Looking for the best energy efficient mini split air conditioners and heaters for your home? Mini split systems offer powerful, quiet, and efficient cooling and heating without the need for ductwork. Below is a summary table featuring top models selected for their energy-saving technology, versatile features, and ease of installation.
| Model | BTU Cooling Capacity | Energy Efficiency (SEER2) | Coverage Area (Sq.Ft) | Heating Method | Key Features |
|---|---|---|---|---|---|
| COSTWAY 12000BTU Mini Split | 12,000 | 20 SEER2 | 750 | Heat Pump | Inverter tech, 5 modes, quiet operation |
| DELLA Vario Series 12000 BTU | 12,000 | 19 SEER2 | 550 | Heat Pump | Alexa compatible, 4D airflow, multiple fan speeds |
| ROVSUN 9000 BTU Wifi Enabled | 9,000 | 19 SEER2 | 400 | Heat Pump | Wifi control, ultra-quiet, advanced inverter tech |
| Della 36K BTU ODU Tri 3 Zone | 36,000 (3-zone) | 19 SEER2 | 2600 | Heat Pump | Multi-zone control, Alexa compatible, quiet operation |
| Oylus Mini Split 12000 BTU | 12,000 | 19 SEER2 | 750 | Heat Pump | Energy-saving ECO mode, remote control, LED display |
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
The COSTWAY 12000BTU Mini Split system features a high power compressor combined with a 1-ton heat pump, making it ideal for year-round cooling and heating in rooms up to 750 sq. ft. This model integrates innovative inverter technology to adjust power supply frequency, reducing the compressor cycling for enhanced energy efficiency and prolonged equipment life. With five operating modes (auto, cool, dry, heat, fan) and four fan speeds, users can customize comfort easily. Additional features include sleep mode, ECO mode to optimize power savings, intelligent temperature sensing (iFEEL), and turbo function that intensifies airflow. Quiet operation and auto-off display help ensure undisturbed relaxation. Its remote control is user-friendly, promoting effortless climate management.
DELLA Vario Series 12000 BTU Mini Split AC with Alexa
The DELLA Vario 12000 BTU Mini Split offers energy-efficient cooling and heating with a 19 SEER2 efficiency rating, suitable for spaces up to 550 sq. ft. It’s certified by AHRI and ETL and comes pre-charged and ready for installation. The built-in heat pump supports operation down to -4°F, ensuring dependable heating in cold conditions. This unit supports smart home connectivity through Alexa and includes features like 4D air flow for optimal cooling distribution, iFeel mode for personalized comfort, sleep timer, eco mode for energy savings, turbo function, and multiple fan speeds. The package includes a comprehensive installation kit, facilitating a simplified setup process.
ROVSUN 9000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
The ROVSUN 9000 BTU Mini Split is designed for smaller rooms up to 400 sq. ft. This wireless-enabled system boasts a 19 SEER2 rating and inverter technology that intelligently adjusts compression speed for up to 35% energy savings. It delivers rapid and quiet cooling or heating with sound levels as low as 28dB in mute mode, making it ideal for bedrooms or offices. Functions include a heat pump, dehumidification mode, and wide temperature range control from 61°F to 88°F. The uniform air distribution system ensures consistent comfort while enhancing energy efficiency.
Della 36K BTU ODU Tri 3 Zone Energy Efficient Mini Split
The Della 36K BTU Tri Zone Mini Split accommodates large spaces up to 2600 sq. ft. through three separate indoor air handlers (12K + 12K + 24K BTU). It offers precise climate control for multiple rooms simultaneously with individual remotes, powered by a heat pump system and high-efficiency 19 SEER2 DC Inverter technology. The unit is ETL and AHRI-certified, supports Alexa, and maintains quiet operation at 51dBa. Professional installation is required due to the system’s complexity, and line-set vacuuming ensures optimal refrigerant balance. This multi-zone setup enhances energy management across large homes or offices.
Oylus Mini Split AC/Heating System 12000 BTU
The Oylus 12000 BTU Mini Split AC/Heating System supports cooling and heating for rooms up to 750 sq. ft., utilizing a heat pump and inverter tech for efficient temperature control ranging from 61°F to 88°F. Its SEER2 19 cooling efficiency and HSPF2 8.5 heating performance help reduce energy consumption by up to 36%. This unit offers an ECO mode for environmental savings, alongside a 24-hour programmable timer and an easy-to-use remote with LED display. The design promotes quiet and reliable operation suited for year-round comfort and smart control.
Buying Guide for Energy Efficient Mini Split Systems
When selecting the best energy efficient mini split, consider the following factors to ensure optimal performance, budget, and comfort:
1. Cooling and Heating Capacity (BTU)
The BTU rating should correspond to your room size. For small to medium rooms (400-750 sq.ft.), 9000 to 12000 BTU units suffice. Larger homes require multi-zone or higher capacity units. Oversized systems waste energy by cycling on/off frequently, while undersized units struggle to maintain comfort.
2. Energy Efficiency (SEER2 Rating)
SEER2 (Seasonal Energy Efficiency Ratio) indicates cooling efficiency; higher ratings mean better energy savings. Look for units with SEER2 ratings near or above 19 for substantial utility cost reductions. Heat pump systems also come with HSPF ratings for heating efficiency.
3. Heat Pump and Operation Range
Heat pumps enable both cooling and heating through the same system, ideal for year-round use. Check the system’s heat pump capability and operating temperature range, especially if you live in colder climates requiring reliable heating below freezing points.
4. Installation Requirements and Kit
Many mini split units come pre-charged with refrigerant, making installation easier. Installation kits including copper pipes, drain hose, and wiring simplify setup, but professional installation is often recommended or required for multi-zone or large units to ensure proper vacuuming and refrigerant balance.
5. Smart Features and Controls
Remote control, timer functions, and smart home compatibility (Alexa, Wi-Fi control) increase convenience. Inverter technology adjusts compressor speed dynamically for quieter operation and energy savings. Modes like ECO, sleep, turbo, and dehumidification enhance user experience and efficiency.
6. Noise Level
Look for ultra-quiet operation (typically < 40dB) for bedrooms and living spaces. Systems with noise reduction features ensure peaceful environments while maintaining performance.
7. Environmental Considerations
Choose units using eco-friendly refrigerants like R32 to minimize environmental impact. High energy-efficiency ratings also contribute to reducing your carbon footprint.