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 Energy Efficiency Ratio (EER) is relatively low at 6.2, suggesting that it may not be the most energy-efficient option available. This could lead to higher electricity bills over time, particularly with regular use. Noise levels are at a moderate 54 dB, which is comparable to a quiet conversation; this should be manageable for most users, but noise-sensitive individuals may want to take note. The portability of this unit is a significant advantage, allowing users to move it easily between rooms.

The smart features, including Wi-Fi connectivity and compatibility with Amazon Alexa and Google Assistant, offer convenient control options. The 'Follow Me' remote control enhances user experience by allowing precise temperature settings. An included installation kit simplifies the setup process, making it user-friendly. Weighing 35 pounds, it is reasonably easy to handle but might require some effort to move frequently. This BLACK+DECKER model is best suited for those looking for a multi-functional, portable air conditioning solution with smart features and who are less concerned about energy efficiency.

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.

The unit also offers multiple modes like ECO+ for saving energy, sleep mode, and self-diagnostics to catch issues early. Its wide operating temperature range means it can provide reliable cooling even in hot climates and heating when temperatures drop, making it useful year-round. On the downside, while the system covers moderate-sized areas well, it might not be enough for larger rooms or whole homes. Also, even though it includes an installation kit, proper setup usually requires a trained technician to handle refrigerant and electrical connections safely. Users should also consider the upfront cost, as mini splits tend to be more expensive than window units.

In summary, this Daikin model is ideal for those looking for a quiet, energy-efficient, and versatile ductless AC/heating solution for specific rooms or small spaces, with convenient features that enhance comfort and ease of use.

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.

It comes with useful features such as anti-corrosion treatment for durability, automatic defrosting to handle cold weather, an Eco+ mode for energy savings, and a quick warming function for heating needs. The system includes installation kits and mounting brackets, which is convenient for setup. Additionally, the unit is fairly heavy and requires 230 volts, so professional installation is recommended.

This mini split system suits homeowners needing flexible, zoned temperature control with reliable performance and modern features, though it might be less suitable if you want a very quiet or ultra-highly energy-rated option.