10 Best Mini Splits 2025 in the United States

The COSTWAY 12000 BTU mini split is a solid choice for heating and cooling single rooms up to about 750 square feet. Its BTU rating suits medium-sized spaces well, providing comfort from 60℉ cooling up to 90℉ heating. One of its strong points is energy efficiency, with a high 22 SEER2 and 9 HSPF2 rating, meaning it uses electricity wisely, which can lower your utility bills. It also uses the eco-friendly R32 refrigerant. Noise while running is fairly low at 42 decibels, roughly the sound of a quiet conversation, so it won’t be disruptive. The system is designed for single-zone use, ideal if you want to control temperature in one specific area.

Installation must be done by a licensed HVAC professional, which is important to know since it’s not a simple DIY setup. Controls are flexible and modern, allowing use via remote, smartphone app, or voice commands with Alexa and Google Assistant, making it convenient to adjust settings. Extra features like a 24-hour timer, multiple fan speeds, 4-way air swing for even cooling, and a self-cleaning function help keep the system running smoothly and efficiently.

The unit comes with a strong warranty covering parts for 5 years and the compressor for 8 years, providing good long-term support. While 42 dB is quiet for a mini split, it’s not the absolute quietest available if silent operation is a priority. Also, this is a single-zone system, so if you want to control multiple rooms separately, you’d need additional units. This COSTWAY mini split is a great option for someone who needs an energy-efficient, moderately quiet, and smartly controlled heating and cooling solution for one medium-sized room.

The Senville LETO Series Mini Split is a solid choice if you're looking to cool or heat a space around 1,250 square feet. It delivers 24,500 BTU, which means it has strong cooling and heating power suitable for medium to larger rooms or multiple connected areas (zones). It comes with a good energy efficiency rating (SEER 17), helping reduce electricity bills compared to less efficient units. The noise level is quite low at 34 decibels, so it won't disturb your daily activities or sleep.

This model is versatile, offering cooling, heating down to 5°F (which covers most mild winters), a dehumidifier, fan, and a turbo mode for quick temperature changes. A standout feature is its Alexa compatibility, allowing you to control it through voice commands or a smartphone app for convenience. Installation requires a professional since it comes with a complete kit but no DIY setup instructions, and the unit includes a 16-foot copper line set pre-loaded with refrigerant.

The warranty covers parts and compressor for 5 years, providing peace of mind, though labor costs aren't included. One drawback is that it’s not rated under the BEE Star program, which might matter in some regions focused on strict energy standards. While it supports two tons of capacity, it’s designed generally for single-zone setups unless you install multiple units. This mini-split is a stylish and efficient option for homes or small businesses seeking quiet, reliable climate control with smart features.

The Senville 28000 BTU Dual Zone Mini Split is a strong choice if you need efficient cooling and heating for about 1500 square feet, like in a home with two separate rooms or small business spaces. It offers dual zones with individual temperature controls, so you can set different climates in two rooms, which is great for comfort and energy savings. This model has a high SEER rating of 23, meaning it's very energy efficient and can help keep electricity bills lower than less efficient units. It also runs quietly at just 24 dB, so it won’t disturb your daily activities or sleep. Installation is a split system, which usually requires professional help, but this setup is typical for mini-splits and allows flexible placement of indoor units.

The unit includes heating capability and can operate in very cold temperatures, down to -22°F, making it useful year-round in colder climates. Being Alexa-enabled adds convenience by allowing voice or app control, including scheduling to save energy when you're away. It’s backed by a solid warranty (10 years on the compressor), showing confidence in durability.

One limitation is that while it supports two zones, if you need cooling or heating for more rooms, you might want a system with more zones. The initial cost and installation complexity can be higher than window units or portable ACs, but you get better performance and efficiency. If you want a quiet, smart, and efficient dual-zone mini-split with good heating for cold weather, this Senville fits well.