Home Air Conditioners Keystone 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat

Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White

Price range: $549.99
💰
High Brand Tax
Outperforms 36% of air_conditioners, but costs more than 65%.
$550 is 22% above the $450 category median.
Brand: Keystone
Category: Air Conditioner
A Keystone 8,000 BTU Window air conditioner for rooms up to 350 sq. ft. · inverter cooling · 3 fan speeds · CEER 0.
PQS: 87 (computed 2026-03-14 07:05:00.920932+00:00)
GTIN-14: 00840148724389
Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White

Key specs

A human-friendly subset of specs (non-null)
Type
Window
BTU
8,000
Room size
350 sq. ft.
Inverter
Yes
Fan speeds
3
Filter
Washable
Efficiency
CEER 0
Dimensions
13.9" H × 19.41" W × 22.17" D
Energy Star
No

Features

  • Inverter technology
  • Remote control
  • Fan speeds: 3
  • CEER 0

Installation notes

  • Opening width: 24 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 8000.0
34% Below avg
Room Coverage 350.0sqft
37% Below avg

Spec Profile Radar

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

Offers

Retailer SKU Price Stock Offer Last seen
Best Buy 6554578 549.99 USD In stock View offer → 2026-03-14 03:07:27.481209+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 549.99 USD In stock 2026-03-14 03:07:27.481209+00:00
bestbuy 549.99 USD In stock 2026-03-13 03:16:45.096713+00:00
bestbuy 549.99 USD In stock 2026-03-12 03:07:03.009188+00:00
bestbuy 549.99 USD In stock 2026-03-11 03:04:59.138932+00:00
bestbuy 549.99 USD In stock 2026-03-10 03:14:55.546004+00:00
bestbuy 549.99 USD In stock 2026-03-09 03:14:37.704261+00:00
bestbuy 549.99 USD In stock 2026-03-06 06:21:38.557665+00:00
bestbuy 549.99 USD In stock 2026-03-03 02:11:26.768893+00:00
bestbuy 549.99 USD In stock 2026-03-02 08:26:14.922253+00:00

Full specs

Show full spec table
BTU8000
Room size (sq. ft.)350
Energy StarNo
TypeWindow
Smart/WiFiNo
Fan speeds3
FilterWashable
CEER/EER0
Dimensions13.9 x 19.41 x 22.17 in
Reconciled at2026-03-06 10:56:32.254648+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": "Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White",
    "seo_title": "Keystone KSTAW08INV-HC"
  },
  "lens": {
    "mount": null,
    "weight": null,
    "focal_length": null,
    "max_aperture": null,
    "stabilization": null
  },
  "audio": {
    "driver": null,
    "wireless": null,
    "technology": null,
    "impedance_ohms": null,
    "speakers_count": null,
    "wireless_codecs": null,
    "hi_res_certified": null,
    "frequency_response": null
  },
  "brand": "Keystone",
  "build": {
    "screen_glass": null,
    "chassis_material": null
  },
  "color": null,
  "extra": {},
  "model": "KSTAW08INV-HC",
  "ports": {
    "hdmi": null,
    "usb_a": null,
    "usb_c": null,
    "sd_card": null,
    "summary": null,
    "ethernet": null,
    "sim_slot": null,
    "displayport": null,
    "thunderbolt": null,
    "headphone_jack": null
  },
  "power": {
    "psu_watts": null
  },
  "camera": {
    "mount": null,
    "sensor": null,
    "weight": null,
    "iso_range": null,
    "megapixels": null,
    "rear_megapixels": null,
    "front_megapixels": null,
    "video_resolution": null,
    "windows_hello_ir": null
  },
  "gtin14": "00840148724389",
  "images": [
    "https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/1b51c004-5c7f-49d5-a9bd-c3b352c44d1e.jpg"
  ],
  "memory": {
    "ram_gb": null,
    "channels": null,
    "ram_type": null,
    "speed_mhz": null
  },
  "series": null,
  "battery": {
    "life_hours": null,
    "capacity_wh": null,
    "capacity_mah": null
  },
  "display": {
    "panel_type": null,
    "resolution": null,
    "color_gamut": null,
    "hdr_formats": null,
    "touch_screen": null,
    "screen_size_in": null,
    "brightness_nits": null,
    "refresh_rate_hz": null,
    "response_time_ms": null,
    "pantone_validated": 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,
    "windows_ai": null,
    "form_factor": null,
    "software_perks": null,
    "backlit_keyboard": null,
    "convertible_2in1": null,
    "fingerprint_reader": null
  },
  "physical": {
    "depth_in": 22.17,
    "width_in": 19.41,
    "height_in": 13.9,
    "weight_kg": 25.38,
    "dimensions_in": "13.9 x 19.41 x 22.17 in"
  },
  "thermals": {
    "cooling_type": null,
    "thermal_interface": null
  },
  "warranty": {
    "labor": "1 Year",
    "parts": "1 Year"
  },
  "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": 8000,
    "eer": null,
    "ceer": "0",
    "type": "Window",
    "modes": null,
    "smart": false,
    "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": "Washable",
    "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": "13.9 x 19.41 x 22.17 in",
    "interior_light": null,
    "place_settings": null,
    "room_size_sqft": 350,
    "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,
    "cellular": 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
  },
  "certifications": {
    "energy_star": null,
    "epeat_level": null
  },
  "schema_version": 1
}
Debug data (expand)
Raw title Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White
Raw brandKeystone
Raw categoryBest Buy > Appliances > Heating, Cooling & Air Quality > Air Conditioners > Window Air Conditioners
Canonical highlights (non-null)
core.title Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White
core.seo_title Keystone KSTAW08INV-HC
brand Keystone
model KSTAW08INV-HC
gtin14 00840148724389
images[0] https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/1b51c004-5c7f-49d5-a9bd-c3b352c44d1e.jpg
category air_conditioner
physical.depth_in 22.17
physical.width_in 19.41
physical.height_in 13.9
physical.weight_kg 25.38
physical.dimensions_in 13.9 x 19.41 x 22.17 in
warranty.labor 1 Year
warranty.parts 1 Year
appliance.btu 8000
appliance.ceer 0
appliance.type Window
appliance.smart False
appliance.finish White
appliance.fan_speeds 3
appliance.energy_star False
appliance.filter_type Washable
appliance.dimensions_hwd 13.9 x 19.41 x 22.17 in
appliance.room_size_sqft 350
schema_version 1
BestBuy raw specs (pretty)
Expand BestBuy raw JSON
{
  "sku": 6554578,
  "upc": "840148724389",
  "url": "https://api.bestbuy.com/click/-/6554578/pdp",
  "name": "Keystone - 350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat - White",
  "image": "https://pisces.bbystatic.com/prescaled/500/500/image2/BestBuy_US/images/products/1b51c004-5c7f-49d5-a9bd-c3b352c44d1e.jpg",
  "details": [
    {
      "name": "Brand",
      "value": "Keystone",
      "values": [
        "Keystone"
      ]
    },
    {
      "name": "Model Number",
      "value": "KSTAW08INV-HC",
      "values": [
        "KSTAW08INV-HC"
      ]
    },
    {
      "name": "Product Name",
      "value": "350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat",
      "values": [
        "350 Sq. Ft 8,000 BTU Window Mounted Inverter Air Conditioner with 7,000 BTU Heater Supplemental Heat"
      ]
    },
    {
      "name": "Color",
      "value": "White",
      "values": [
        "White"
      ]
    },
    {
      "name": "Minimum Window Opening Height",
      "value": "14.5 inches",
      "values": [
        "14.5 inches"
      ]
    },
    {
      "name": "Minimum Window Opening Width",
      "value": "24 inches",
      "values": [
        "24 inches"
      ]
    },
    {
      "name": "Maximum Window Opening Height",
      "value": "14.5 inches",
      "values": [
        "14.5 inches"
      ]
    },
    {
      "name": "Maximum Window Opening Width",
      "value": "38.5 inches",
      "values": [
        "38.5 inches"
      ]
    },
    {
      "name": "Product Height",
      "value": "13.9 inches",
      "values": [
        "13.9 inches"
      ]
    },
    {
      "name": "Product Width",
      "value": "19.41 inches",
      "values": [
        "19.41 inches"
      ]
    },
    {
      "name": "Product Depth",
      "value": "22.17 inches",
      "values": [
        "22.17 inches"
      ]
    },
    {
      "name": "Product Weight",
      "value": "55.95 pounds",
      "values": [
        "55.95 pounds"
      ]
    },
    {
      "name": "Cord Length",
      "value": "78 inches",
      "values": [
        "78 inches"
      ]
    },
    {
      "name": "Recommended Room Size",
      "value": "350 square feet",
      "values": [
        "350 square feet"
      ]
    },
    {
      "name": "BTU Cooling Rating",
      "value": "8000 british thermal units",
      "values": [
        "8000 british thermal units"
      ]
    },
    {
      "name": "BTU Heat Rating",
      "value": "7000 british thermal units",
      "values": [
        "7000 british thermal units"
      ]
    },
    {
      "name": "Number of Cool Settings",
      "value": "1",
      "values": [
        "1"
      ]
    },
    {
      "name": "Number of Fan Speeds",
      "value": "3",
      "values": [
        "3"
      ]
    },
    {
      "name": "Airflow Rate",
      "value": "0 cubic feet per minute",
      "values": [
        "0 cubic feet per minute"
      ]
    },
    {
      "name": "Maximum Noise Level",
      "value": "54 decibels adjusted",
      "values": [
        "54 decibels adjusted"
      ]
    },
    {
      "name": "Minimum Noise Level",
      "value": "43 decibels adjusted",
      "values": [
        "43 decibels adjusted"
      ]
    },
    {
      "name": "Moisture Removal Capacity",
      "value": "26.4 pints per day",
      "values": [
        "26.4 pints per day"
      ]
    },
    {
      "name": "Remote Control",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Control Type",
      "value": "Touchpad",
      "values": [
        "Touchpad"
      ]
    },
    {
      "name": "Integrated Heater",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Filter Indicator Light(s)",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Filter Type",
      "value": "Washable",
      "values": [
        "Washable"
      ]
    },
    {
      "name": "Sleep Mode",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Timer",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Auto Shut-Off",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Energy Efficiency Ratio",
      "value": "0",
      "values": [
        "0"
      ]
    },
    {
      "name": "Combined Energy Efficiency Ratio (CEER)",
      "value": "0",
      "values": [
        "0"
      ]
    },
    {
      "name": "Amperage",
      "value": "8.66 amperes",
      "values": [
        "8.66 amperes"
      ]
    },
    {
      "name": "ENERGY STAR Certified",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "App Compatible",
      "value": "No",
      "values": [
        "No"
      ]
    },
    {
      "name": "Window Mounting Kit Included",
      "value": "Yes",
      "values": [
        "Yes"
      ]
    },
    {
      "name": "Air Conditioner Type",
      "value": "Window",
      "values": [
        "Window"
      ]
    },
    {
      "name": "Warranty - Parts",
      "value": "1 year",
      "values": [
        "1 year"
      ]
    },
    {
      "name": "Warranty - Labor",
      "value": "1 year",
      "values": [
        "1 year"
      ]
    }
  ],
  "features": [
    {
      "feature": "Powerful Cooling and Heating\nThis air conditioner boasts 8,000 BTUs of cooling power, 7,000 BTUs of heating power, and can dehumidify up to 1.1 pints per hour in rooms up to 350 sq. ft. Stay comfortable year-round in your home."
    },
    {
      "feature": "Efficient Supplemental Heating\nThe Supplemental Heating mode is designed for temperatures between 41 and 75 degrees, offering an additional heat source without relying on the main heating system. Keep warm on chilly days."
    },
    {
      "feature": "Advanced Inverter Technology\nSay goodbye to wasted operation with this unit's inverter technology, which optimizes motor speed for precise temperature control. Save energy and enjoy consistent cooling and heating."
    },
    {
      "feature": "Whisper-Quiet Operation\nExperience a peaceful environment with 24% quieter operation on low and 6% quieter on high settings. Enjoy the comfort of your home without any unnecessary noise disruptions."
    },
    {
      "feature": "Hassle-Free Installation\nEasily install this air conditioner in windows 14.5-inches tall and 24 to 38.5-inches wide. Enjoy a quick and seamless setup process with minimal effort."
    }
  ],
  "condition": "New",
  "salePrice": 549.99,
  "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": "Keystone",
  "regularPrice": 599.99,
  "shippingCost": "",
  "longDescription": "With reliable air conditioning units, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. This 8,000 BTU window-mounted air conditioner can effectively cool rooms up to 350 square feet with dehumidification up to 1.1 pints per hour to remove moisture from the air. A 7,000 BTU heat pump is also included for those chilly days. It features special Inverter technology to eliminate wasted operation in the air conditioner by controlling the motor speed to exactly the amount of power that is needed to keep the room at the desired temperature. A remote is included so you can control your cooling from across the room. Money saving features include energy saver mode, sleep mode, and a programmable 24-hour timer. You'll know when it's time to easily remove and clean the mesh filter with the Check Filter alert. Keystone not only provides a 1-year warranty but ensures that you stay cool and comfortable at a cost-conscious price.",
  "shortDescription": null,
  "onlineAvailability": true,
  "inStoreAvailability": true
}
Newegg raw specs
No Newegg raw specs saved for this product yet.