10 Best Energy Star Portable Air Conditioner 2026 in the United States

The BLACK+DECKER Portable Air Conditioner boasts a cooling capacity of 9,000 BTU (ASHRAE) or 5,300 BTU (DOE), making it suitable for rooms up to 400 sq. ft. It also functions as a dehumidifier and fan, adding versatility. The unit's Energy Efficiency Ratio (EER) is relatively low at 5.4, which means it may not be the most energy-efficient option available.

Its portability is a strong point, with casters and side handles making it easy to move between rooms. The noise level is 54 dB, which is moderate and may be noticeable but not overly disruptive. The 'Follow Me' remote control is a convenient feature that allows for precise temperature control by acting as a thermostat. Additionally, the easy-to-install window kit simplifies setup. Maintenance is straightforward with a reusable filter.

However, at 52.9 pounds, it is on the heavier side for a portable unit. This air conditioner is best suited for those looking for a versatile, portable solution for medium-sized rooms, who don't mind a bit of noise and are okay with a lower energy efficiency rating.

The Whynter Inverter Portable Air Conditioner offers a robust 14,000 BTU of cooling power, making it suitable for cooling spaces up to 600 square feet effectively. Its inverter technology stands out by providing 20% more efficient cooling, which can be beneficial for energy savings. The dual-hose design is particularly efficient in preventing heat leakage, further enhancing its cooling performance.

The unit also doubles as a powerful dehumidifier, capable of removing up to 87 pints of moisture per day, which is great for humid climates. This model offers smart control through the NetHome Plus app, allowing you to adjust settings via WiFi, and is compatible with voice assistants like Alexa and Google Home, adding to its convenience. User-friendliness is boosted by its washable air filter, which simplifies maintenance, and the inclusion of a programmable timer and remote control for ease of use.

The unit operates quietly at a noise level of 42.5 dB, which is relatively quiet for its class. The product dimensions are 16.75 inches deep, 19.5 inches wide, and 32.5 inches high, so ensure you have adequate space for it. The Whynter Inverter Portable Air Conditioner is a powerful and versatile unit with smart features and efficient cooling capabilities, making it a strong choice for larger rooms.

The LG 10,000 BTU Smart Portable Air Conditioner is a solid choice for cooling medium-sized rooms up to about 450 square feet, such as living rooms or bedrooms. With a respectable cooling power, it effectively handles heat while also offering a dehumidification mode to reduce moisture, which is great for damp days. Energy-wise, its Seasonal Energy Efficiency Ratio (SEER) of 7.8 is decent, helping to keep electricity use reasonable, though not the highest in its class. The unit operates at around 50 decibels, which is about the noise level of a quiet conversation, so it won’t be overly disruptive.

It includes helpful smart features like WiFi control via LG ThinQ, and compatibility with voice assistants such as Alexa and Google Assistant, allowing you to adjust settings remotely or by voice commands, adding convenience. The digital control panel and remote control make manual operation straightforward. Portability is typical for this size of AC, but at 76 pounds, it’s somewhat heavy, so moving it around might require some effort despite being designed as portable. Filter maintenance is easy, contributing to cleaner air and better performance.

The unit has only two fan speeds, which limits airflow customization compared to some competitors. The product offers a 1-year warranty, which is standard, but buyers looking for extended coverage might want to consider that. This LG portable air conditioner is well-suited for users wanting reliable cooling with smart home integration and simple controls, especially if they prioritize moderate energy efficiency and quiet operation. However, its weight and limited fan speed options may be less ideal for those needing frequent moves or finer airflow control.