10 Best Two-Zone Mini Splits 2025 in the United States

The COSTWAY 18k Dual 2 Zone Mini Split AC is a solid choice if you want to cool or heat two different rooms independently, thanks to its two indoor units with 9000 BTU and 12000 BTU capacities. It operates efficiently with a high 22 SEER2 rating, meaning it can help save on electricity bills compared to older models. Its use of eco-friendly R32 refrigerant also reduces environmental impact.

The system offers six different modes and five fan speeds, so you can fine-tune comfort levels easily. Controlling the AC is convenient with both a smartphone app and a traditional remote, plus you can schedule temperature changes with its 24-hour timer. Noise is kept low, especially in sleep mode, which is great for bedrooms or quiet spaces. While installation requires a professional, the system is designed to handle a wide temperature range and is certified for safety and performance.

This unit is well suited for homeowners looking for an energy-efficient, quiet, and smart-controlled two-zone air conditioner with flexible cooling and heating for different rooms. Maintenance like cleaning filters requires some basic knowledge or help, as typical with mini split systems.

The DELLAR 18K BTU ODU 2 Dual Zone Mini Split Air Conditioner stands out for its energy efficiency and flexibility in cooling two separate rooms. With a BTU rating of 18,000 and a SEER rating of 20, it offers robust cooling and heating capabilities suitable for spaces up to 800 square feet. This makes it an excellent choice for homeowners wanting to manage temperatures in different rooms independently using the two included 9,000 BTU indoor units.

One of the product's strengths is its quiet operation at only 41 dBa, making it a great option for bedrooms or living areas where noise is a concern. Additionally, it features WiFi and Alexa compatibility, allowing for convenient remote control and smart home integration. The various modes, such as sleep and eco energy saving, enhance its usability by catering to different comfort needs.

There are a few drawbacks to consider. Professional installation is required, which may add to the cost and complexity if you're looking for a DIY solution. Also, while it has several advanced features, it does not support a self-cleaning function despite having that option on the display. Lastly, while it can operate in low temperatures, it’s recommended to ensure that the space does not drop below the unit's operating threshold for optimal performance.

The Senville 18000 BTU Dual Zone Mini Split Air Conditioner Heat Pump is well-suited for cooling and heating multiple rooms. With its 18000 BTU rating, it provides ample power for medium to large spaces, ensuring efficient climate control. The impressive SEER rating of 22.5 indicates high energy efficiency, potentially leading to significant energy savings over time. This model is also Alexa enabled, allowing for convenient voice or app control, which enhances usability and offers modern control options.

Moreover, the product includes multiple indoor air handlers and a single outdoor unit, providing installation flexibility for various room setups in both residential and commercial settings. Professional installation is required, which could add to the initial cost. Noise levels are not explicitly stated, but the unit is generally quiet. The unit is backed by a strong warranty, with 10 years on the compressor and 5 years on parts, adding to its reliability.

One potential drawback is the significant weight of 150 pounds, which could be challenging during installation. The Senville mini split system stands out for its energy efficiency, control options, and robust warranty, making it a solid choice for both home and business use.