10 Best Smallest Mini Split Air Conditioner 2025 in the United States

The Senville LETO Series Mini Split Air Conditioner is a solid choice for anyone looking for an efficient cooling and heating solution for medium to large spaces, covering up to 1,000 square feet. With a cooling power of 18,000 BTU and a high SEER rating of 19, this mini-split is energy-efficient, which can help save on utility bills over time. Its noise level is impressively low at 30 dB, making it suitable for bedrooms or quiet environments. The 4-in-1 functionality allows it to not only cool but also heat, dehumidify, and circulate air, adding versatility to its use throughout the year.

A big plus is the smart features, including Alexa compatibility, which means you can control the unit via voice commands or an app, adding convenience to your daily life. The stylish design allows it to blend in well with home or business settings without looking out of place.

However, there are some considerations to keep in mind. The unit requires professional installation, which could add to the overall cost if you don’t have someone on hand. While the warranty covers parts and compressor for five years, labor isn’t included, which might lead to additional expenses if repairs are needed. Another point to note is that it’s not Energy Star compliant, which may be a drawback for those specifically seeking high efficiency credentials.

The YITAHOME 24000 BTU Mini Split Air Conditioner Heat Pump System offers powerful cooling and heating capabilities, suitable for spaces up to 1500 square feet, making it a solid choice for larger rooms or commercial areas. Its 18.5 SEER2 rating indicates good energy efficiency, potentially reducing electricity bills by 25%, and it's also Energy Star rated. The noise level is kept below 50 decibels, ensuring quiet operation, which is ideal for maintaining a peaceful environment.

This unit's versatility is enhanced with five operational modes (auto/cool/dry/heat/fan), WiFi compatibility, and Alexa integration, providing smart control options for convenience and comfort. Additionally, it includes features like automatic defrosting, self-diagnosis/cleaning, energy-saving mode, and air purification, making it a comprehensive system for maintaining indoor air quality and comfort throughout the year, even in extreme temperatures ranging from 5°F to 118°F.

The installation package is fairly complete, coming with both indoor and outdoor units, a multifunctional remote control, and additional mounting accessories. However, professional installation is required, which might add to the cost. The unit ships in two packages, which might arrive separately, potentially causing inconvenience. Despite these drawbacks, its performance, efficiency, and smart capabilities make it a strong contender in its category.

The Della Vario Series 9000 BTU mini split air conditioner is a solid choice for cooling and heating a small room up to 400 square feet. With a 19 SEER2 rating, it offers excellent energy efficiency, which can help reduce your electric bills compared to less efficient units. Its 9000 BTU cooling capacity fits well for bedrooms, small living areas, or offices. One of the standout features is its quiet operation at just 41 dB, so it won’t disturb your peace or sleep.

The built-in heat pump allows heating in cold weather down to -4°F, making it useful year-round. Smart features like Alexa and WiFi compatibility, along with multiple modes (sleep, turbo, eco), add convenience and personalized comfort. This mini split uses remote temperature sensing for better precision.

This unit requires professional installation with vacuuming and freon adjustments, which may add to upfront costs and complexity, so it’s less ideal if you want a quick DIY setup or need a quieter or smaller BTU option. It is well suited for those seeking a compact, energy-efficient mini split with smart controls and reliable heating.