10 Best Air Conditioners Air Conditioners 2025 in the United States

The Daikin 18,000 BTU LV Series mini-split air conditioner is a solid choice if you're looking to cool or heat a medium-sized space up to about 1,000 square feet. It offers strong cooling power at 18,000 BTUs and even better heating capacity with 21,600 BTUs, which makes it a flexible option for year-round comfort. One of its standout features is its high energy efficiency, rated at 19.5 SEER2 and 12.7 EER2, meaning it can save you money on electricity compared to less efficient models. The unit runs quietly at around 37 decibels, so it won’t disturb daily activities or sleep. As a ductless mini-split, it’s ideal for homes or rooms where installing ducts is difficult or unwanted, such as sunrooms, basements, or garages. It also comes with a useful 15-foot installation kit and remote control, simplifying setup and daily use.

Advanced features like the Intelligent Eye sensor adjust airflow based on room occupancy, and the built-in air purifying filter improves indoor air quality. On the downside, this model requires a 230V electrical setup and isn’t Energy Star certified, which might be a consideration if you want the highest eco ratings. Also, the initial cost and installation may be higher than window units, but the efficiency and comfort benefits can justify this. This Daikin unit is excellent for those wanting efficient, quiet, and versatile heating and cooling without ductwork, making it especially suitable for renovation projects or additional living spaces.

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.

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.

This system uses an inverter compressor, which adjusts power smoothly for both cooling and heating, improving comfort and efficiency throughout the year. Additional features like Wi-Fi control via an app or voice commands, air purification with a titanium filter, and automatic functions for humidity and diagnostics make it convenient and user-friendly. Installation kits and wall brackets are included for easier setup.

A notable point is that it is not Energy Star rated, so some other models might offer higher official energy certifications. Also, being a split system, professional installation is required, which can add to the cost. While it covers moderate cooling and heating needs well, very large homes or multiple bigger rooms might require a more powerful or additional unit. If you want a quiet, efficient, and flexible air conditioner that provides year-round comfort for two rooms without ductwork, this Daikin mini split is a solid option.