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Keystone

Keystone 8,000 BTU Slider Window Air Conditioner and Dehumidifier, 115V Air Conditioner Window Unit for Bedroom, Living Room, and Small-Medium Sized Rooms up to 350 Sq.Ft., 4-Way Air Direction Control

  • Based on 86 reviews
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Returnable until Jan 31, 2025

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Size: 8000 BTU


Color: Bright White


Features

  • Convenient Cooling: This Keystone slider window air conditioner fits your standard sliding and casement windows; It is rated 8,000 BTUs and best used in a room up to 350 square feet
  • Maximum Comfort: Featuring 3 cooling modes, 3 fan speeds, 4-way adjustable air louvers and a programmable timer; Aside from cooling, 0.9 liters of moisture from the air is removed every hour with the built-in dehumidification system
  • Control Your Comfort: 4-way air direction control allows you to direct the air where you need it most for optimal comfort
  • Powerful Cooling on a Budget: Our window air conditioner will give your electric bill a break by using the 'Energy Saver' or 'Sleep' mode; These features automatically program your unit to use less energy
  • Easy to Use: Designed with a removable chassis so you can install it either in a window or through an exterior wall; An adjustable window kit is included for convenient installation; Minimum window height: 21.3"; Minimum to Maximum window width: 15.5" to 16.3"

Description

Experience superior comfort with the Keystone 8,000 BTU slider/casement window air conditioner, specifically designed for homes with horizontal slider or casement windows. This cutting-edge unit offers efficient cooling for rooms up to 350 sq. ft, boasting 3 fan speeds and a 4-way air direction control to help quickly cool your room or maintain comfort where needed. Plus, with built-in dehumidification capabilities of up to 0.9 liters per hour, you can say goodbye to excess moisture in your home and enjoy optimal comfort all summer long. The washable filter is highly-efficient in removing dust and odors, ensuring your indoor air quality is healthy and clean. Additionally, the built-in filter indicator lets you know when it's time to clean. You can also enjoy uninterrupted sleep with the quiet sleep mode, while the programmable timer assures that the unit cools your home during the hottest parts of the day. The energy saver mode is designed to minimize energy consumption without compromising performance, providing you with cost-effective cooling solutions. Lightweight and portable, the Keystone 8,000 BTU slider/casement window AC unit is a must-have appliance for anyone who wants to enjoy a comfortable, cool home this summer.

Brand: KEYSTONE


Capacity: 0.9 Liters


Cooling Power: 8000 British Thermal Units


Special Feature: Dehumidifier, Fast Cooling


Product Dimensions: 23.5"D x 14.57"W x 20.87"H


Energy Star: 1 Star


Start year: 2022


Seasonal Energy Efficiency Ratio (SEER): 10.8


Color: Bright White


Voltage: 115 Volts


Product Dimensions: 23.5 x 14.57 x 20.87 inches


Item Weight: 73 pounds


Manufacturer: Keystone


Country of Origin: China


Item model number: KSTSW08B


Specific instructions for use: Indoor Cooling


Form Factor: Cassette


Warranty Description: 1-year limited parts and labor


Batteries required: Yes


Included Components: Air Conditioner, Manual, Warranty, Window Installation Kit, Filter, Remote, AAA batteries


Capacity: 0.9 Liters


Floor Area: 350 Square Feet


Voltage: 115 Volts


Noise Level: 57 dB


Frequently asked questions

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Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

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View our full returns policy here.

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Top Amazon Reviews

    • Like heaven
Size: 8000 BTU Color: Bright White
This saved us this summer! It fits perfectly in a sliding window and includes a spacer to fill any remaining window space. It easily cools our 14x20ft bedroom and the hallway if the door is open.
Reviewed in the United States on October 1, 2024 by KT
    • Took a chance on this unit and glad I did!!
Size: 8000 BTU Color: White
I had bought another Keystone model for my bedroom and have been very pleased with how well it maintains a set temperature AND how well it dehumidifies. Lack of dehumidification has been my number one complaint with casement window A/Cs, including (and especially) the most popular brand. I hate having to run a dehumidifier in addition to a window A/C. I needed a replacement casement A/C for my mother's apartment., which (like mine) can only take A/C's that are less than 17" wide. Even though Keystone doesn't publish its noise ratings, I decided to take a chance based on reviews reporting that the unit is quiet. I was amazed that the unit is so quiet you can barely hear it!!!! Fabulous!!! (Keystone - please publish the noise decibel levels!!) Updated - now that we've had some hot humid days. The unit really does dehumidify the room. Outstanding! It's also been consistently quiet, because the fan isn't horribly noisy like the other casement A/C's I've owned. Example: the one I'm running right now, the fan is somewhere around 70-75 dB, despite the manufacturer's claim of 52 dB. I think they either outright make those numbers up, or they report the sound level from 20 feet away or something. Or maybe from the next state. Negatives - first, the Eco mode doesn't work well. It allows the temperature to fluctuate way too much. Second negative is that the large slats on the sides of the outdoor part of the unit need to be protected with screens. Something blew in there, maybe during a rainstorm, and there was a nasty buzzing sound when the compressor was on for a few days. It's gone now. Knocked off a star for energy efficiency, because as happy as I am with this unit, an ER under 11 is frankly ridiculous in the modern era, and at this price point. Come on guys...build a modern casement A/C will ya??? Use inverter technology, get the noise down below 40 dB and ER up to 15, and I'll be forever grateful. ... show more
Reviewed in the United States on June 9, 2023 by Cathy
    • Powerful little air conditioner
Size: 10000 BTU Color: Bright White
Never had AC until this summer. Temps were crazy high so we thought we'd try this one. Cooled down the dining room and living room really well. No complaints. It's heavy so.if you're not strong (even if you are) you should probably get someone to help you put it in.
Reviewed in the United States on August 15, 2024 by Cbear
    • Don't buy if you don't have to.
Size: 8000 BTU Color: White
Like many other reviews have said; for as much money as this is I would have expected it to work better. But when this is the only air conditioner I could find to fit my 15" window, then I suppose they can be as crappy as they want bc what other options there...
Reviewed in the United States on August 30, 2024 by Marci
    • So far, it’s awesome!
Size: 8000 BTU Color: White
Review Image by Jonathan Cusack Jonathan Cusack
Review Image by Jonathan Cusack Jonathan Cusack
Review Image by Jonathan Cusack Jonathan Cusack
I placed the order earlier in the week because it is way too hot for my preference here, and my home didn’t have an AC so I bit the bullet and decided to buy this one. This window unit was delivered three days early (which was the day after ordering), so I was super happy about that! I was able to set it up on my own, and I’ve never done anything similar before so the fact even I could understand and follow the instructions was definitely something! Add in the fact that I didn’t even need to call someone for help with lifting or clarifying anything, this could be handled by just about anyone IMO. Installation took at most a couple of hours and that included opening the box and unpacking everything, reading through instructions entirely before starting, taking breaks during installation because it was HOT in here that day, and keeping my cats away from the open window. I got it set up and plugged in and it cooled my unit down within a couple hours. It’s been the perfect temperature, easy to manage the controls on, and overall I’m super pleased with my experience so far! My place is on the smaller side with some weird windows (most of the big ones slide sideways, the one big one that slides up and down is in the bathroom at the end, and the other up and down sliding ones are too small for anything at all to fit) so I was pleased to find a unit that worked with that. It doesn’t stick too far inside so I’m able to have it in the window above the couch just fine. Noise level isn’t too bad either considering it’s taking the air from 84 to 68. I can’t complain at all! I love it and my cats love it. ... show more
Reviewed in the United States on July 23, 2022 by Jonathan Cusack Jonathan Cusack
    • Cools well!
Size: 8000 BTU Color: Bright White
This unit is pretty big and a little heavy. The mounting hardware for the unit was not the most robust materials so I developed my own system. Unfortunately, the unit had some damage (probably from the delivery) to the plastic and the metal in the front. Normally I would have sent it back but it was Phoenix in July and my bedroom mini split had died. Overall it did a good job at cooling 300-400 square feet in the Phoenix heat this summer. It’s a little noisy but I sleep with earplugs anyway. ... show more
Reviewed in the United States on September 26, 2024 by Vector
    • Should have done my research
Size: 8000 BTU Color: Bright White
It doesn't tell you in the listing that it's operating range is up to 109 degrees. The day I installed it hit 118degrees and it barely cooled but I am stuck with it now. It might work OK in a cooler climate but I wouldn't recommend it for the Phoenix area.
Reviewed in the United States on September 9, 2024 by Juice
    • Sent a used damaged unit.
Size: 10000 BTU Color: Bright White
Used unit arrived damaged. You could tell it was a used return as the packaging was incorrect and completely damaged and the unit itself had scratches on the bottom indicating that it had been slid against another surface. The front panel would not fit due to damage, internal insulation was cracked. Packed up for return. ... show more
Reviewed in the United States on July 22, 2024 by Curtis Gomez

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