Choosing the best whole house split air conditioner can dramatically improve your home’s comfort throughout the year. These ductless systems provide efficient heating and cooling for multiple rooms without the need for bulky ductwork. Below is a summary table of top-rated mini split AC units that balance energy savings, quiet operation, and easy installation.
| Product | BTU Capacity | Energy Efficiency | Coverage Area | Special Features |
|---|---|---|---|---|
| ROVSUN 28000 BTU Tri Zone | 28000 (Tri Zone) | 20 SEER2 | Multiple rooms | WiFi, Heat Pump, Turbo Mode |
| COSTWAY 12000BTU Mini Split | 12000 | 20 SEER2 | Up to 750 sq. ft. | Auto Mode, Sleep, ECO, Turbo |
| ROVSUN 11500 BTU Mini Split | 11500 | 17 SEER2 | Up to 550 sq. ft. | Ultra-quiet, Auto Defrost, Sleep Mode |
| DELLA Vario Series 12000 BTU | 12000 | 19 SEER2 | Up to 550 sq. ft. | Alexa Compatible, 4D Airflow, Turbo |
| Manastin 12000BTU Mini Split | 12000 | 17 SEER2 | Up to 750 sq. ft. | Fast Cooling/Heating, ECO Mode, Turbo |
Content Navigation
- ROVSUN 28000 BTU Tri Zone WIFI Mini Split AC
- COSTWAY 12000BTU Mini Split Air Conditioner & Heater
- ROVSUN 11500 BTU Mini Split Air Conditioner & Heater
- DELLA Vario Series 12000 BTU Mini Split Air Conditioner
- Manastin 12000BTU Mini Split Air Conditioner & Heater
- Buying Guide for Whole House Split Air Conditioners
ROVSUN 28000 BTU Tri Zone WIFI Mini Split AC

The ROVSUN 28000 BTU Tri Zone Mini Split is a versatile all-in-one system designed for multiple rooms. Its 28,000 BTU outdoor condenser pairs with three indoor units (two 9000 BTU and one 18000 BTU), each controllable individually. This system features a powerful heat pump supporting wide temperature use from -13℉ to 131℉. Equipped with advanced inverter technology, it provides up to 30% energy savings and covers cooling, heating, dehumidifying, and turbo fan functions.
Additional features include auto defrost, self-diagnosis and cleaning, iFEEL temperature sensing mode, and a 24-hour timer. The system runs quietly with sleep and silent modes, making it ideal for bedrooms, living rooms, and commercial spaces alike.
COSTWAY 12000BTU Mini Split Air Conditioner & Heater

This COSTWAY 12000BTU Ductless AC uses a high-power compressor and 1 ton heat pump, making it both efficient and reliable. It features 5 modes including auto, cool, dry, heat, and fan, plus 4 fan speed options to ensure comfort all year. Thanks to inverter technology, it reduces power consumption and extends the compressor’s lifespan.
The smart timer (0.5-24 hrs) and low noise operation make this unit perfect for bedrooms or living spaces up to 750 sq. ft. Remote control convenience and screen auto-off functionality contribute to quiet, uninterrupted rest.
ROVSUN 11500 BTU Mini Split Air Conditioner & Heater

The ROVSUN 11500 BTU Mini Split air conditioner delivers integrated all-season climate control featuring a heat pump with dehumidifier and fan modes. It supports operation in temperatures from 5°F to 122°F and adheres to 17 SEER2 energy standards, ensuring up to 25% energy savings compared to baseline units.
Its ultra-quiet 33 dBa operation is complemented by features like automatic defrost, self-diagnosis, sleep and ECO modes, plus a 24-hour timer. The indoor display can be turned off to prevent disturbance during sleep.
DELLA Vario Series 12000 BTU Mini Split Air Conditioner

The DELLA Vario Series 12000 BTU mini split AC offers cooling and heating up to 550 sq. ft with 19 SEER2 efficiency. It integrates a heat pump capable of operation down to -4°F and comes with a full installation kit. Smart features include 4D airflow control, I FEEL temperature sensing, turbo mode, and scheduling options.
Compatibility with Alexa voice control adds convenience, while the unit’s DC inverter technology contributes to up to 30% power savings. This ductless system is ETL listed and AHRI certified for reliability.
Manastin 12000BTU Mini Split Air Conditioner & Heater

The Manastin 12000BTU Mini Split prioritizes fast temperature adjustments with the ability to cool a room in 30 seconds and heat in 60 seconds. It covers up to 750 sq. ft and is rated 17 SEER2 for energy efficiency. Using R32 refrigerant, it balances performance with environmental responsibility.
This model includes multiple modes and fan speeds, a 24-hour timer, Turbo cooling/heating, ECO, Sleep, and Silent modes. It’s well-suited for medium-sized rooms requiring quick response times and energy savings.
Buying Guide for Whole House Split Air Conditioners
Cooling and Heating Capacity (BTU)
The BTU rating indicates the cooling and heating power of the system. Choose a unit with appropriate capacity for your square footage. For whole house systems covering multiple rooms, consider a multi-zone mini split with multiple indoor units.
Energy Efficiency (SEER Rating)
Seasonal Energy Efficiency Ratio (SEER) measures the unit’s efficiency. Higher SEER ratings (17 or above) reduce electricity consumption and operational costs. Look for units with inverter technology for precise temperature regulation and energy savings.
Number of Zones and Indoor Units
Multi-zone systems allow independent climate control for different rooms. This flexibility maximizes comfort and energy savings by only conditioning occupied spaces. Choose a system with indoor air handlers sized appropriately for your rooms.
Installation Requirements
Confirm if the unit comes with a pre-charged condenser and installation kit. Professional installation is recommended but some systems offer DIY options. Pay attention to line set length limits and electrical requirements to suit your home setup.
Additional Features
- WiFi and Smart Controls: Allow remote control and integration with smart home devices.
- Noise Level: Look for quiet operation (around 30 dBa or lower) for bedrooms and living areas.
- Heating Capabilities: Heat pump function extends usability year-round, especially in colder climates.
- Airflow and Filtration: 4-way or 4D airflow enhances comfort; some units offer air purification features.
Certifications and Reliability
Choose units certified by AHRI and ETL to ensure compliance with safety and performance standards. These certifications also indicate better warranty support and reliability.