Choosing the right mini split air conditioner can transform your home’s comfort year-round by providing efficient cooling and heating without ductwork. This article reviews some of the best mini split AC units available on Amazon, highlighting their features, energy efficiency, and suitability for different room sizes. Below is a summary table of the selected top products for quick comparison.
| Product | Cooling Capacity | Energy Efficiency | Heating Included | Control Features | Approx. Coverage |
|---|---|---|---|---|---|
| COSTWAY 12000BTU Mini Split | 12000 BTU | 20 SEER2 | Yes, Heat Pump | Remote, Timer, iFEEL | Up to 750 sq. ft. |
| ROVSUN 9000 BTU Wifi Mini Split | 9000 BTU | 19 SEER2 | Yes, Heat Pump | WiFi, Remote, Timer | Up to 400 sq. ft. |
| DELLA Vario Series 12000 BTU | 12000 BTU | 19 SEER2 | Yes, Heat Pump | Alexa Compatible, Remote | Up to 550 sq. ft. |
| Manastin 12000BTU Mini Split | 12000 BTU | 17 SEER2 | Yes, Heat Pump | Remote, Multiple Modes | Up to 750 sq. ft. |
| hykolity 12000 BTU Wifi Mini Split | 12000 BTU | 19 SEER2 | Yes, Heat Pump | WiFi, Remote, Timer | Up to 750 sq. ft. |
Content Navigation
- COSTWAY 12000BTU Mini Split Air Conditioner & Heater
- ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
- DELLA Vario Series 12000 BTU Mini Split Air Conditioner with Alexa
- Manastin 12000BTU Mini Split Air Conditioner & Heater
- hykolity WiFi Enabled 12,000 BTU Mini Split Air Conditioner & Heater
- Buying Guide for Mini Split Air Conditioners
COSTWAY 12000BTU Mini Split Air Conditioner & Heater

The COSTWAY 12000BTU Mini Split is a versatile ductless unit designed for rooms up to 750 square feet. It features a high-power compressor combined with a 1-ton heat pump, enabling both cooling and heating functions throughout the year. Its inverter technology adjusts the compressor’s frequency to conserve energy and extend the system’s lifespan.
This unit offers five operating modes: auto, cool, dry, heat, and fan, with four fan speeds allowing you to customize airflow. Additional functions include sleep, ECO, iFEEL sensor for personalized temperature control, turbo for rapid cooling/heating, and a quiet operation mode enhanced by a timer. The remote control with a display screen makes ease of use convenient.
ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater

The ROVSUN 9000 BTU Mini Split is an efficient cooling and heating system suitable for spaces up to 400 sq. ft. Its inverter technology boasts a 19 SEER rating and intelligently adjusts compressor speed for optimal energy savings—up to 35%. The unit covers a wide temperature range and includes a dedicated dehumidification mode.
Equipped with WiFi control and designed for quiet operation with a 28 dB noise level, this mini split is perfect for bedrooms and offices requiring peaceful environments. It comes with an installation kit and supports broad residential and light commercial applications.
DELLA Vario Series 12000 BTU Mini Split Air Conditioner with Alexa

The DELLA Vario Series combines a 12000 BTU cooling capacity with advanced smart technology, including Alexa compatibility for voice control. Its pre-charged ductless inverter system is rated 19 SEER2 and supports heating down to -4℉ (-20℃).
The system incorporates smart sensors that measure room temperature at the remote control, ensuring precise airflow and energy savings. Other intelligent features include auto defrost, self-diagnosis, cleaning functions, multiple fan speeds, and energy-saving modes tailored for user convenience.
Manastin 12000BTU Mini Split Air Conditioner & Heater

The Manastin 12000BTU Mini Split delivers rapid cooling and heating, cooling rooms up to 750 sq. ft. in just 30 seconds and heating in 60 seconds. Its inverter technology operates at a 17 SEER2 rating with eco-friendly R32 refrigerant, enhancing energy efficiency while reducing environmental impact.
This unit offers five modes and four fan speed settings, including Turbo, ECO, Sleep, and Silent modes for quiet operation. A 24-hour timer adds convenience, and the unit supports multiple functions to adapt to various comfort needs.
hykolity WiFi Enabled 12,000 BTU Mini Split Air Conditioner & Heater

The hykolity 12,000 BTU Mini Split combines efficient cooling and heating with smart home compatibility. It features a high-power compressor and a heat pump designed to regulate temperatures between 61℉ and 88℉ for spaces up to 750 sq. ft.
This mini split boasts 19 SEER2 and 8.5 HSPF2 ratings, certified by ETL and AHRI standards, and uses variable frequency technology to save up to 30% energy. The system incorporates WiFi control, 4D airflow for uniform comfort, sleep and timer modes, and eco-friendly operation with automatic defrost for longer lifespan.
Buying Guide for Mini Split Air Conditioners
Cooling and Heating Capacity
Choosing a unit with the right BTU capacity is essential—too small, and it won’t cool or heat efficiently; too large can cause frequent cycling and wear. Consider the size of the room and ceiling height. For example, 9000-12000 BTU units typically cover 400 to 750 sq. ft.
Energy Efficiency
Look for units with high SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings. Higher values translate to lower energy consumption and costs. Inverter technology further improves efficiency by adjusting compressor speed based on demand.
Heating Options
Mini splits with a heat pump provide excellent year-round climate control. Heat pumps can operate at low outdoor temperatures and are more energy-efficient than electric resistance heaters.
Control and Smart Features
Modern mini splits often include remote controls, WiFi connectivity, and voice assistant compatibility. Features like timers, sleep modes, and temperature sensors enhance comfort and convenience.
Noisiness
Noise levels vary by model. For bedrooms or quiet spaces, look for units rated below 30 dB for whisper-quiet operation during night use.
Installation Considerations
Many mini splits come with a complete installation kit, but professional installation is recommended for optimal performance and warranty coverage.
Environmental Impact
Refrigerants like R32 have a lower environmental footprint compared to older refrigerants. Consider eco-friendly models to reduce greenhouse gas emissions.
Warranty and Support
Check for comprehensive warranties covering the compressor and parts, and verify manufacturer customer support ratings.