Finding the best heat and cool mini split system can significantly improve your indoor comfort while saving on energy. These ductless air conditioners with heat pump capabilities provide both heating and cooling efficiently and quietly. In this guide, we review top-rated units ideal for different room sizes, packed with features such as inverter technology, WiFi control, and easy installation. Below is a quick comparison of the leading models to help you make an informed choice.
Product | BTU Capacity | Coverage (Sq. Ft.) | Energy Efficiency (SEER) | Highlights |
---|---|---|---|---|
MRCOOL Easy Pro 18,000 BTU | 18,000 BTU | Up to 800 | Not specified | DIY installation, quiet operation, smart WiFi control |
COSTWAY 12,000 BTU Mini Split | 12,000 BTU | Up to 750 | 20 SEER2 | 5 modes, inverter compressor, remote control |
ROVSUN 9000 BTU WiFi Mini Split | 9,000 BTU | Up to 400 | 19 SEER2 | Ultra-quiet, inverter, WiFi enabled |
DELLA Motto Series 18,000 BTU | 18,000 BTU | Up to 1000 | 19 SEER2 | Alexa compatible, R32 refrigerant, multiple modes |
MilleLoom 12,000 BTU Mini Split | 12,000 BTU | Up to 1500 | 22 SEER2 | WiFi control, energy saving, 5 operational modes |
Content Navigation
- MRCOOL Easy Pro 18,000 BTU Mini-Split Air Conditioner Heat Pump
- COSTWAY 12,000 BTU Mini Split Air Conditioner & Heater
- ROVSUN 9000 BTU WiFi Enabled Mini Split AC & Heater
- DELLA Motto Series 18,000 BTU Wifi Enabled Mini Split
- MilleLoom 12,000 BTU Mini Split Air Conditioner Heat Cool
- Buying Guide For Heat And Cool Mini Split Systems
MRCOOL Easy Pro 18,000 BTU Mini-Split Air Conditioner Heat Pump

The MRCOOL Easy Pro 18,000 BTU offers reliable heating and cooling for rooms up to 800 square feet with its ductless heat pump system. It features a streamlined DIY installation process, significantly reducing both time and cost during setup. This unit operates quietly with an efficient compressor, ensuring minimal disruption while maintaining desired room temperatures. The inclusion of smart WiFi control adds convenience, allowing users to manage settings remotely from their devices.
COSTWAY 12,000 BTU Mini Split Air Conditioner & Heater

The COSTWAY 12,000 BTU Mini Split is equipped with a high-power compressor and a 1-ton heat pump, offering an energy-efficient solution certified by AHRI. Its inverter technology adjusts power supply frequency to reduce compressor cycling, prolonging equipment life and lowering power consumption. This unit supports five modes—auto, cool, dry, heat, and fan—with four fan speeds. The handy remote control includes a sleep mode and timer, plus a quiet operation design ideal for peaceful environments.
ROVSUN 9000 BTU WiFi Enabled Mini Split AC & Heater

The ROVSUN 9000 BTU system is ideal for smaller spaces up to 400 sq. ft., delivering both rapid cooling and heating with an adjustable temperature range of 61°F to 88°F. Utilizing advanced inverter technology and achieving a high 19 SEER2 rating, it smartly adjusts compressor speed to improve efficiency and reduce energy use by up to 35%. The unit operates at an ultra-quiet 28 dB, providing a calm atmosphere. Its WiFi capability further enhances user control.
DELLA Motto Series 18,000 BTU Wifi Enabled Mini Split

Designed for larger areas up to 1000 sq. ft., the DELLA Motto Series 18,000 BTU boasts a 19 SEER2 rating combined with R32 refrigerant, offering an eco-friendlier alternative to older refrigerants. Its system includes multiple smart functions such as 4D airflow, iFeel mode for temperature sensing, and various fan speeds with timer options. Compatibility with Alexa voice control further enhances convenient operation for heating and cooling year-round.
MilleLoom 12,000 BTU Mini Split Air Conditioner Heat Cool

The MilleLoom 12,000 BTU mini split covers up to 1500 square feet, making it suitable for larger rooms or open areas. It features a powerful compressor combined with heat pump technology, delivering 25% energy savings thanks to innovative inverter technology. Five operation modes, including auto and dry, plus WiFi and Google-compatible control, provide flexible comfort options. The system is designed with robust weather tolerance ranging from -4°F to 140°F for reliable use in all climates.
Buying Guide For Heat And Cool Mini Split Systems
Choosing the right mini split heat and cool system involves several important factors to ensure efficient and effective indoor climate control.
BTU Capacity And Room Size
Select a unit with the BTU rating suitable for your room size. Underpowered units may struggle to maintain comfortable temperatures, while oversized systems can cycle inefficiently. For example, 9,000–12,000 BTU systems suit small to medium rooms, while 18,000 BTU and above are preferable for larger spaces.
Energy Efficiency Ratings
Look for SEER2 and HSPF ratings to gauge efficiency. Higher ratings indicate better energy savings and reduced electricity bills. Inverter technology is a key feature for maintaining efficient operation by adjusting compressor speed instead of frequent on/off cycling.
Heating And Cooling Modes
Verify that the mini split covers all desired operation modes—cooling, heating, dry (dehumidification), and fan-only modes add versatility. Some units include turbo or eco modes for rapid or energy-saving operation.
Installation Requirements
Consider ease of installation and whether the unit is DIY-friendly. Many modern systems come with pre-charged refrigerant lines and complete installation kits. Ensure compatibility with your electrical supply and ongoing maintenance needs.
Controls And Smart Features
Advanced features like WiFi compatibility, smartphone app control, remote operation, and voice assistant integration enhance user convenience. Temperature sensors placed at the remote control, rather than the indoor unit, can allow for more personalized comfort.
Noise Levels
Quiet operation is crucial for bedrooms and living rooms. Check noise ratings (measured in decibels) to avoid disturbances during use.
Environmental Impact
Choose units that use eco-friendly refrigerants like R32 to reduce environmental harm compared to older refrigerants.
Durability And Support Accessories
For outdoor installation, consider sturdy wall brackets to securely mount the outdoor condenser unit and minimize vibration noise. Powder-coated steel brackets withstand weathering and offer extra system protection.