10 Best Inverter Split System Air Conditioner 2025 in the United States

The MRCOOL DIY 24K BTU mini-split air conditioner is designed for cooling spaces up to about 1,000 square feet, making it suitable for medium-sized rooms or small apartments. Its cooling capacity of 24,000 BTU (2 tons) is strong enough to handle warmer climates or larger open areas. The unit is Energy Star certified with a high efficiency rating of 20.5 SEER, enabling it to use electricity efficiently to keep energy bills lower while providing effective cooling.

One of the standout features is its quiet operation at 33 decibels, ensuring it won’t disturb daily activities or sleep. The system includes smart controls, allowing temperature management via smartphone for added convenience. Additionally, it features leakage detection to alert you if the coolant is low, protecting the compressor and maintaining performance.

Installation is designed to be DIY-friendly with pre-charged quick connect linesets, so it can be installed without specialized tools or professional help, potentially saving on installation costs. The unit operates well in low ambient temperatures down to 5 degrees, providing cooling even in cooler weather conditions. This mini-split is an excellent choice for those seeking efficient, quiet, and smart cooling with a relatively easy installation process, especially suited for homeowners comfortable with a hands-on approach and remote control capabilities.

The Senville LETO Series Mini Split is a solid choice for those looking to cool and heat spaces up to around 1,000 square feet comfortably. With an 18,000 BTU cooling capacity and 1.5-ton size, it offers strong performance for medium-sized rooms. Its SEER rating of 19 indicates good energy efficiency, helping reduce electricity bills compared to less efficient models, although it does not have an Energy Star certification. Noise levels are quite low at 30 dB, making it a quiet option suitable for bedrooms or living areas. This mini split stands out with smart features, including Alexa compatibility, allowing you to control the system with your voice or smartphone, which adds convenience for everyday use.

It also functions year-round with air conditioning, heating down to -15°C (5°F), a dehumidifier, fan, and a turbo mode for quick temperature adjustments. The package comes with everything needed for installation, such as the indoor unit, outdoor condenser, remote control, and tubing, but professional installation is required, which adds to upfront costs. The design is simple and white, blending easily into most home or business environments without drawing attention. Warranty coverage is strong, offering 5 years on the compressor and parts, which provides peace of mind for durability and support.

On the downside, it lacks Energy Star certification, so it may not be the best pick if you prioritize maximum energy savings or eco-friendliness. Also, while it supports smart home integration, it might require a stable Wi-Fi connection, which could be a limitation in some settings. This model delivers a good balance of quiet, efficient cooling and heating with helpful smart features, making it particularly suitable for homeowners or small business owners who want comfort combined with modern controls.

The MRCOOL Easy Pro 24,000 BTU ductless mini-split air conditioner heat pump is a solid choice for cooling and heating spaces up to about 1,050 square feet, making it well suited for medium-sized rooms or open layouts. Its 24,000 BTU capacity is strong enough to keep a comfortable temperature throughout the year, and it operates quietly at around 43 decibels, so it won’t disturb daily activities or sleep. An appealing feature is the smart WiFi control, which lets you adjust settings remotely using apps or voice assistants like Google Assistant and Alexa, adding convenience for modern homes. Installation is designed to be DIY-friendly, which can save on professional costs and reduce setup hassle.

The unit has a 2-star energy efficiency rating, meaning it may not be the most energy-saving option available, potentially leading to higher electricity bills compared to higher-rated models. Maintenance seems straightforward due to its accessible design but always consider regular filter cleaning to keep performance optimal.

This MRCOOL unit offers a balance of power, quietness, easy installation, and smart features, though if energy efficiency or specific airflow performance is a top priority, there may be better alternatives.