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Keystone 18,800 BTU Window-Wall Air Conditioner with 16,000 BTU Supplemental Heating, 230V, Window and Wall AC Unit for Living Room, Apartment, Large Rooms up to 1000 Sq.Ft.

  • Based on 334 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Friday, Jun 20
Order within 21 hours and 18 minutes
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Size: 18000 BTU


Style: 230V


Color: Bright White


Features

  • Reliable Window AC Units: Our powerful 18,000 BTU cooling capacity / 16,000 BTU supplemental heating capacity window air conditioners can efficiently provide comfort all year long for any large space up to 1,000 Sq.Ft.
  • All in One Window Unit Air Conditioners: Enjoy cooling, supplemental heating, dehumidification, and fan circulation; Supplemental Heating mode is meant to be operated when temperatures outside are between 23 and 76 degrees; Mode is supplemental and NOT meant as primary heat source
  • Smart Remote: The I Sense remote takes the temperature of the room you are in, displays it on the remote's LCD screen and sends a signal to your window air conditioner with remote control every 3 minutes for accurate cooling
  • Powerful Cooling on a Budget: Our High Efficiency air conditioner window unit will give your electric bill a break by using the 'Energy Saver' or 'Sleep' mode
  • Space Saving Design: Save your floor space with this air conditioner for windows; Window installation kit included

Description

With reliable air conditioning, Keystone produces consistent cooling to keep you comfortable, even on the hottest days. Whether installed in a window or through-the-wall, this 18,000 BTU / 16,000 BTU supplemental heating capacity air conditioning unit can effectively cool rooms up to 1000 square feet with dehumidification up to 3.8 pints per hour. Supplemental Heating mode is meant to be operated when temperatures outside are between 23 and 76 degrees. This mode is supplemental and NOT meant as a primary heat source. The unit features a unique remote with a thermostat built in to sense the temperature of the room, displays it on the remote's LCD screen, and sends a signal to your AC unit every 3 minutes for accurate cooling. You'll know when it's time to 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 at a cost- conscious price. For wall installation, you can use an existing compatible wall sleeve or purchase one separately. Wall sleeve not included with unit. It is important to have a special 230-volt/25-amp electrical outlet for optimal operation, as this unit does not function with standard 115V household outlets.

Brand: Keystone


Capacity: 3.8 Pints


Cooling Power: 18800 British Thermal Units


Special Feature: Remote Controlled, Filter Light Reminder, Heating And Cooling Function, 4 Way Swing, Dehumidifier


Product Dimensions: 25.39"D x 23.62"W x 17.91"H


BEE Star Rating: No


Start year: 2023


Seasonal Energy Efficiency Ratio (SEER): 10.7


Color: Bright White


Voltage: 230 Volts


Product Dimensions: 25.39 x 23.62 x 17.91 inches


Item Weight: 117.3 pounds


Manufacturer: Keystone


Country of Origin: China


Item model number: KSTHW18B


Form Factor: Window/Wall


Warranty Description: 1-year parts and labor, plus additional 4 years for sealed system


Batteries required: No


Included Components: ac, remote, batteries, mesh air filter, window installation kit


Capacity: 3.8 Pints


Floor Area: 1000 Square Feet


Voltage: 230 Volts


Noise Level: 55 dB


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jun 20

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

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Uses 6-30 NEMA plug!
Size: 18000 BTU Style: 230V Color: Bright White
This product is excellent, it works very well! I bought this to replace my old Keystone air conditioner which was 17,700 BTU. It was really easy to install because it uses the same cage-type frame, so all I had to do was pull out the old one and slide this one in. One thing that I would note is that because this product offers heating, this uses a 6-30 NEMA plug instead of the 6-15 NEMA plug that these types of air conditioners normally use. I had to replace my outlet to accommodate this, but if you don't have an available 30amp breaker, this could end up being a big problem. Definitely something to consider, but the product works well and I definitely recommend it! ... show more
Reviewed in the United States on June 8, 2025 by Miranda Miranda

  • Performance
Size: 23200 BTU Style: 230V Color: Bright White
Great air conditioner works as it should. Very efficient as well..highly recommend
Reviewed in the United States on June 11, 2025 by Kelsey Simon

  • Too complicated
Size: 23200 BTU Style: 230V Color: Bright White
I cannot get it assembled. The screws do not fit so that the side panels can be installed. At this point, it is an overpriced perch for my cats to lay on
Reviewed in the United States on May 27, 2025 by AnCo

  • Works great
Size: 18000 BTU Style: 230V Color: Bright White
This kept my house warm and the electric bill average this past winter. I’m looking forward to seeing how well it cools this summer. Overall, I am very pleased with it.
Reviewed in the United States on March 16, 2025 by Gidget Leonard

  • GOOD
Size: 18000 BTU Style: 230V Color: Bright White
HEATS WELL - HAVEN'T USED A/C - VENT DOESN'T MOVE DOWN ONLY UP. DON'T LIKE MINE IS IN MIDDLE OF WALL AND VENT WON'T TILT DOWN. NOT AS QUIET AS I WOULD LIKE BUT OK
Reviewed in the United States on January 23, 2025 by LISA

  • Window air conditioner
Size: 18000 BTU Style: 230V Color: Bright White
The function is great so far overall satisfied with product. Purchase for rental which has been over year and have one for myself has been functioning for about 3 years now with no issues yet. The efficiency shut off time is great. noise level is normal no loud noise.
Reviewed in the United States on February 6, 2025 by Leslie Grindstaff

  • Damaged
Size: 23200 BTU Style: 230V Color: Bright White
I just got this in and the box was damaged, the unit has a bent place on it and some of the fins in the front and back grills is messed up. I haven’t been able to try it yet to see if it works properly.
Reviewed in the United States on March 15, 2025 by Melissa Sweat Melissa Sweat

  • Best AC and Heater
Size: 23200 BTU Style: 230V Color: Bright White
I bought two of them. One for the store and one for my home. Reasons I bought them are because central air at my home and at the store broke down. Frequent repair costs are high and never resolved. This device works well at the store and at my home. It is highly recommended, very quiet and very powerful when generating heat or cold air. ... show more
Reviewed in the United States on December 12, 2024 by Henry

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