Outlet EventEnds Jan. 19. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

No content
  • Front. Keystone - Keystone 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Angle Zoom. Keystone - 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Left Zoom. Keystone - 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Alt View 11. Keystone - Keystone 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Alt View 12. Keystone - Keystone 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Alt View Zoom 13. Keystone - 350 sq ft Slider/Casement Window Air Conditioner - White.
  • Alt View Zoom 14. Keystone - 350 sq ft Slider/Casement Window Air Conditioner - White.

Keystone - 350 sq ft Slider/Casement Window Air Conditioner - White

Model:
KSTSW08A
SKU:
6421575
Your price for this item is $509.99

Customer reviews

Rating 4.8 out of 5 stars with 9 reviews

Rating Filter

Pros mentioned filter

Cons mentioned filter

89%
would recommend
to a friend

Customers are saying

Customers appreciate the Keystone 350 sq ft Slider/Casement Window Air Conditioner's excellent cooling performance. Many users report that it effectively cools their living spaces, even larger rooms, and provides amazing results. There were no negative customer comments reported.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 1 Showing 1-9 of 9 reviews
  • Pros mentioned:
    Cooling performance

    Window A/C

    |
    |
    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Have used this over the past few years, absolutely amazing

    I would recommend this to a friend

  • Yes and no on if it’s worth it

    |
    |
    Posted . Owned for more than 2 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It does it’s job well, came slightly with a few dinks on the back, that’s the senders fault tho or manufacture. And it’s not that durable easily breaks apart

    No, I would not recommend this to a friend
  • Pros mentioned:
    Cooling performance

    Good Ac bad bracket

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This A/C keeps most of my ranch home cool. My issue is with the bracket that comes with it. If you don't have this titled exactly how the instructions say even within a half degree, the compressor won't turn on. It took a little bit, but we got it right.

    I would recommend this to a friend

  • A c. For window.

    |
    |
    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works fine ..zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

    I would recommend this to a friend

  • Great ac

    |
    |
    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Prefect for thise narrow windows i would recommend this over a floor ac. The 500 square ft floor ac does not cool like this does.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling performance

    My new ac

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Very nice fit in my attic side window.the ac is very cool and efficient for my large room.

    I would recommend this to a friend

  • Keystone casement AC great choice

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My central AC unit went out in July and was not repaired for 3 days. I needed a window unit to cover me if that happened again. My windows in the din are 15" wide so required a casement window unit. This unit got high reviews and Best Buy had it in stock. It works great and gives me great piece of mind that I now have a backup if my main unit goes out.

    I would recommend this to a friend
  • Pros mentioned:
    Cooling performance

    LOVE it

    |
    |
    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    works great! it cools our room perfectly in our small duplex bedroom. would definitely recommend

    I would recommend this to a friend

  • Excellent product!

    |
    |
    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    best purchased yet! Very happy with this product,

    I would recommend this to a friend
Page 1, Showing 1-9 of 9 reviews

  • Customer reviews from Sampling program

    See all Sampling program reviews
Sponsored

People also viewed

  • TCL - 250 Sq. Ft. 6,000 BTU Window Air Conditioner - White
    Your price for this item is $219.99
  • Whirlpool - 550 Sq. Ft. 12,000 BTU Window Air Conditioner - White
    Your price for this item is $346.99
    The comparable value for this item is $429.99
  • LG - 14,000 BTU Smart Window Air Conditioner 700 Sq. Ft - White
    Your price for this item is $498.99
    The comparable value for this item is $549.99
  • LG - 23,500 BTU DUAL Inverter 230V Smart Window Air Conditioner - White
    Your price for this item is $638.99
    The comparable value for this item is $699.00
  • LG - 6,000 BTU 115V Window Air Conditioner with Remote Control - White
    Your price for this item is $185.99
    The comparable value for this item is $229.00