Finding the best energy efficient mini split system can significantly improve your home’s comfort while reducing electricity bills. Mini splits offer versatile heating and cooling solutions ideal for various spaces, from small rooms to large multi-zone setups. Below is a comparison table featuring five top-rated energy efficient mini splits with key specifications to help you select one that fits your needs.
| Product | BTU Capacity | Energy Efficiency (SEER) | Heating & Cooling | Coverage Area |
|---|---|---|---|---|
| COSTWAY 12000BTU Mini Split | 12000 BTU | 20 SEER2 | Heat Pump | Up to 750 Sq. Ft |
| DELLA Vario Series 12000 BTU | 12000 BTU | 19 SEER2 | Heat Pump | Up to 550 Sq.Ft |
| ROVSUN 9000 BTU Wifi Enabled Mini Split | 9000 BTU | 19 SEER2 | Heat Pump | Up to 400 Sq.Ft |
| Della 36K BTU 3 Zone Multi Zone System | 36000 BTU (3 Zone) | 19 SEER2 | Heat Pump | Up to 2600 Sq.Ft |
| Oylus 12000 BTU Ductless Mini Split | 12000 BTU | 19 SEER2 | Heat Pump | Up to 750 Sq.Ft |
Content Navigation
- COSTWAY 12000BTU Mini Split Air Conditioner & Heater
- DELLA Vario Series 12000 BTU Mini Split AC with Alexa
- ROVSUN 9000 BTU Wifi Enabled Mini Split AC & Heater
- Della 36K BTU 3 Zone Multi Zone Mini Split AC System
- Oylus 12000 BTU Ductless Mini Split Air Conditioner with Heat Pump
- Buying Guide for Energy Efficient Mini Split Systems
COSTWAY 12000BTU Mini Split Air Conditioner & Heater
The COSTWAY 12000BTU mini split system is designed for year-round comfort with efficient cooling and heating capabilities. Featuring a high-power compressor and one ton heat pump, it efficiently cools rooms up to 750 square feet.
This unit incorporates innovative inverter technology, adjusting power supply frequency to reduce compressor cycling, which minimizes electricity consumption and extends equipment life. It offers five operational modes: auto, cool, dry, heat, and fan, plus four variable fan speeds, Sleep and ECO modes, iFEEL sensor, and turbo function to tailor comfort precisely.
Control is easy with the included remote, which offers a 0.5 to 24-hour timer and a display that dims automatically to avoid disrupting sleep. Noise levels remain low for quiet operation—perfect for bedrooms or living spaces.
DELLA Vario Series 12000 BTU Mini Split AC with Alexa
The DELLA Vario Series 12000 BTU mini split delivers efficient cooling and heating for spaces up to 550 square feet, boasting a SEER2 rating of 19. This ductless system uses DC inverter technology and is AHRI certified for reliable, energy-saving operation.
Included is a full installation kit, with standard copper pipe sizes, and the unit works in very cold climates (down to -4°F). Smart features include 4D airflow that moves up/down and left/right, iFEEL mode for precise temperature sensing, multiple fan speeds, sleep and ECO modes, and turbo function for rapid temperature adjustment.
It supports Alexa voice control, adding convenience and modern smart home compatibility. The maximum fuse size recommended is 25A.
ROVSUN 9000 BTU Wifi Enabled Mini Split AC & Heater
The ROVSUN 9000 BTU system provides flexible cooling and heating for rooms up to 400 square feet. Thanks to its inverter heat pump technology and a SEER2 rating of 19, this mini split unit saves up to 35% energy by automatically adjusting compressor speed according to indoor temperature.
This model features ultra-quiet operation at 28dB in mute mode and supports wide temperature control between 61°F and 88°F, ideal for various climates and personal comfort. It also includes an effective dehumidification function.
The system is wifi-enabled for smart control, enabling users to adjust settings conveniently via mobile apps or voice controls.
Della 36K BTU 3 Zone Multi Zone Mini Split AC System
Della’s 36,000 BTU tri-zone mini split system is ideal for cooling and heating multiple rooms up to 2,600 square feet. With three indoor air handlers—two 12,000 BTU and one 24,000 BTU—the unit allows individual temperature control in each zone for customized comfort.
The system uses 19 SEER2 efficient DC inverter technology, saving roughly 30% on power consumption. It includes a heat pump capable of functioning reliably in low temperatures down to -4°F. The unit operates quietly at 51 dBA and provides equal airflow distribution across spaces.
This model requires professional installation and comes with a complete set of copper pipe lines and drain pipes for all three zones.
Oylus 12000 BTU Ductless Mini Split Air Conditioner with Heat Pump
The Oylus 12000 BTU ductless mini split air conditioner and heat pump system combines efficient SEER2 19 cooling with an 8.5 HSPF heating rating. Designed for areas up to 750 square feet, it maintains temperatures between 61°F and 88°F year-round.
This unit reduces energy use by up to 36% compared to conventional systems through advanced inverter technology and eco-friendly operation modes like ECO mode. The heat pump ensures effective heating during winter months.
User convenience is enhanced with a remote control featuring temperature, fan speed, mode adjustment, and a 24-hour timer. An LED display provides system status and can be turned off to prevent night disturbance.
Buying Guide for Energy Efficient Mini Split Systems
Cooling and Heating Capacity (BTU)
Choosing the right BTU rating is vital for efficient mini split performance. For small rooms up to 400-500 sq.ft, a 9000-12000 BTU unit suffices. Larger spaces require units with higher BTU like 18000 or multi-zone systems combining multiple capacities to cover bigger areas. Oversized units can waste energy; undersized units may struggle to maintain comfort.
Energy Efficiency (SEER Rating)
Look for mini splits with high SEER (Seasonal Energy Efficiency Ratio) values, preferably 19 or above, to ensure lower electricity usage while maintaining performance. Systems with inverter technology adjust compressor speed based on room temperature, saving energy during partial-load conditions.
Heating Function and Heat Pump Performance
For year-round comfort, select units with integrated heat pumps capable of operating efficiently at low outdoor temperatures. Heating Seasonal Performance Factor (HSPF) ratings indicate heating efficiency—higher values mean better performance.
Installation Requirements
Mini splits generally require professional installation involving mounting indoor units, an outdoor condenser, refrigerant lines, electrical connections, and vacuuming to remove air from line sets. Multi-zone systems need careful line-set adjustments. Check if the product includes installation kits and official guidance.
Smart Controls and Features
Remote controls, WiFi connectivity, and compatibility with voice assistants (e.g., Alexa) offer convenient climate management. Additional modes like sleep, eco, dry, turbo boost, and timers enhance usability and comfort while optimizing power consumption.
Noise Level
Consider units with low operational noise (below 40 dB) to avoid disruption, especially in bedrooms or home offices. Some models feature ultra-quiet or mute modes for nighttime operation.
Environmental Impact
Modern mini splits often use eco-friendly refrigerants like R32, which have lower global warming potential compared to older refrigerants. Energy-efficient designs not only save on bills but also reduce carbon footprint.