10 Best 1 Ton Mini Split Air Conditioners 2025 in the United States

The Senville LETO Series Mini Split Air Conditioner is a versatile option, offering both cooling and heating, making it suitable for year-round use. With a cooling capacity of 12000 BTUs, it effectively handles small to medium-sized spaces. One of its standout features is the high Seasonal Energy Efficiency Ratio (SEER) of 20.8, which means it is quite energy-efficient and should help reduce electricity bills.

The inclusion of Alexa compatibility allows for convenient voice control and app integration, which is a significant plus for those who enjoy smart home features. The unit is designed to be aesthetically pleasing, making it suitable for various settings, including homes, offices, and retail spaces. The comprehensive installation kit and pre-loaded refrigerant simplify the setup, although professional installation is required, which may add to the initial cost.

The 5-year warranty on parts and compressor provides good assurance of durability. The Senville LETO Series offers strong performance with modern smart features and a good warranty, but prospective buyers should consider the potential additional installation costs and lack of Energy Star certification.

The COSTWAY 12000 BTU Mini Split Air Conditioner & Heater is designed to cool and heat rooms up to about 750 square feet, making it a good fit for medium-sized living spaces. It has a strong cooling capacity of 1 ton and an impressive energy efficiency, with a high SEER2 rating of 20. This means it can help keep energy bills lower compared to less efficient units. Thanks to its inverter compressor technology, it adjusts power usage smoothly, reducing electricity waste and noise. Operating at 51 dB, it runs quietly enough to avoid disturbing typical home environments, especially during sleep.

The unit also features multiple operation modes, including auto, cool, dry, heat, and fan, plus convenient settings like sleep mode, ECO mode, and turbo function, which allow you to customize comfort year-round. It comes with a washable dust filter and a smart self-cleaning function to maintain air quality and unit performance over time. Installation requires a licensed HVAC professional, and the package includes all necessary components to set it up. The system supports remote control operation with a timer and an auto-off display to avoid light disturbance at night.

Another notable advantage is its use of environmentally friendlier R32 refrigerant, which is less harmful than older types. The product also stands out with a solid warranty: 5 years for parts and 8 years specifically for the compressor, providing confidence in its durability. The unit weighs 23 pounds and has dimensions that might require some wall space consideration. Being a split system, professional installation adds to initial costs. While the noise level is low, some users sensitive to sound might still notice it. Though the smart features are helpful, the unit lacks Wi-Fi connectivity or app control found in some competitors. This COSTWAY mini split suits users seeking a reliable, energy-efficient heating and cooling solution with strong warranty support and basic smart functions, ideal for those prioritizing quiet operation and eco-friendly refrigerants.

The DELLA Versa Series 12000 BTU Mini Split Air Conditioner offers substantial cooling and heating capacity, making it suitable for spaces up to 750 square feet. With a high SEER2 rating of 19, it is quite energy efficient, which means it should help you save on electricity bills. The unit also operates quietly, with noise levels between 30-41 dBa, making it a good choice for bedrooms and living spaces where noise can be a concern.

The air conditioner comes with various smart features, including compatibility with Alexa, auto defrost, self-cleaning, and multiple fan speeds, providing convenience and ease of use. Additionally, it includes a smart sensor to adjust airflow and temperature based on the room's current conditions, ensuring personalized comfort and enhanced energy savings. However, it is important to note that this system requires professional installation, which may add to the overall cost.

The installation kit is comprehensive, but any modification to the line-set length will necessitate adjusting the freon levels. The system is capable of functioning in very low temperatures, down to -4 degrees Fahrenheit, making it versatile for different climates. While it does not mention specific air filters, the product features dehumidification which can help improve indoor air quality. If you are looking for an efficient, quiet, and smart-controlled mini split air conditioner, the DELLA Versa Series could be a great choice but be prepared for the need for professional installation.