10 Best Mini Splits 2025 in the United States

The COSTWAY 12000 BTU mini split is a solid choice if you need a compact, energy-efficient unit to cool or heat a medium-sized room (up to about 750 square feet). Its 1-ton heat pump and 20 SEER rating mean it uses less electricity compared to many older models, helping keep energy bills lower. It offers five modes—including heating, cooling, dry, and fan—to suit different weather conditions year-round. The inverter technology helps maintain a steady temperature without constantly switching the compressor on and off, which saves power and extends the unit’s life. Noise is fairly low at around 51 decibels, so it won’t disturb a quiet room, and features like a remote control with a sleep timer add convenience.

The self-cleaning function and washable filter help maintain good air quality, while the auto-defrost feature protects the outdoor unit in cold weather. Installation requires a licensed professional and involves mounting the indoor and outdoor units separately. Some potential drawbacks are that it only supports a single zone, so it’s best for one main living area rather than multiple rooms. Also, the 115V power requirement may limit placement options depending on your home’s wiring.

With smart-like features such as iFEEL, which senses temperature around the remote, the unit still lacks full smart home integration. This mini split is well-suited for users who want dependable heating and cooling with a focus on energy savings and quiet operation in a single room setup.

The COSTWAY 11500 BTU mini split is a good choice for cooling and heating single zones up to about 750 square feet. With solid cooling and heating capacity, it works well even in extreme temperatures, allowing reliable use in both hot summers and cold winters. Its 17 SEER2 rating indicates it is quite energy efficient, partly thanks to the inverter technology and eco-friendly R-32 refrigerant, helping to keep electricity bills lower compared to less efficient units. The noise level is very low at 29 decibels, so it won’t disturb quiet time or sleep, which is a big plus for bedrooms or living rooms.

Installation requires a professional since it’s a split system, so it’s not a simple DIY job, but this is common for mini-splits. It also comes with smart features like Wi-Fi connectivity and compatibility with Alexa and Google Assistant, making controlling the unit easy and convenient from your phone or by voice commands. The unit offers multiple operating modes and fan speeds, adding flexibility to match your comfort needs. Its self-cleaning filter and washable design help keep maintenance straightforward.

The main downside is that it is a single-zone system, so if you want to cool or heat multiple rooms separately, additional units are needed. Also, while installation is included with a kit, hiring a licensed HVAC technician adds to the cost. This COSTWAY mini split is well suited for those looking for an efficient, quiet, and smart air conditioner and heater for a medium-sized single space.

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.