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 LG 10,000 BTU portable air conditioner is designed to cool medium to large rooms up to about 450 square feet, making it a solid choice for spaces like basements, attics, or single rooms in a home. Its cooling power of 10,000 BTU provides effective temperature control, and it also offers dehumidifying and fan-only modes, which add versatility beyond simple cooling. With a noise level of 53 decibels, it runs quietly enough for most living spaces, though it might be noticeable in very quiet environments. The unit is portable, so you can move it between rooms, and it comes with a window installation kit that helps with setup and storage.

The Midea Duo Portable Air Conditioner offers strong cooling power with 14,000 BTU, suitable for rooms up to 550 square feet, making it a good fit for medium to larger spaces. It features an innovative dual hose design that improves air circulation by using one hose to intake and another to exhaust air, which helps the unit cool more efficiently and prevents hot air from leaking back in. Thanks to inverter technology, it runs more energy-efficiently than many traditional portable ACs, potentially saving about 40% on electricity. Noise levels are fairly low at around 42 dB, which is about as quiet as a library, so it won’t be too disruptive in your living space.