Choosing the best multi zone ductless mini split system can transform your home climate control with energy-efficient and customizable heating and cooling. These systems allow for independent temperature control in multiple rooms, ideal for diverse preferences and varying usage. Below is a summary table of top-rated mini split systems for multi zone use, highlighting their key features and cooling capacities.
Model | BTU Capacity | Zones | Energy Efficiency | Special Features |
---|---|---|---|---|
DELLA 18K BTU 2 Zone | 18,000 BTU | 2 | 19 SEER2 | Alexa compatible, heat pump, DIY installation kit |
COSTWAY 18K Dual Zone | 18,000 BTU | 2 | 22 SEER2 | Wi-Fi enabled, R32 refrigerant, Energy Star |
Cooper & Hunter 28K 3 Zone | 28,000 BTU | 3 | 24.6 SEER2 | Smartphone control, whisper quiet, heat pump |
COSTWAY 30K Quad Zone | 30,000 BTU | 4 | 23 SEER2 | Wi-Fi, multiple modes, low GWP refrigerant |
SIMOE 18K Dual Zone | 18,000 BTU | 2 | 22 SEER2 | Alexa & Google compatible, heat as low as -13°F |
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DELLA 18K BTU ODU 2 Dual Zone Mini Split AC

This Della 18K BTU Dual Zone Mini Split offers efficient cooling and heating with a 19 SEER2 rating and DC Inverter technology, enabling up to 30% power savings. It supports individual temperature settings through two 9,000 BTU indoor air handlers, ideal for separate rooms. The pre-charged heat pump supports operation down to -4°F, making it suitable for colder climates. Included are 16ft copper pipes and installation kits, simplifying setup. It works with Alexa for voice control but does not support self-cleaning function despite display options.
COSTWAY 18k Dual 2 Zone Mini Split AC & Heat Pump

The COSTWAY 18K Dual Zone model provides adaptable cooling with two 9,000 BTU indoor units and 22 SEER2 energy efficiency. Certified by Energy Star, it uses environmentally friendly R32 refrigerant and inverter technology for reliable performance and low global warming potential. It operates effectively in climates ranging from -13°F to 125°F. Features include six operation modes and five fan speeds, enhancing user comfort and adaptability.
Cooper & Hunter 28,000 BTU, 3 Zone Ductless Mini Split

The Cooper & Hunter 28K BTU system supports three zones, each with individual 9,000 BTU indoor handlers. Delivering a high 24.6 SEER2 rating, it functions well in heating or cooling even at temperatures as low as -13°F. UL Listed and AHRI Certified, this system integrates smart port adapters enabling smartphone-based control of each zone via the C&H Remote app. Whisper technology ensures quiet operation suitable for bedrooms or living rooms.
COSTWAY 30k Quad 4 Zone Mini Split AC Heat Pump

This COSTWAY 30K Quad Zone Mini Split features four indoor units varying from 9,000 to 18,000 BTU for comprehensive multi-room temperature control. With a 23 SEER2 energy rating and R32 refrigerant, it balances power savings and environmental impact. The system supports a wide range of operation modes and adjustable fan speeds, ensuring personalized comfort. The chassis heating feature protects components during low ambient temperatures from -13°F upward.
SIMOE 18K Dual 2 Zone Mini Split AC Heat Pump

The SIMOE 18K Dual Zone Mini Split delivers 22 SEER2 efficiency with two 9,000 BTU indoor units and an 18,000 BTU outdoor unit. Alexa and Google Assistant compatibility provides convenient voice and remote control. It functions effectively in extreme climates down to -13°F and includes DC inverter technology for superior energy savings. Multiple temperature settings and pre-charged installation kits make it user-friendly and efficient for two-room cooling and heating.
Buying Guide for Multi Zone Ductless Mini Split Systems
When selecting a multi zone ductless mini split system, consider several critical factors to ensure ideal performance and value for your home or business:
Cooling and Heating Capacity
Match the BTU ratings to your room sizes and number of zones. Larger spaces or more zones require higher total capacity. Typical residential zones range from 9,000 to 18,000 BTU per indoor unit.
Energy Efficiency Ratings
Look for SEER2 and HSPF2 ratings indicating cooling and heating efficiency. Higher ratings mean lower energy consumption and cost savings over time. Energy Star certification is a sign of efficiency.
Installation and Maintenance
Check if the system comes pre-charged with refrigerant and includes installation kits. Some models support DIY installation, while others may require professional service. Consider ease of maintenance features like self-cleaning or accessible filters.
Climate Compatibility
Ensure the heat pump operates well in your local climate, especially if you experience very low temperatures. Some models can heat efficiently down to -13°F, which is vital for colder regions.
Control Features
Remote control capabilities, Wi-Fi connectivity, and voice assistant support offer convenient operation. Independent zone controls let each room maintain personalized temperatures, enhancing comfort.
Environmental Impact
Systems using low Global Warming Potential (GWP) refrigerants such as R32 are preferable for sustainability. Certification by ETL and AHRI ensures compliance with industry standards.
Evaluate your home’s layout and energy needs carefully to select a multi zone ductless mini split system that provides flexible, efficient comfort for every zone.