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BLACK+DECKER Window Air Conditioner 12000 BTU, AC vs Keystone 5,000 BTU Window Air Conditioner and

Updated July 2026 — BLACK+DECKER Window Air Conditioner 12000 BTU, AC wins on price and cooling area, Keystone 5,000 BTU Window Air Conditioner and wins on sales rank and noise level.

The BLACK+DECKER Window Air Conditioner is the superior choice for larger spaces and advanced features, while the Keystone is a budget-friendly option for smaller rooms.

Why BLACK+DECKER Window Air Conditioner 12000 BTU, AC is better

Cooling Capacity

12,000 BTUs vs 5,000 BTUs

Energy Efficiency

Uses R32 refrigerant

Features

More advanced remote control features

Why Keystone 5,000 BTU Window Air Conditioner and is better

Price

$309.99 vs $349.99

Noise Level

Quieter operation at 52 dB

Size Suitability

Ideal for small rooms up to 150 sq. ft.

Overall score

BLACK+DECKER Window Air Conditioner 12000 BTU, AC
85
Keystone 5,000 BTU Window Air Conditioner and
70

Specifications

SpecBLACK+DECKER Window Air Conditioner 12000 BTU, ACKeystone 5,000 BTU Window Air Conditioner and
Cooling BTUs12,0005,000
Room SizeUp to 550 sq. ft.Up to 150 sq. ft.
Energy SaverYesYes
Remote ControlFull FunctionSmart Control
InstallationEasy with panelsStandard

Dimension comparison

BLACK+DECKER Window Air Conditioner 12000 BTU, ACKeystone 5,000 BTU Window Air Conditioner and

Cooling Capacity

The BLACK+DECKER Window Air Conditioner has a cooling capacity of 12,000 BTUs, while the Keystone offers a significantly lower capacity of 5,000 BTUs. This means the BLACK+DECKER unit is designed to cool larger spaces, specifically up to 550 square feet, compared to the Keystone's maximum coverage of 150 square feet. For users with larger rooms such as master bedrooms or living areas, the BLACK+DECKER is substantially more effective.

Energy Efficiency

Both units are designed with energy conservation in mind, but the BLACK+DECKER has an edge due to its use of R32 refrigerant, which has zero impact on the ozone layer. While the Keystone also promotes energy savings through its 'Energy Saver' and 'Sleep' modes, specific energy efficiency ratings or costs savings are not provided. However, it is clear the BLACK+DECKER unit, with its larger cooling capacity, may justify its higher price of $349.99 as it can handle bigger spaces more efficiently.

Noise Levels

The Keystone operates quietly with a noise level of 52 dB, making it ideal for bedrooms or nurseries. In contrast, the BLACK+DECKER does not specify its noise rating. However, the quieter operation of the Keystone is a vital feature for those needing a peaceful environment for sleeping or working. If noise is a primary concern, the Keystone may be the preferable choice.

Features and Functionality

The BLACK+DECKER unit boasts a full-function remote control that includes features like a sleep mode, energy saver, and a 24-hour timer, offering flexibility and convenience. The Keystone also includes a remote control that displays the room temperature and adjusts for optimal comfort, but it lacks some of the advanced settings found in the BLACK+DECKER. Ultimately, if advanced features are a priority, the BLACK+DECKER offers more functionality.

Installation Process

Both air conditioners are designed for easy installation, but the BLACK+DECKER unit specifically mentions its accordion-style side panels, making it adaptable for standard double-hung windows. While the Keystone does not provide specific installation details, it is generally understood that window units are designed for straightforward setup. Thus, the BLACK+DECKER may provide a more user-friendly experience for those less experienced with installation.

Price Comparison

The BLACK+DECKER Window Air Conditioner is priced at $349.99, while the Keystone comes in at a more budget-friendly $309.99. This means the BLACK+DECKER is about 13% more expensive. However, considering the significant difference in cooling capacity and features, the price difference may be justified for consumers needing a more powerful unit. The Keystone is a more economical choice for smaller spaces.

Sales Rank

In terms of market performance, the BLACK+DECKER unit has a sales rank of 52,698, indicating it is relatively popular among consumers. In contrast, the Keystone has a higher sales rank of 174,779, suggesting it may not be as frequently purchased. This difference in sales rank could reflect consumer preference for the BLACK+DECKER's higher capacity and features, making it a more trusted choice among buyers.

Which should you buy?

Deciding between the BLACK+DECKER Window Air Conditioner and the Keystone largely depends on your specific cooling needs. If you require a unit that can efficiently cool larger spaces and offers advanced features, the BLACK+DECKER, despite being priced higher at $349.99, is the better option. However, if you are looking for a budget-friendly solution for smaller rooms, the Keystone at $309.99 provides adequate cooling and quiet operation. Ultimately, your choice should be based on the size of the area you need to cool and the features that matter most to you.