Choosing the right mini split system is essential for optimal comfort and energy savings in your home or office. This guide reviews five of the best and largest mini split systems available, focusing on cooling capacity, energy efficiency, and smart features. Whether you need coverage for medium to large spaces or the latest inverter technology, these options provide durable and efficient HVAC solutions.
Product | Cooling Capacity (BTU) | Coverage Area (Sq. Ft.) | Energy Efficiency (SEER Rating) | Special Features |
---|---|---|---|---|
Manastin 12000BTU Mini Split | 12,000 BTU | Up to 750 | 17 SEER2 | Fast cooling/heating, multiple modes, eco-friendly R32 refrigerant |
MRCOOL Easy Pro 18000 BTU | 18,000 BTU | Up to 800 | Not specified | DIY installation, smart WiFi, quiet operation |
DELLA 24000 BTU Mini Split AC | 24,000 BTU | Up to 1500 | 19 SEER2 | Alexa compatible, multiple modes, energy-saving technology |
YITAHOME 18000 BTU Mini Split | 18,000 BTU | Up to 1250 | 19 SEER2 | WiFi & Alexa enabled, health mode, silent operation |
BRAVO 36000 BTU Mini Split AC | 36,000 BTU | Not specified | 17 SEER | Smart app control, heating to -4°F, pre-charged inverter |
Manastin 12000BTU Mini Split Air Conditioner & Heater

The Manastin 12000BTU Mini Split efficiently cools up to 750 sq. ft. and heats rapidly. It boasts advanced inverter technology and uses eco-friendly R32 refrigerant to combine environmental responsibility with cost savings. The unit features five modes, including Turbo, ECO, Sleep, and Silent, plus four fan speeds and a 24-hour timer for versatile control. Its rapid response cooling in 30 seconds and heating in 60 seconds makes it perfect for medium-sized rooms.
MRCOOL Easy Pro 18000 BTU Ductless Mini-Split

This 18,000 BTU MRCOOL Easy Pro system is designed for spaces up to 800 sq. ft. and offers both heating and cooling with quiet operation. The DIY-friendly design reduces installation mess and costs, making it accessible for homeowners. With smart WiFi control, it delivers convenient temperature management remotely. Its inverter technology ensures efficient performance, balancing comfort and energy savings.
DELLA 24000 BTU Mini Split AC With Alexa

The DELLA 24000 BTU unit covers large areas up to 1500 sq. ft., making it one of the biggest mini split options here. Rated at 19 SEER2, it offers significant power savings and works efficiently down to -4°F. It includes multiple smart functions—4D airflow, sleep mode, turbo, eco, and an i-feel sensor—plus Alexa compatibility for voice control. The included installation kit facilitates setup.
YITAHOME 18000 BTU Mini Split Air Conditioner Heat Pump

This YITAHOME 18000 BTU ductless system provides energy-efficient cooling and heating over up to 1250 sq. ft. Certified by ETL and AHRI, it features WiFi connectivity and Alexa compatibility. Five operation modes include health functions like negative ion purification and PM2.5 removal. Its quiet performance, under 47 decibels, ensures minimal indoor noise, complemented by a user-friendly remote and timer settings.
BRAVO 36000 BTU 17 SEER Mini Split AC and Heat Pump

The BRAVO 36000 BTU ductless mini split ranks as the most powerful, suitable for larger spaces needing significant heating and cooling. It features a 17 SEER efficiency rating and is certified by AHRI. The smart port adapter enables remote operation via smartphone or app, providing control over temperature, mode, and fan speed. The system works effectively in temperatures as low as -4°F, suitable for colder climates.
Buying Guide For The Biggest Mini Split Systems
Cooling and Heating Capacity
Determine your room size and heating/cooling needs. Larger spaces require higher BTU ratings. Consider units covering from 750 sq. ft. for medium rooms to over 1500 sq. ft. for bigger areas. Match BTU capacity with your space size for effective temperature control.
Energy Efficiency Ratings
Look for SEER (Seasonal Energy Efficiency Ratio) ratings to estimate energy savings. Higher SEER values, like 17 or 19 SEER2 ratings, indicate better efficiency and reduced operating costs. Also check for HSPF ratings for heating efficiency.
Installation Requirements
Some mini splits offer DIY installation kits (e.g., MRCOOL Easy Pro), while others recommend professional installation. If convenience and cost savings are priorities, choose a unit that supports easy installation.
Smart Features and Controls
Modern mini splits include WiFi connectivity, app control, and voice assistant compatibility (Alexa). These features allow remote access, programmable timers, and mode switching for convenience and energy management.
Noise Levels
Consider systems with quiet operation, especially if installing in bedrooms or offices. Units operating under 50 decibels provide a peaceful environment without compromising comfort.
Modes and Functions
Check available modes such as turbo, eco, sleep, dry, and auto. Some models include air purification functions with negative ions or PM2.5 removal. Multiple fan speeds and smart sensors enhance user experience.
Durability and Warranty
Favor systems with protective coatings on condensers, pre-charged refrigerant, and reliable components. Confirm warranty details for parts and labor to ensure long-term support.