10 Best Ductless Mini Split Systems 2026 in the United States

The MrCool DIY 36k BTU 5th Generation ductless mini split offers strong cooling and heating power suitable for medium to large rooms, with a 36,000 BTU capacity that can cover spaces up to about 1,500 square feet. It features excellent energy efficiency, with a high SEER rating of 23.6 and HSPF of 11.5, which can help reduce energy bills throughout the year. The system is designed for easy installation without professional help, avoiding costly setup fees, and comes as a complete package including indoor and outdoor units plus all necessary installation hardware.

Noise-wise, it operates at about 43 decibels, which is fairly quiet but not the absolute quietest on the market, something to consider if you want virtually silent operation in bedrooms or study areas. This model supports a single zone, ideal if you need to cool or heat one main area rather than multiple rooms independently. The 1-year labor warranty is helpful but somewhat limited compared to other brands that may offer longer coverage.

If you are looking for a user-friendly, energy-efficient mini split for a single-zone space and value DIY installation, this MrCool model fits well. For those needing multi-zone control or ultra-quiet operation, other options might serve better.

The Senville 36000 BTU Tri Zone Mini Split is a solid choice for anyone needing to cool or heat multiple rooms individually, thanks to its three separate air handlers managed by one outdoor unit. With a strong 36,000 BTU capacity and a 3-ton rating, it’s powerful enough for medium to larger homes or small commercial spaces. Its high SEER rating of 22.5 means it is energy-efficient, helping you save on electricity bills compared to less efficient models. The unit's Arctic Heat Pump is designed to perform well in very cold temperatures, down to -22°F, which is great if you live in a chilly climate.

One of the standout features is compatibility with Alexa, allowing voice control and remote management, which can also contribute to energy savings when you’re away. The system comes with a comprehensive installation kit, but professional installation is required—not a DIY job—which might add to upfront costs but ensures proper setup and warranty coverage. A 5-year parts and 10-year compressor warranty offers reasonable peace of mind.

This mini split is ideal for users who want a reliable, energy-efficient, multi-zone system with smart controls, provided they are comfortable with professional installation and can confirm noise expectations.

The Senville LETO Series Mini Split Air Conditioner Heat Pump offers a range of features making it a versatile option for controlling indoor climates. With a BTU capacity of 9,000, it is suitable for spaces up to 400 square feet, making it ideal for bedrooms, small living areas, and some commercial spaces. Key highlights include a high SEER rating of 21.5, which ensures energy efficiency, and a noise level of 25 dB, ensuring quiet operation.

The unit's compatibility with Alexa allows for easy voice control and integration with smart home systems, enhancing convenience and ease of use. Additionally, the 4-in-1 functionality includes air conditioning, a heat pump, a dehumidifier, and a fan, providing comprehensive climate control year-round. The included installation kit and 5-year warranty on parts and the compressor offer added value, although professional installation is required, which may incur additional costs.

One downside is its non-compliance with Energy Star standards, which might be a consideration for those particularly focused on energy savings. Moreover, while it has a solid build and design, the absence of DIY installation could be a drawback for some users. The Senville LETO Series provides a well-rounded solution with advanced features, particularly for those looking for a smart, quiet, and efficient mini split system.