10 Best Air Conditioners Air Conditioners 2025 in the United States

The BLACK+DECKER Smart Portable Air Conditioner with Heat is a versatile unit designed for rooms up to 700 sq. ft. Its cooling capacity is notable at 14,000 BTU ASHRAE (10,000 BTU DOE), making it suitable for large spaces. Additionally, it offers 12,000 BTU heating, which is great for year-round use. The unit stands out with its four-in-one functionality: air conditioning, heating, dehumidifying, and fan modes.

The Midea 12,000 BTU U Shaped Smart Inverter Window Air Conditioner is well-suited for cooling medium-sized rooms up to 550 square feet. Its cooling power is strong enough for typical living spaces, while the 15 SEER rating and ENERGY STAR certification reflect its energy efficiency, which promises more than 35% savings compared to older models. One standout feature is its ultra-quiet operation at just 32 decibels, thanks to the unique U-shaped design that fits into the window and blocks outside noise. This makes it great for bedrooms or offices where low noise is important. The smart inverter technology also helps keep electricity use in check. The unit offers smart controls via Wi-Fi and voice assistants like Alexa and Google Assistant, making it easy to adjust settings remotely. Another nice touch is the U-shaped design that allows you to keep your window open for fresh air and natural light while the AC runs, an uncommon feature in window air conditioners.

The Daikin 18,000 BTU Multi-Zone Mini Split is designed to cool and heat two separate rooms independently, making it a great choice if you want personalized comfort in different areas of your home. Its cooling capacity of 18,000 BTU (split as 9,000 BTU per zone) is suitable for spaces around 800 square feet, which fits well for medium-sized rooms or combined smaller rooms. The unit stands out with high energy efficiency, boasting a 21 SEER2 rating and using the eco-friendly R-32 refrigerant, which helps save on electricity while being better for the environment. Noise level is impressively low at just 24 decibels, so it operates quietly without disturbing your daily activities or sleep.