10 Best Air Conditioners 2025 in the United States

The BLACK+DECKER Smart Portable Air Conditioner with Heat offers a solid cooling capacity of 14,000 BTU ASHRAE (10,000 BTU DOE), which is suitable for rooms up to 700 sq. ft. This makes it a good fit for medium to large-sized rooms. Additionally, it has a 12,000 BTU heating capacity, allowing it to be used year-round. The unit functions as a dehumidifier and fan, adding to its versatility.

The energy efficiency ratio (SEER) of 6.2 is relatively low, indicating higher energy consumption compared to more efficient models. It's important to note that this model is not Energy Star rated, which means it might not be the most cost-effective option over time for energy savings. The noise level is 54 dB, which is moderate and may be noticeable in quieter environments but should be acceptable for most users. The air conditioner is portable, making it easy to move around as needed.

Additional features include smart connectivity with Wi-Fi, app control, and voice commands via Amazon Alexa or Google Assistant, which add convenience. The 'Follow Me' remote control is another useful feature, allowing for more precise temperature control. The product includes an easy-to-install window kit for setup. Weighing 35 pounds and having compact dimensions, it should be manageable for most people to handle. Assembly is required, which might be a minor inconvenience for some users. This BLACK+DECKER unit is a versatile and convenient option, especially for those looking for a portable and smart-controlled air conditioner with heating capabilities, despite its higher energy consumption.

The Senville LETO Series Mini Split Air Conditioner Heat Pump offers a substantial cooling capacity of 12,000 BTU, making it suitable for cooling medium-sized rooms. One of its standout features is the high Seasonal Energy Efficiency Ratio (SEER) of 20.8, which indicates it operates efficiently and could help reduce electricity bills. The inclusion of a DC Inverter further enhances its energy efficiency and performance consistency.

This model supports voice control through Alexa, allowing for convenient adjustments via app or voice commands from anywhere, which could be appealing to tech-savvy users or those who enjoy smart home integration. Additionally, it serves multiple roles as an air conditioner, heat pump, dehumidifier, and fan, making it versatile for year-round use. The unit operates relatively quietly, which is ideal for bedrooms and living areas where noise can be disruptive.

It does require professional installation, which might add to the initial cost. Although it comes with a comprehensive 5-year warranty on parts and the compressor, labor costs for installation are not covered. The product does not meet Energy Star compliance, which might be a consideration for eco-conscious buyers. Its compact and stylish design allows it to blend into both residential and commercial settings without compromising aesthetics. The package includes necessary installation components, making it convenient, but the pre-loaded refrigerant accommodates only up to 25 ft, which could limit installation flexibility in larger spaces.

The Senville LETO Series Mini Split Air Conditioner offers 9,000 BTU of cooling power, suitable for rooms up to around 400 square feet, making it ideal for bedrooms, small living areas, or modest commercial spaces. It features an inverter heat pump, providing efficient cooling and heating even in temperatures as low as 5°F (-15°C). A notable feature is its Alexa compatibility, enabling easy voice or app control, which adds convenience for smart home use.

With a SEER (Seasonal Energy Efficiency Ratio) of 19, it delivers reasonable energy efficiency, although it is not Energy Star certified, so it may not offer the highest energy savings compared to some other models. The unit operates quietly at about 25 decibels, making it suitable for quiet environments like bedrooms or offices. Installation requires professional assistance, but the package includes all necessary components and a 16-foot pre-charged line set, simplifying the installation process for professionals.

The product comes with a 5-year warranty on the compressor and 2 years on parts, providing solid reliability assurance. While the lack of Energy Star certification and the need for professional installation may be drawbacks for some buyers, the Senville LETO’s multi-functionality, quiet operation, and smart features make it a compelling choice for those seeking a versatile mini split system for year-round comfort.