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 Daikin 9,000 BTU Entra Mini Split Heat Pump is a solid choice for anyone needing efficient cooling and heating in spaces up to around 350-400 square feet, such as small rooms, basements, or sunrooms. Its standout feature is its high energy efficiency with an 18 SEER2 rating, which means it uses less electricity than many standard air conditioners, helping keep utility bills lower. Additionally, it operates quietly at just 29 decibels, making it well-suited for bedrooms or workspaces where noise can be a distraction. This model is a ductless split system, which is great for places where adding ductwork is difficult or impossible. It comes with all the necessary installation parts, including refrigerant lines and a wall bracket, simplifying setup if you have professional help.

This Daikin 2-Zone CIRRA Series mini split air conditioner is designed to cool and heat two separate rooms efficiently, each with a 9,000 BTU capacity. Its cooling power is suitable for spaces up to around 800 square feet, making it a good choice for medium-sized homes or for targeting specific rooms like master bedrooms or living areas. The unit has a solid energy efficiency rating (SEER of 17), which means it will be relatively cost-effective to run compared to older or less efficient models. Noise-wise, it operates at around 51 decibels, which is about as loud as a quiet conversation, so it should be unobtrusive during use.