2 Best Keystone Air Conditioners 2025 in the United States

The Keystone 14,000 BTU Wall Mounted Air Conditioner is well-suited for large rooms up to 700 square feet. Its cooling capacity ensures effective temperature regulation during hot months, while the 10,600 BTU supplemental heating capacity provides some warmth when it's cooler outside, though it's not intended to replace primary heating systems. The dehumidifier function adds to its versatility, making it a useful year-round appliance.

However, it requires a specific 230V/20-amp outlet, which might be a limitation for some users. The unit operates relatively quietly at 61.5 dB, which is manageable but not the quietest on the market. The included remote control enhances convenience by measuring room temperature and adjusting settings accordingly. Energy-efficient modes like 'Energy Saver' and 'Sleep' can help reduce electricity costs, though it's worth noting that the unit does not have an Energy Star rating.

The Seasonal Energy Efficiency Ratio (SEER) of 9.3 indicates moderate efficiency but may not be the most cost-effective over time compared to higher-rated units. The unit's bright white color and compact, wall-mounted design allow it to blend into most living spaces without obstructing window views or taking up floor space. It also comes with a 1-year parts and labor warranty, plus an additional 4 years for the sealed system, providing some peace of mind. Potential buyers should weigh the need for a special electrical outlet and the moderate energy efficiency against its robust cooling and supplemental heating capabilities.

The Keystone 13,000 BTU Portable Air Conditioner (model KSTAP13MFHC) offers several attractive features, making it a versatile option for rooms up to 450 square feet. With its 4-in-1 functionality, you can use it to cool, heat, fan, and dehumidify the space, ensuring year-round comfort. The unit has a cooling capacity of 13,000 BTU according to the ASHRAE standard and 8,000 BTU as per the DOE standard, which is decent for medium-sized rooms. Additionally, the dehumidification rate of 2.9 pints per hour helps to maintain a comfortable indoor environment, especially in humid conditions.

Its portability is a strong point, along with the included remote control and window venting kit, which adds to the convenience of setup and use. However, the energy efficiency ratio (EER) of 7.2 is relatively low, which means it might not be the most energy-efficient option available. This could potentially lead to higher electricity costs over time. Moreover, the noise level of 52 dB might be noticeable, especially if used in quieter settings like bedrooms or small offices.

The unit is not Energy Star certified, which might be a consideration for eco-conscious buyers. Weighing 76.1 pounds, it might be somewhat cumbersome to move around frequently despite being labeled as portable. Users should weigh these pros and cons to determine if it aligns with their specific needs and preferences.