If you’re searching for a compact and energy-efficient cooling and heating solution for your home or office, small split system air conditioners offer powerful performance in a space-saving design. These units typically provide both cooling and heating functions with inverter technology, quiet operation, and smart features. Below, we present a comparison table followed by detailed reviews of the best small split system air conditioners tailored to fit rooms ranging from 400 to 750 square feet.
| Model | BTU & Coverage | Energy Efficiency (SEER2) | Key Feature | Smart Connectivity |
|---|---|---|---|---|
| ROVSUN 9000 BTU Mini Split | 9000 BTU, Up to 400 sq.ft. | 19 SEER2 | Whisper-quiet operation, heat pump | Yes, WiFi-enabled |
| Manastin 12000 BTU Mini Split | 12000 BTU, Up to 750 sq.ft. | 17 SEER2 | Fast cooling & heating modes | No |
| COSTWAY 12000 BTU Mini Split | 12000 BTU, Up to 750 sq.ft. | 20 SEER2 | 5 operating modes, ECO mode | No |
| YITAHOME 9000 BTU Mini Split | 9000 BTU, Up to 450 sq.ft. | 19 SEER2 | Alexa compatible, health mode | Yes, WiFi & Alexa |
| ROVSUN 11500 BTU Mini Split | 11500 BTU, Up to ~600 sq.ft. | 17 SEER2 | All-season integrated system | Yes, WiFi-enabled |
Content Navigation
- ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
- Manastin 12000BTU Mini Split Air Conditioner & Heater
- COSTWAY 12000BTU Mini Split Air Conditioner & Heater
- YITAHOME 9000 BTU Mini Split Air Conditioner Heat Pump System
- ROVSUN 11500 BTU Wifi Enabled Mini Split Air Conditioner & Heater
- Buying Guide for Small Split System Air Conditioners
ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
This ROVSUN 9000 BTU Mini Split unit delivers powerful cooling and heating ideal for rooms up to 400 sq.ft. It operates quietly at 28dB in mute mode, ensuring a peaceful environment. The inverter technology features a high 19 SEER2 rating, automatically adjusting compressor speed for optimal energy savings up to 35%. It supports a wide temperature range (61°F–88°F) along with heat pump functionality and a dehumidification mode for year-round use. This model is perfect for residential or light commercial applications.
Manastin 12000BTU Mini Split Air Conditioner & Heater
The Manastin 12000 BTU Mini Split offers rapid cooling within 30 seconds and heating in 60 seconds, covering areas up to 750 sq.ft. It uses environmentally friendly R32 refrigerant and operates with a 17 SEER2 inverter system for excellent energy efficiency. Users can enjoy five system modes including Turbo and ECO modes plus a 24-hour timer and four fan speed levels. This makes it versatile for different comfort needs while balancing performance and energy conservation.
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
This COSTWAY 12000 BTU Split-System is both energy efficient and feature-rich. It boasts a 20 SEER2 rating with an inverter-driven compressor and heat pump delivering year-round comfort. Five operational modes including Dry, Auto, and Turbo provide flexibility, while sleep and ECO settings help reduce energy consumption. A remote allows easy control with a low-noise design promoting quiet nights. It is suitable for rooms up to 750 sq.ft.
YITAHOME 9000 BTU Mini Split Air Conditioner Heat Pump System
The YITAHOME 9000 BTU Mini Split is ETL and AHRI-certified and supplies efficient cooling and heating for spaces up to 450 sq.ft. It is WiFi-enabled and compatible with Alexa for voice or remote app control. This unit incorporates advanced inverter technology for 19 SEER2 efficiency and offers a “HEALTH” mode featuring negative ion air purification and PM2.5 particle removal. Operating noise is less than 41dB, suited for bedrooms and offices requiring silent comfort.
ROVSUN 11500 BTU Wifi Enabled Mini Split Air Conditioner & Heater
The ROVSUN 11500 BTU Mini Split is an all-season air conditioner and heating solution for rooms around 600 sq.ft. This model features integrated functions including a robust heat pump, dehumidifier, and fan with modes such as auto defrost and self-diagnosis. It is rated at 17 SEER2 with inverter technology that reduces energy consumption by about 25%. The unit supports WiFi and voice control via Alexa or Google Assistant, allowing convenient operation from anywhere.
Buying Guide for Small Split System Air Conditioners
When choosing the best small split system air conditioner, consider the following factors to ensure optimal performance:
Cooling and Heating Capacity
Assess your room size to choose a unit with the correct BTU capacity. Units from 9000 to 12000 BTU typically cover 400 to 750 sq.ft. A properly sized unit cools/heats efficiently without overworking.
Energy Efficiency Ratings (SEER2)
Look for models with a high SEER2 rating—17 or above is ideal for energy savings. Inverter technology improves efficiency by adjusting compressor speed to match demand.
Installation and Kit Completeness
Many mini splits come with installation kits including mounting brackets, tubing, and wiring. Verify what’s included to reduce additional costs and installation complexity.
Noise Level
For bedrooms or offices, prioritize models with quiet operation, typically rated 28-41 dB, to minimize disturbance during use.
Smart Controls and Connectivity
WiFi-enabled units that support apps or voice assistants like Alexa/Google provide convenient temperature control remotely or hands-free.
Additional Features and Modes
Features like heat pumps, dehumidifiers, auto defrost, eco modes, timers, and fan speed options enhance comfort and flexibility across seasons.
Environmental Impact
Opt for units using eco-friendly refrigerants such as R32 to reduce environmental footprint without compromising cooling performance.
By considering these aspects, you can select a small split system air conditioner that balances performance, comfort, and energy efficiency tailored to your specific needs.