10 Best Wall Mounted Ductless Air Conditioning Units 2025 in the United States

The Senville LETO Series Mini Split Air Conditioner Heat Pump offers a solid 12,000 BTU cooling capacity, which is suitable for cooling or heating medium-sized rooms like bedrooms, living areas, or small offices. It has a high Seasonal Energy Efficiency Ratio (SEER) of 19 and a SEER2 rating of 20.8, meaning it uses energy efficiently and can help save on electricity bills compared to less efficient models. One notable feature is its Alexa compatibility, allowing you to control the unit with voice commands or a smartphone app—this adds convenience if you like smart home integration.

This unit is versatile, working as both an air conditioner and heat pump that can operate even in cold temperatures down to about 5°F (-15°C). It also includes dehumidification and a turbo mode for faster cooling or heating. Installation is mostly straightforward since it comes with an installation kit and pre-charged refrigerant, but professional installation is recommended to ensure proper setup.

The product is not Energy Star certified, which some buyers might consider when prioritizing greener options. The unit’s design is simple and clean in white, fitting well in most home or small business environments. It includes a 5-year warranty on parts and compressor, which offers good peace of mind for durability. This Senville model is a practical choice if you want a reasonably efficient, smart-enabled mini split that handles both cooling and heating for moderate spaces, with attention to installation requirements.

The Senville LETO Series Mini Split Air Conditioner Heat Pump offers a cooling capacity of 9000 BTU, suitable for spaces up to 400 square feet, making it ideal for bedrooms, living areas, and small commercial spaces. With a SEER2 rating of 21.5, it boasts excellent energy efficiency, promising lower electricity bills and environmental benefits. However, it is not Energy Star compliant, which might be a consideration for eco-conscious buyers. The unit operates quietly at 25 dB, ensuring minimal disruption, which is a significant advantage for a peaceful home environment or business setting.

Its Alexa-enabled feature allows for convenient remote control and voice commands, enhancing user experience through smart technology. The product includes a versatile 4-in-1 system functioning as an air conditioner, heat pump, dehumidifier, and fan, adaptable to all seasons and weather conditions down to 5F/-15C.

The included installation package, consisting of an indoor air handler, outdoor condenser, remote control, and 16 ft. line set, emphasizes ease of setup, but professional installation is required and not DIY-friendly, which could incur additional costs. The 5-year warranty on parts and compressor provides reassurance of durability and reliability, supported by technical assistance. Stylishly designed to fit residential and commercial aesthetics, the Senville LETO Series offers a balance of functionality and style, though the lack of labor warranty coverage is a drawback.

The COSTWAY 12000BTU Mini Split Air Conditioner & Heater is a solid choice for cooling and heating rooms up to about 750 square feet. Its cooling capacity of 12,000 BTU and 1-ton heat pump make it suitable for moderately sized spaces. The unit excels in energy efficiency with a high SEER rating of 20 and EER of 10, helping to keep electricity bills lower than many other models. Using inverter technology, it adjusts compressor speed to save power and operate quietly, with noise levels around 51 dB, which is fairly quiet but may still be noticeable in very quiet rooms like bedrooms.

It includes a washable dust filter and an automatic self-cleaning feature, which helps maintain good air quality with less frequent manual cleaning. The AC also offers useful modes such as auto, cool, dry, heat, fan, and specialized modes like ECO and turbo to suit different comfort needs. Controls are user-friendly via remote control with a timer and sleep mode, making the unit easy to operate.

Installation requires a licensed HVAC professional due to its split system design and refrigerant handling, which adds to initial setup complexity and cost. The unit uses R32 refrigerant, which is more environmentally friendly than older types. Given its solid performance and energy savings, this unit is best suited for users looking for a long-term, efficient solution and who don’t mind professional installation. For those wanting a reliable model with versatile functions for year-round comfort and reasonable noise, this product is a practical option.