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Kenmore KM8K-R 8,000 BTU Window Air Conditioner vs Keystone 14,000 BTU Window Air Conditioner and

Updated July 2026 — Kenmore KM8K-R 8,000 BTU Window Air Conditioner wins on weight and power cord, Keystone 14,000 BTU Window Air Conditioner and wins on cooling btus and room size.

The Kenmore KM8K-R is a budget-friendly option for smaller spaces, while the Keystone 14 offers superior cooling and dehumidification for larger areas.

Why Kenmore KM8K-R 8,000 BTU Window Air Conditioner is better

Price

Kenmore is about 38% cheaper than Keystone.

Weight

Kenmore is lighter, making it easier to handle.

Energy Efficiency

Kenmore has a CEER rating of 10.9.

Why Keystone 14,000 BTU Window Air Conditioner and is better

Cooling Power

Keystone offers 14,000 BTUs compared to Kenmore's 8,000 BTUs.

Room Size

Keystone cools larger rooms up to 650 sq. ft.

Dehumidification

Keystone removes 2.1 pints of moisture per hour.

Overall score

Kenmore KM8K-R 8,000 BTU Window Air Conditioner
75
Keystone 14,000 BTU Window Air Conditioner and
85

Specifications

SpecKenmore KM8K-R 8,000 BTU Window Air ConditionerKeystone 14,000 BTU Window Air Conditioner and
Price$248.99$399.99
CEER Rating10.9N/A
DehumidificationN/A2.1 pints/hr
Remote ControlYesSmart
InstallationEasyEasy

Dimension comparison

Kenmore KM8K-R 8,000 BTU Window Air ConditionerKeystone 14,000 BTU Window Air Conditioner and

Overview of the Kenmore KM8K-R and Keystone 14

The Kenmore KM8K-R is priced at $248.99, while the Keystone 14 is available for $399.99. This makes the Kenmore about 38% cheaper than the Keystone, making it a more budget-friendly option for cooling needs. Both air conditioners are designed for different room sizes and offer unique features, making them suitable for various user requirements.

Cooling Capacity

The Kenmore KM8K-R offers 8,000 BTUs of cooling power, suitable for medium rooms up to 350 sq. ft. In contrast, the Keystone 14 boasts a higher cooling capacity of 14,000 BTUs, effectively cooling larger spaces up to 650 sq. ft. This significant difference in cooling capacity means that while the Kenmore is ideal for smaller bedrooms or home offices, the Keystone is better suited for larger living areas, garages, or apartments, ensuring that it can handle more demanding cooling tasks.

Energy Efficiency

In terms of energy efficiency, the Kenmore KM8K-R has a CEER rating of 10.9, which helps keep energy consumption and utility costs lower while providing effective cooling. The Keystone 14 also emphasizes energy savings with its Energy Saver and Sleep modes, but specific efficiency ratings are not provided. However, the Keystone's higher cooling power may lead to increased energy usage in larger spaces. Users looking for a balance between cooling power and energy efficiency might find the Kenmore's lower capacity more beneficial for smaller areas.

Features and Controls

The Kenmore KM8K-R includes several user-friendly features such as a digital display, remote control, and multiple operating modes, including Sleep, Auto, Eco, and Cooling modes. It also has three fan speeds for customizing airflow. On the other hand, the Keystone 14 not only offers similar cooling modes and three fan speeds, but it also features a smart remote control that measures the room’s temperature and adjusts the cooling accordingly. This advanced control may provide a better tailored cooling experience, especially in larger rooms where temperature variations can occur.

Dehumidification Capabilities

Dehumidification is another important aspect to consider. The Keystone 14 has an efficient dehumidification function that removes up to 2.1 pints of moisture from the air every hour, enhancing air quality and comfort in humid conditions. The Kenmore KM8K-R does not specify a dehumidification rate, which may be a drawback if you live in a particularly humid environment. For users prioritizing both cooling and humidity control, the Keystone might be the superior choice.

Installation and Maintenance

Both air conditioners are designed for easy installation. The Kenmore KM8K-R installs into standard windows with minimal structural changes and features a 4.9 ft. power cord for flexible placement. Its washable filter simplifies maintenance and improves air quality. Similarly, the Keystone 14 emphasizes user convenience with a washable filter and a check filter indicator that reminds you when it’s time for cleaning. This focus on low maintenance in both units can be a significant advantage for users looking for hassle-free operation.

Portability and Design

With a weight of 44.8 lbs., the Kenmore KM8K-R is compact enough for single-person setup and seasonal storage, making it a practical choice for those who may need to move or store the unit frequently. The Keystone 14, while powerful, does not specify its weight, which could affect portability. The sleek designs of both units are visually appealing and can fit well in most home decors, ensuring that they not only function well but also complement your living space.

Which should you buy?

Choosing between the Kenmore KM8K-R and the Keystone 14 largely depends on your specific cooling needs and budget. If you require an economical solution for smaller rooms, the Kenmore KM8K-R is about 38% cheaper and provides sufficient cooling for spaces up to 350 sq. ft. However, if you need to cool larger areas or prioritize dehumidification, the Keystone 14 offers greater cooling power and advanced features like a smart remote control at a higher price. Ultimately, your decision should be based on the size of the space you intend to cool and the specific features that matter most to you.