Finding the optimal 3 unit mini split system can significantly enhance your home’s comfort by offering independent climate control across multiple rooms. Whether cooling or heating, these units provide efficient energy usage and seamless integration with smart features. Below is a summary table of the top 5 mini split systems designed for multiple zones, all highly rated for capacity, features, and energy efficiency.
| Model | BTU Capacity | Energy Efficiency | WiFi Enabled | Special Features |
|---|---|---|---|---|
| Della ODU Tri 3 Zone | 27,000 (9K + 9K + 18K) | 19 SEER2 | Yes (Alexa & Wifi) | Energy-saving heat pump, quiet operation, pre-charged system |
| ROVSUN 3 Zone 28000 BTU | 28,000 (9K + 9K + 9K) | 20 SEER2 | No | Powerful heating/cooling, auto defrost, multiple modes |
| ROVSUN 28000 BTU Tri Zone WIFI | 28,000 (9K + 9K + 18K) | 20 SEER2 | Yes | WiFi control, innovative inverter tech, turbo function |
| TOSOT 30,000 BTU Tri 3 Zone | 30,000 (9K + 9K + 12K) | 21 SEER2 | Yes | Energy Star rated, federal tax rebates eligible, extreme weather resilience |
| Cooper & Hunter 28,000 BTU Tri 3-Zone | 28,000 (9K + 9K + 12K) | 23.8 SEER | Yes | Smartphone control, inverter compressor, reliable cold heating |
Content Navigation
- Della ODU Tri 3 Zone 27K BTU Mini Split AC System
- ROVSUN 3 Zone 28000 BTU Mini Split AC/Heating System
- ROVSUN 28000 BTU Tri Zone WIFI Mini Split AC/Heating System
- TOSOT 30,000 BTU Tri 3 Zone Mini Split AC Heat Pump
- Cooper & Hunter 28,000 BTU Tri 3-Zone Mini Split AC Heat Pump
- Buying Guide for 3 Unit Mini Split Systems
Della ODU Tri 3 Zone 27K BTU Mini Split AC System
The Della ODU Tri 3 Zone 27K BTU system is designed to cool up to 1800 sq.ft with three indoor air handlers (9,000 + 9,000 + 18,000 BTU) each controllable independently. It features a heat pump capable of operating in low ambient temperatures down to -4℉. The 19 SEER2 rating and DC inverter technology provide up to 30% power savings. This unit offers ultra-quiet operation at 50 dBa and includes essential installation components like copper pipe linesets and drain pipes.
Key highlights include Alexa and WiFi integration for remote control, professional installation requirement ensuring system longevity, and an ETL-listed, AHRI-certified pre-charged heat pump. It balances performance, energy efficiency, and convenience seamlessly for multi-zone comfort.
ROVSUN 3 Zone 28000 BTU Mini Split AC/Heating System
The ROVSUN 3 Zone 28000 BTU Mini Split provides versatile cooling and heating capabilities with three 9,000 BTU indoor units paired to one outdoor condenser. It is equipped with an advanced inverter heating system with a heat pump that functions in ambient temperatures as low as -13℉. This ductless system features an accelerated turbo mode, iFEEL temperature sensing, and silent mode for quiet operation.
Beyond performance, it delivers optimum energy savings with a 20 SEER2 rating and is ETL and AHRI certified. Built for both residential and commercial settings, this mini split comes with pre-charged condenser and a 25ft line set for flexible installation possibilities.
ROVSUN 28000 BTU Tri Zone WIFI Mini Split AC/Heating System
This ROVSUN tri zone system supports three indoor air handlers (9,000 + 9,000 + 18,000 BTU) with individual controls, linked to a single 28,000 BTU outdoor condenser. The unit offers WiFi-enabled control for remote operation and integrates smart inverter technology. Its comprehensive features include auto defrost, self-diagnosis, sleep mode, 4-way airflow swing, and turbo fan speed.
The 20 SEER2 rating ensures impressive energy efficiency with up to 30% savings. Suitable for year-round use in various environments, the system balances performance with aesthetics and convenience thanks to its wireless control functionality.
TOSOT 30,000 BTU Tri 3 Zone Mini Split AC Heat Pump
The TOSOT Cosmo Series 30,000 BTU Tri 3 Zone mini split includes two 9,000 BTU and one 12,000 BTU indoor units, making it ideal for nuanced room-by-room temperature management between 61-86℉. The system is Energy Star-certified and boasts a prestigious 21 SEER2 and 10 HSPF2 rating, translating to up to 24% lower energy costs compared to standard units.
Designed to withstand extreme weather from -22℉ to 118℉, the heat pump features an intelligent defrost function to maintain heating efficiency in cold climates. It is eligible for federal tax rebates, emphasizing both energy savings and environmental responsibility.
Cooper & Hunter 28,000 BTU Tri 3-Zone Mini Split AC Heat Pump
The Cooper & Hunter 28,000 BTU Tri 3-Zone system offers three wall-mounted indoor handlers (9K, 9K, and 12K BTU) controlled remotely via smartphone app with smart port adapters. It features a high efficiency inverter compressor with an impressive 23.8 SEER rating, delivering reliable heating even down to -13℉ in cold weather.
This system uses R-410A refrigerant and includes pre-charged components plus a full 25ft installation kit, simplifying installation by professionals. It is UL listed and AHRI certified, ensuring compliance with safety and efficiency standards for residential or commercial applications.
Buying Guide for 3 Unit Mini Split Systems
BTU Capacity and Room Size
Determine the total BTU capacity by calculating the square footage of each room. Typically, the sum of the indoor units’ BTUs should match or slightly exceed your total cooling/heating load. Choosing mismatched BTUs reduces efficiency and comfort.
Energy Efficiency Ratings
Look for units with higher SEER (Seasonal Energy Efficiency Ratio) and HSPF (Heating Seasonal Performance Factor) ratings. For mini splits, values of 19 SEER and above indicate substantial energy savings. Energy Star certification often signals superior efficiency.
Zone Control and Customization
Individual temperature controls for each indoor unit optimize comfort and power usage. If rooms have different use patterns or sunlight exposure, multi-zone systems allow customized settings for each space.
Heating Capabilities and Temperature Range
If you need year-round climate control, ensure your mini split supports reliable heating with a heat pump functioning efficiently in cold ambient temperatures (below freezing). Features like intelligent defrosting improve performance in winter.
Installation and Additional Components
Most 3 unit mini splits require professional installation, including line set vacuuming and refrigerant level adjustment. Verify whether copper linesets, drain pipes, and installation kits are included or need to be purchased separately. Some brands offer WiFi-enabled smart controls for convenience.
Noise Level
Look for systems with low noise levels, especially indoor units rated around 50 dBa or less, to avoid disruption in bedrooms, living rooms, or offices.
Brand Reputation and Certification
Choose units certified by AHRI, ETL, or UL for verified performance and safety. Well-known brands tend to offer better customer support and warranty services.