Choosing the right high efficiency mini split system can drastically improve your home’s comfort while saving on energy costs. Mini splits offer versatile cooling and heating solutions without ductwork, making them ideal for a range of room sizes and multi-zone setups. Below is a summary table of top energy-efficient mini splits available on Amazon, highlighting their key specs for quick comparison.
| Product | Cooling Capacity (BTU) | SEER2 Rating | Coverage Area (sq. ft.) | Heating Capability | Multi-Zone Support |
|---|---|---|---|---|---|
| DELLA Vario Series 12000 BTU | 12,000 | 19 | Up to 550 | Heat pump down to -4°F | No |
| TMYICE 18000 BTU Mini Split | 18,000 | 19 | Up to 1250 | Heat pump | No |
| COSTWAY 24000 BTU Wifi Mini Split | 24,000 | 21 | Up to 1500 | Heat pump | No |
| Della 27K BTU Tri Zone Mini Split | 27,000 (3×9,000) | 19 | Up to 1200 | Heat pump down to -4°F | Yes (3 zones) |
| Oylus 18000 BTU Mini Split AC/Heating | 18,000 | 19 | Up to 1250 | Heat pump | No |
Content Navigation
- DELLA Vario Series 12000 BTU Mini Split Air Conditioner
- TMYICE 18000 BTU Mini Split AC/Heating System
- COSTWAY 24000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
- Della 27K BTU ODU Tri 3 Zone Mini Split Air Conditioner
- Oylus 18000 BTU Wall Mounted Mini Split Air Conditioner
- Buying Guide for High Efficiency Mini Split Systems
DELLA Vario Series 12000 BTU Mini Split Air Conditioner
This 12000 BTU mini split system from Della offers energy-efficient ductless cooling and heating with a SEER2 rating of 19. Featuring DC inverter technology and a heat pump capable of performing in temperatures down to -4°F, it delivers up to 30% power savings. It covers rooms up to 550 square feet, making it suitable for bedrooms or small living areas.
Its intelligent functions include 4D air flow (up, down, left, right), turbo function, sleep and eco modes, and a programmable 24-hour timer for optimized comfort and savings. It comes with a complete 16.4-foot installation kit, including copper piping and drain pipe, ready for professional or DIY installation. An ETL listing and AHRI certification ensure quality and safety for an efficient HVAC upgrade.
TMYICE 18000 BTU Mini Split AC/Heating System
This 18,000 BTU unit provides versatile 4-in-1 air conditioning—cooling, heating, drying, and fan modes are designed for year-round comfort in rooms up to 1250 square feet. It uses R32 refrigerant, which is eco-friendly and efficient, coupled with modern inverter technology.
The system includes a pre-charged condenser and heat pump that provide rapid temperature adjustments with turbo boost and 4D airflow system. Its remote control features smart 0.5–24-hour timers and an ultra-quiet operation at just 25dB, ideal for bedrooms and offices. The energy-saving ECO and Sleep modes enhance comfort while reducing electricity bills.
COSTWAY 24000 BTU Wifi Enabled Mini Split Air Conditioner & Heater
The COSTWAY mini split unit offers a powerful 24000 BTU cooling and 23000 BTU heating capacity with a top-tier SEER2 rating of 21, making it one of the most energy efficient on the list. It can condition spaces up to 1500 square feet, providing high performance for larger living rooms or open office areas.
Equipped with Wi-Fi, the unit allows smart app control alongside the included remote. It supports cool, heat, fan, and dry modes with adjustable fan speeds and a noise level as low as 38 decibels, ideal for quiet environments. The inverter technology and ECO mode significantly reduce energy consumption without sacrificing comfort.
Della 27K BTU ODU Tri 3 Zone Mini Split Air Conditioner
This multi-zone model features three indoor units of 9000 BTU each, supporting simultaneous cooling and heating for up to 1200 square feet distributed across multiple rooms. The system uses a high efficiency 19 SEER2 inverter and a heat pump suitable for low temperatures down to -4°F.
Ideal for homeowners wanting individualized comfort, each indoor air handler has independent temperature controls. The package includes full installation kits and copper piping. It also supports Alexa voice commands for smart home integration. Note that the self-cleaning function is displayed but not activated on this model.
Oylus 18000 BTU Wall Mounted Mini Split Air Conditioner
Providing efficient year-round climate control, the Oylus mini split offers 18,000 BTU cooling and 18,400 BTU heating capacity with a 19 SEER2 rating tailored for spaces up to 1250 square feet. It features a heat pump and inverter technology that reduces energy use by up to 36% versus traditional units.
With an easy-to-use remote control, users can switch between cool, heat, dry, and fan modes, adjust fan speeds, and set a 24-hour timer. The LED display provides status updates and can be turned off to prevent light disturbance, supporting comfortable sleep and efficient operation day and night.
Buying Guide for High Efficiency Mini Split Systems
When selecting a high efficiency mini split system, several factors should guide your decision to ensure you get optimal comfort and energy savings:
- BTU Capacity and Room Size: Choose a system with the appropriate capacity that matches the size of the intended room(s). Undersized units won’t effectively condition the space, while oversized units can waste energy cycling unnecessarily.
- Energy Efficiency Ratings: Look for units with high SEER2 (Seasonal Energy Efficiency Ratio) ratings and HSPF2 (Heating Seasonal Performance Factor) for heating. Ratings above 19 SEER2 indicate excellent energy efficiency, reducing electric bills.
- Heat Pump Performance in Cold Climates: If you live in a colder region, check the lowest operating temperature of the heat pump. Models capable of operating effectively in sub-zero temperatures (-4°F or lower) extend comfort throughout winter.
- Multi-Zone Functionality: For homes requiring conditioning in multiple rooms or zones, multi-zone systems with independent controls provide personalized comfort and better energy management.
- Installation Kit and Ease: Ensure the unit comes with comprehensive installation kits including copper piping, drain lines, and mounting hardware. Compatibility with professional or DIY installation can be a deciding factor.
- Smart Controls and Noise Level: Remote controls, app-enabled smart functions, programmable timers, and quiet operation enhance ease of use and user experience.
- Certification and Warranty: Look for ETL listed, AHRI certified units to ensure compliance with safety and performance standards. Also review warranty terms for peace of mind.
Selecting the right mini split can significantly improve your indoor air quality, comfort, and energy efficiency. Evaluate your space requirements along with features, and choose a system that best matches your lifestyle and budget.