  "category": "air_conditioner",
  "features": {
    "webcam": null,
    "form_factor": null,
    "backlit_keyboard": null,
    "convertible_2in1": null,
    "fingerprint_reader": null
  },
  "physical": {
    "weight_kg": 58.97,
    "dimensions_in": "17.68 x 25.98 x 28.11 in"
  },
  "wearable": {
    "ecg": null,
    "gps": null,
    "spo2": null,
    "skin_temp": null,
    "heart_rate": null,
    "display_type": null,
    "nfc_payments": null,
    "compatibility": null,
    "music_storage": null,
    "sleep_tracking": null,
    "display_size_in": null,
    "battery_life_days": null,
    "stress_monitoring": null,
    "smart_notifications": null,
    "workout_modes_count": null,
    "water_resistance_atm": null
  },
  "appliance": {
    "btu": 18000,
    "eer": null,
    "ceer": "11.8",
    "type": "Window",
    "modes": null,
    "smart": true,
    "steam": null,
    "zones": null,
    "finish": "White",
    "air_fry": null,
    "burners": null,
    "voltage": null,
    "inverter": null,
    "noise_db": null,
    "fuel_type": null,
    "ice_maker": null,
    "wattage_w": null,
    "convection": null,
    "depth_type": null,
    "door_alarm": null,
    "fan_speeds": 3,
    "frost_free": null,
    "rack_count": null,
    "sensor_dry": null,
    "third_rack": null,
    "airflow_cfm": null,
    "energy_star": false,
    "filter_type": null,
    "glide_racks": null,
    "soil_sensor": null,
    "broiler_type": null,
    "cycles_count": null,
    "defrost_type": null,
    "garage_ready": null,
    "tub_material": null,
    "venting_type": null,
    "air_direction": null,
    "baskets_count": null,
    "capacity_cuft": null,
    "cleaning_type": null,
    "drum_material": null,
    "drying_system": null,
    "energy_rating": null,
    "lighting_type": null,
    "mounting_type": null,
    "shelves_count": null,
    "cooling_system": null,
    "dimensions_hwd": "17.68 x 25.98 x 28.11 in",
    "interior_light": null,
    "place_settings": null,
    "room_size_sqft": 1000,
    "sanitize_cycle": null,
    "sensor_cooking": null,
    "shelf_material": null,
    "spin_speed_rpm": null,
    "turntable_size": null,
    "bottle_capacity": null,
    "convection_type": null,
    "water_dispenser": null,
    "interior_coating": null,
    "annual_energy_kwh": null,
    "cutout_dimensions": null,
    "humidity_crispers": null,
    "temperature_range": null,
    "wash_cycles_count": null,
    "oven_capacity_cuft": null,
    "water_level_control": null,
    "agitator_or_impeller": null,
    "capacity_fridge_cuft": null,
    "daily_production_lbs": null,
    "independent_controls": null,
    "capacity_freezer_cuft": null,
    "lower_oven_capacity_cuft": null,
    "upper_oven_capacity_cuft": null
  },
  "networking": {
    "ports": null,
    "band_count": null,
    "throughput": null,
    "wifi_standard": null,
    "ethernet_ports": null
  },
  "peripheral": {
    "dpi": null,
    "rgb": null,
    "platform": null,
    "driver_mm": null,
    "vibration": null,
    "microphone": null,
    "sensor_type": null,
    "switch_type": null,
    "connectivity": null
  },
  "smart_home": {
    "learning": null,
    "resolution": null,
    "connectivity": null,
    "night_vision": null,
    "power_source": null,
    "compatibility": null,
    "chime_included": null
  },
  "schema_version": 1
}
Debug data (expand)
Raw title LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White
Raw brandLG
Raw categoryBest Buy > Appliances > Heating, Cooling & Air Quality > Air Conditioners > Window Air Conditioners
Canonical highlights (non-null)
core.title LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White
audio.wireless Wi-Fi
brand LG
model LW1821ERSM
gtin14 00048231605052
display.panel_type LED
category air_conditioner
physical.weight_kg 58.97
physical.dimensions_in 17.68 x 25.98 x 28.11 in
appliance.btu 18000
appliance.ceer 11.8
appliance.type Window
appliance.smart True
appliance.finish White
appliance.fan_speeds 3
appliance.energy_star False
appliance.dimensions_hwd 17.68 x 25.98 x 28.11 in
appliance.room_size_sqft 1000
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
{
  "sku": 6505626,
  "upc": "048231605052",
  "url": "https://api.bestbuy.com/click/-/6505626/pdp",
  "name": "LG - 1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner - White",
  "image": "https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/1c14cc7c-d9a2-41d2-86bd-5d9226cf5566.jpg",
  "details": [
    {
      "name": "Brand",
      "value": "LG",
      "values": [
        "LG"
      ]
    },
    {
      "name": "Model Number",
      "value": "LW1821ERSM",
      "values": [
        "LW1821ERSM"
      ]
    },
    {
      "name": "Product Name",
      "value": "1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner",
      "values": [
        "1,000 Sq. Ft. 18,000 BTU 230V Smart Window Air Conditioner"
      ]
    },
    {
      "name": "Color",
      "value": "White",
      "values": [
        "White"
      ]
    },
    {
      "name": "Minimum Window Opening Height",
      "value": "19 inches",
      "values": [
        "19 inches"
      ]
    },
    {
      "name": "Minimum Window Opening Width",
      "value": "29 inches",
      "values": [
        "29 inches"
      ]
    },
    {
      "name": "Maximum Window Opening Height",
      "value": "30 inches",
      "values": [
        "30 inches"
      ]
    },
    {
      "name": "Maximum Window Opening Width",
      "value": "41 inches",
      "values": [
        "41 inches"
      ]
    },
    {
      "name": "Product Height",
      "value": "17.68 inches",
      "values": [
        "17.68 inches"
      ]
    },
    {
      "name": "Product Width",
      "value": "25.98 inches",
      "values": [
        "25.98 inches"
      ]
    },
    {
      "name": "Product Depth",
      "value": "28.11 inches",
      "values": [
        "28.11 inches"
      ]
    },
    {
      "name": "Product Weight",
      "value": "130 pounds",
      "values": [
        "130 pounds"
      ]
    },
    {
      "name": "Cord Length",
      "value": "4.4 inches",
      "values": [
        "4.4 inches"
      ]
    },
    {
      "name": "Recommended Room Size",
      "value": "1000 square feet",
      "values": [
        "1000 square feet"
      ]
    },
    {
      "name": "BTU Cooling Rating",
      "value": "18000 british thermal units",
      "values": [
        "18000 british thermal units"
      ]
    },
    {
      "name": "Number of Cool Settings",
      "value": "3",
      "values": [
        "3"
      ]
    },
    {
      "name": "Number of Fan Speeds",
      "value": "3",
      "values": [
        "3"
      ]
    },
    {
      "name": "Airflow Rate",
      "value": "530 cubic feet per minute",
      "values": [
        "530 cubic feet per minute"
      ]
    },
    {
      "name": "Maximum Noise Level",
      "value": "65 decibels adjusted",
      "values": [
        "65 decibels adjusted"
      ]
    },
    {
      "name": "Moisture Removal Capacity",
      "value": "4.9 pints per day",
      "values": [
        "4.9 pints per day"
      ]
    },
    {
      "name": "Remote Control",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Control Type",
      "value": "Button",
      "values": [
        "Button"
      ]
    },
    {
      "name": "Display Type",
      "value": "LED",
      "values": [
        "LED"
      ]
    },
    {
      "name": "Integrated Heater",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Sleep Mode",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Timer",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Auto Shut-Off",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Energy Efficiency Ratio",
      "value": "11.9",
      "values": [
        "11.9"
      ]
    },
    {
      "name": "Combined Energy Efficiency Ratio (CEER)",
      "value": "11.8",
      "values": [
        "11.8"
      ]
    },
    {
      "name": "Voltage Requirement",
      "value": "230",
      "values": [
        "230"
      ]
    },
    {
      "name": "Amperage",
      "value": "15 amperes",
      "values": [
        "15 amperes"
      ]
    },
    {
      "name": "Estimated Annual Electricity Use",
      "value": "11.9 kilowatt hours",
      "values": [
        "11.9 kilowatt hours"
      ]
    },
    {
      "name": "ENERGY STAR Certified",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "App Compatible",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Works With",
      "value": "Amazon Alexa",
      "values": [
        "Amazon Alexa",
        "Google Home"
      ]
    },
    {
      "name": "Wireless Connectivity",
      "value": "Wi-Fi",
      "values": [
        "Wi-Fi"
      ]
    },
    {
      "name": "Window Mounting Kit Included",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Air Conditioner Type",
      "value": "Window",
      "values": [
        "Window"
      ]
    },
    {
      "name": "Warranty - Parts",
      "value": "1 year limited",
      "values": [
        "1 year limited"
      ]
    },
    {
      "name": "Warranty - Labor",
      "value": "1 year limited",
      "values": [
        "1 year limited"
      ]
    }
  ],
  "features": [
    {
      "feature": "Total Remote Control\nUtilize LG ThinQ Technology to command your LG LW1821ERSM window air conditioner from anywhere, managing cooling, modes, and temperature adjustments even on the go with seamless compatibility with Amazon Alexa and Hey Google, for unmatched convenience."
    },
    {
      "feature": "Whisper-Quiet Operation\nEnjoy peaceful and undisturbed surroundings as the LG LW1821ERSM window air conditioner operates at remarkably low sound levels as quiet as 52dB in low mode, making it perfect for creating serene sleep and work environments."
    },
    {
      "feature": "Customized Airflow\nWith 3 cooling and fan speeds combined with the Auto Cool feature, fine-tune the airflow of your LW1821ERSM to fit your specific requirements, ensuring personalized comfort at all times."
    },
    {
      "feature": "Energy-Saving Schedule\nCraft a tailored cooling schedule to cut down on energy expenses using the 24-hour on/off timer feature, offering proactive energy conservation without compromising on comfort."
    },
    {
      "feature": "Roomy Cooling Coverage\nThe LG LW1821ERSM is designed to effortlessly cool large rooms up to 1,000 sq ft (25' x 40'), making it the ideal choice for bedrooms, offices, or any spacious area seeking consistent cooling performance."
    },
    {
      "feature": "Voltage Requirement\nThis unit requires a special 230V electrical outlet and will not operate with a standard 115V outlet"
    }
  ],
  "condition": "New",
  "salePrice": 649.99,
  "categoryPath": [
    {
      "id": "cat00000",
      "name": "Best Buy"
    },
    {
      "id": "abcat0900000",
      "name": "Appliances"
    },
    {
      "id": "pcmcat302300050021",
      "name": "Heating, Cooling & Air Quality"
    },
    {
      "id": "abcat0907001",
      "name": "Air Conditioners"
    },
    {
      "id": "abcat0907005",
      "name": "Window Air Conditioners"
    }
  ],
  "manufacturer": "LG",
  "regularPrice": 649.99,
  "shippingCost": "",
  "longDescription": "Take control of your indoor climate with the LG LW1821ERSM Window Air Conditioner! Experience optimal cooling for large rooms up to 1,000 sq ft with 3 cooling and fan speeds, a 24-hour timer, and 4-way air deflection for complete customization. The unit's revolutionary LG ThinQ technology lets you cool your home remotely via your smartphone, Amazon Alexa, or Hey Google. This ultra-quiet, high-efficiency unit provides top-notch performance while consuming minimum power. Additional features include an automatic restart function after power outages, a remote control, an easy installation kit, a slide-out washable filter, and a check filter alert, ensuring effortless maintenance and a seamless cooling experience. (Please note: Requires a special 230V electrical outlet)",
  "shortDescription": null,
  "onlineAvailability": true,
  "inStoreAvailability": false
}
Newegg raw specs
No Newegg raw specs saved for this product yet.