10 Best Ductless Air Conditioners 2025 in the United States

The Senville LETO Series Mini Split is a 24,000 BTU (2-ton) air conditioner and heat pump designed to cool or heat spaces up to about 1250 square feet. It has a strong SEER rating of 17, meaning it uses energy efficiently, which can help keep electricity bills lower compared to less efficient units. One of its notable strengths is the very quiet operation at just 34 dB, making it suitable for bedrooms or living rooms where low noise is important. This model supports Alexa voice control, allowing you to adjust settings easily from a phone or smart speaker, adding convenience.

It’s a versatile 4-in-1 system offering cooling, heating (effective even in colder weather down to 5°F), dehumidifying, and fan options, making it useful year-round. The product includes everything needed for installation except labor, but professional installation is required, which adds to upfront costs and complexity. The unit comes with a 5-year warranty on parts and compressor, which is reassuring. However, it only supports a single zone, so it’s best for cooling or heating one main area rather than multiple rooms. It is factory charged for refrigerant up to 25 feet of line set, good for typical setups but may require extra refrigerant for longer distances.

The design is sleek and modern, fitting well in homes or small businesses. On the downside, it’s imported from China, and while it’s AHRI certified and ETL listed, it doesn’t have a BEE star rating for energy efficiency compliance in some regions. This model is well suited for those who want a quiet, energy-efficient, versatile mini-split with smart features for a single room or open area, though buyers should be prepared for professional installation costs and limited multi-zone capability.

The Senville LETO Series Mini Split Air Conditioner Heat Pump is a solid choice if you're looking for a quiet and energy-efficient ductless cooling and heating solution for spaces up to around 400 square feet. It delivers 10,300 BTUs of cooling power, which is good for medium-sized rooms, and its SEER rating of 19 means it uses electricity efficiently, helping to keep energy bills lower compared to less efficient models. At just 25 decibels, it runs very quietly, so it won’t disturb your daily activities or sleep. This model is designed as a single-zone system, meaning it cools or heats one area at a time, making it ideal for bedrooms, living rooms, or small offices.

It includes everything needed for installation, but professional installation is required since it’s not a DIY unit. One standout feature is its smart home compatibility — it works with Alexa, so you can control temperature settings by voice or through an app, which adds convenience. The 4-in-1 functionality (cooling, heating, dehumidifying, and fan) means it’s useful year-round and in different weather conditions, including moderately cold temperatures.

A consideration is that it is not Energy Star certified, which might matter if you want the highest efficiency standards. Also, while the warranty covers parts and compressor for up to 5 years, labor is not included, so servicing costs might add up. This makes it a stylish, quiet, and capable mini split system well-suited for anyone wanting moderate-sized room climate control with smart features but who is comfortable arranging professional installation.

The BLACK+DECKER Portable Air Conditioner offers a cooling capacity of 9,000 BTU (5,300 BTU SACC), making it suitable for single rooms up to about 400 square feet, such as bedrooms or small living spaces. It features a 3-in-1 design, serving as an air conditioner, fan, and dehumidifier, which adds versatility especially in humid climates. The unit includes a handy "Follow Me" remote control that acts as a thermostat, allowing for more precise temperature management wherever you are in the room.

Mobility is a strong point thanks to its built-in casters and side handles, so you can easily move it between rooms without hassle. Installation is straightforward with the included window kit, designed for quick setup without permanent modifications. Its energy efficiency is moderate with a SEER rating of 6.2, which is lower than some modern ductless systems, meaning it may use more electricity over time. Noise level is around 52 decibels, which is generally acceptable but might be noticeable in very quiet environments.

The unit is designed for a single-zone cooling solution, so it won't be the best choice if you need to cool multiple rooms independently. Although it doesn’t have a high energy star rating, it balances functionality and convenience for those seeking a portable and easy-to-install air conditioner with multiple features. Its 1-year warranty offers basic coverage, but potential buyers should consider ongoing maintenance and energy costs. This BLACK+DECKER model suits users wanting a flexible, portable cooling option without the complexity of permanent ductless systems.