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Item #:
241588856
Keystone 12,000 BTU Window Air Conditioner with 11,000 BTU Supplemental Heating and Dehumidification, 230V, Window AC Unit for Living Room,
Item #:
241588856
XAF 340275
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Product Details
| Cooling Power | 12000 tbritish thermal units |
| Additional Features | 4 Way Swing, Dehumidifier, Filter Light Reminder, Heating & Cooling Function, Remote Controlled |
| Color | Bright White |
| Noise | 55 db |
| Refrigerant | R-32 |
| Filter Type | Washable |
| Inverter Type | No Inverter |
| Installation Type | Window |
| Compressor Type | rotary_scroll or rotary_vane |
| Air Conditioner Application | Residential |
| Core Material | Aluminium Alloy |
| Voltage | 230 volts |
| Power Source | Corded Electric |
| Wattage | 3450 watts |
| Seasonal Energy Efficiency Ratio (SEER) | 10.9 |
| Annual Energy Consumption | 3450 watts |
| Air Flow Efficiency | 279 cubic_feet_per_minute_per_watt |
| Control Method | Remote, Touch |
| Controller Type | Remote Control |
| Number of Power Levels | 3 |
| Form Factor | Window |
| Number Of Circuits | 1 |
| Brand Name | Keystone |
| Start Year | 2023 |
| Model Name | Keystone Air Conditioner |
| Model Number | KSTHW12B |
| Unit Count | 1 Count |
| Included Components | ac, remote, batteries, mesh air filter, window installation kit |
| UPC | 840148726765 |
| Manufacturer | Keystone |
| Item Type Name | Keystone 12,000 BTU Window Air Conditioner with 11,000 BTU Heating |
| Item Dimensions D x W x H | 18.98"D x 21.46"W x 14.65"H (48.2 x 54.5 x 37.2 cm) |
| Item Weight | 71.7 pounds (32.52 kg) |
| Window Opening Maximum Width | 36 inches (91.4 cm) |
| Window Opening Minimum Height | 18.98 inches (48.2 cm) |
| Window Opening Minimum Width | 23 inches (58.4 cm) |
| Window Opening Maximum Height | 36 inches (91.4 cm) |
| Capacity | 2.5 pints |
| Floor Area | 550 square_feet |
| Room Type | Bedroom, Living Room |
| Heating Capacity | 11,000 BTU |
| Number of Heating Elements | 1 |
| Brand | Keystone |
| Special Feature | 4 Way Swing, Dehumidifier, Filter Light Reminder, Heating & Cooling Function, Remote Controlled |
| Product Dimensions (L x W x H) | 18.98"D x 21.46"W x 14.65"H (48.2 x 54.5 x 37.2 cm) |
| Start year | 2023 |
| Noise Level | 55 db |
Product Description
Keystone 12,000 BTU Window Air Conditioner with 11,000 BTU Supplemental Heating and Dehumidification, 230V, Window AC Unit for Living Room, Apartment, Medium Sized Rooms up to 550 Sq.Ft. | 11,000 BTU Supplemental Heating, Dehumidification, 230V for Living Room, Apartment, Medium Sized Rooms up to 550 Sq.Ft.
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Customer Questions & Answers
-
Question:
Can this unit be used as a primary heat source?
Answer: No, it is meant as a supplemental heat source only for temperatures above 23 degrees Fahrenheit. -
Question:
What type of electrical outlet is required?
Answer: This unit requires a special 230-volt/20-amp electrical outlet and will not operate with a standard 115V outlet. -
Question:
How large of a room can this air conditioner cool effectively?
Answer: It can efficiently cool spaces up to 550 sq. ft.
Keystone Window KSTHW12B Editorial Review
**** The customer reception of this unit has been highly polarized, reflecting a mix of satisfaction and frustration among users. Many customers appreciate the dual-functionality of the unit, highlighting its ability to heat and cool spaces efficiently. Positive reviews particularly commend its quick heating capabilities, making it a great solution for those transitioning between seasons, especially for areas with only electric heating options. However, a significant number of customers have reported dissatisfaction due to several recurring issues. Notably, noise levels have emerged as a major concern, with multiple users describing the unit as excessively loud and disruptive. One user even detailed a clanging noise that detracted from their overall experience. Additionally, there are worries regarding its heating capacity, with some stating it does not effectively warm larger spaces and requires higher temperature settings. Installation experiences have also varied, with some finding the process straightforward while others encountered issues like broken components and insecurity in the panel that were overlooked during setup. The remote control functionality has generally been praised, but others have expressed frustration over the unit’s operational reliability, reporting difficulties in turning the unit off and on. In summary, while the dual heating and cooling features are appreciated by many, concerns regarding noise, heating efficiency, and build quality have led to dissatisfaction for other customers. The challenge of achieving a balance between functionality and user experience remains evident across reviews. **
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Pros
- Dual-functionality (heating and cooling) is convenient.
- Quick heating capability for larger spaces.
- Generally easy installation.
- Effective cooling performance when functioning properly.
- Remote control operates reliably.
Cons
- Excessive noise complaints detracting from user experience.
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23 July 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XAF 340275
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Features & Benefits
- Provides cooling and supplemental heating for year-round comfort.
- Budget-friendly with energy saver, sleep mode, and programmable timer.
- Remote control for convenient temperature management.
- Efficiently covers large spaces up to 550 sq. ft. with 12,000 BTU cooling.
- Versatile installation options suitable for windows or walls.
- Designed to lower energy usage and costs for families.
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