Home Air Conditioners Keystone 350 Sq. Ft. 8,000 BTU Casement Window Air Conditioner

Keystone - 350 Sq. Ft. 8,000 BTU Casement Window Air Conditioner - White

Price range: $334.99
Brand: Keystone
Category: Air Conditioner
A Keystone 8,000 BTU Window air conditioner for rooms up to 350 sq. ft. · 3 fan speeds · CEER 10.8.
PQS: 89 (computed 2026-03-19 07:15:25.785647+00:00)
GTIN-14: 00840148724174
Keystone - 350 Sq. Ft. 8,000 BTU Casement Window Air Conditioner - White

Key specs

A human-friendly subset of specs (non-null)
Type
Window
BTU
8,000
Room size
350 sq. ft.
Fan speeds
3
Filter
Mesh
Efficiency
CEER 10.8
Dimensions
20.87" H × 14.57" W × 23.5" D
Energy Star
No

Features

  • Remote control
  • Fan speeds: 3
  • CEER 10.8

Installation notes

  • Opening width: 15.5 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 6542238 334.99 USD In stock View offer → 2026-03-19 02:57:39.947570+00:00

Recent price history (50)

Retailer Price Stock Seen at
bestbuy 334.99 USD In stock 2026-03-19 02:57:39.947570+00:00
bestbuy 399.99 USD In stock 2026-03-18 03:05:14.316862+00:00
bestbuy 479.99 USD In stock 2026-03-17 03:08:07.646372+00:00
bestbuy 371.99 USD In stock 2026-03-16 03:05:42.110305+00:00
bestbuy 479.99 USD In stock 2026-03-15 02:55:37.759030+00:00
bestbuy 399.99 USD In stock 2026-03-14 02:58:37.770316+00:00
bestbuy 399.99 USD In stock 2026-03-13 03:08:09.184825+00:00
bestbuy 399.99 USD In stock 2026-03-12 02:59:04.799682+00:00
bestbuy 399.99 USD In stock 2026-03-11 02:57:16.072421+00:00
bestbuy 399.99 USD In stock 2026-03-10 03:06:28.858095+00:00
bestbuy 399.99 USD In stock 2026-03-09 03:06:20.961465+00:00
bestbuy 399.99 USD In stock 2026-03-06 06:17:02.962188+00:00
bestbuy 399.99 USD In stock 2026-03-03 02:07:15.206101+00:00
bestbuy 399.99 USD In stock 2026-03-02 08:17:45.319091+00:00

Full specs

Show full spec table
BTU8000
Room size (sq. ft.)350
Energy StarNo
TypeWindow
Smart/WiFiNo
Fan speeds3
FilterMesh
CEER/EER10.8
Dimensions20.87 x 14.57 x 23.5 in
Reconciled at2026-03-06 10:56:32.254648+00:00
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Canonical highlights (non-null)
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core.seo_title Keystone KSTSW08B
brand Keystone
model KSTSW08B
gtin14 00840148724174
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physical.depth_in 23.5
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appliance.btu 8000
appliance.ceer 10.8
appliance.type Window
appliance.smart False
appliance.finish White
appliance.fan_speeds 3
appliance.energy_star False
appliance.filter_type Mesh
appliance.dimensions_hwd 20.87 x 14.57 x 23.5 in
appliance.room_size_sqft 350
schema_version 1
BestBuy raw specs (pretty)
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Newegg raw specs
No Newegg raw specs saved for this product yet.