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Item #:
230210968
Keystone 12,000 BTU Window Air Conditioner with 11,000 BTU Supplemental Heating and Dehumidification, 230V, Window AC Unit for Living Room,
76% of respondents would recommend this to a friend
Item #:
230210968
MWK 2479368
Price Details
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Order now and get it around Wednesday, September 16
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Invest in our heat/cool 230V window/wall air conditioner and enjoy year-round comfort for your family.
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What Stands Out
Heating & Cooling
This unit offers both 12,000 BTU cooling and 11,000 BTU supplemental heating, making it perfect for year-round comfort in medium-sized rooms up to 550 sq. ft.
Dehumidification
Equipped with a dehumidification function, it effectively reduces humidity levels, enhancing indoor air quality and comfort during hot summer months.
Energy Efficient
Designed with energy efficiency in mind, this air conditioner helps lower utility bills while providing powerful cooling and heating, ideal for budget-conscious consumers.
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 |
| Operating Mode | Cooling |
| Heating Capacity | 11,000 BTU |
| Number of Heating Elements | 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 |
| Form Factor | Window |
| Number Of Circuits | 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 |
Who Should Buy?
-
Medium-Sized Rooms
Ideal for cooling spaces up to 550 sq. ft., such as living rooms or larger apartments.
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Year-Round Use
Provides both cooling and supplemental heating, making it suitable for various seasons and climates.
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Humidity Control
Features dehumidification capabilities, which is beneficial for damp environments or areas with high humidity.
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Small Spaces
Inefficient for small rooms under 250 sq. ft. as it may cause excessive cooling and energy wastage.
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.
Have any Query? Chat with us
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 product presents a mixed experience, highlighting both its benefits and significant drawbacks. Many users appreciate the unit's dual functionality, providing both heating and cooling capabilities, making it an attractive option for those looking for a versatile appliance. It has been noted for its efficacy in rapidly heating and cooling spaces, which many users have found beneficial for specific applications, such as sheds or larger rooms. However, the reception is marred by concerns over the product's noise level and Construction quality. Several customers reported that the unit operates louder than expected, with some mentioning clanging sounds that suggest potential issues with durability. Additionally, multiple reviews cite problems with the installation process and the physical integrity of the product, such as broken panels and screws that were not properly secured. Issues with the heating performance have also been raised, with some users stating that the unit does not adequately warm spaces unless set to high temperatures. While some customers express satisfaction with their purchase, particularly those who have successfully utilized the unit for both heating and cooling, the dissatisfaction stemming from noise and quality control issues cannot be overlooked. **
Customer Reviews & Ratings
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Pros
- Provides both heating and cooling functions efficiently.
- Quick temperature adjustments, making spaces comfortable rapidly.
- Ideal for workshops and out buildings, not requiring floor space.
Cons
- Noise level complaints, including clanging sounds and general loudness.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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MWK 2479368
Order now and get it around Wednesday, September 16
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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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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