3 Ton Ductless Mini split air conditioners feature a 36000 BTU Capacity which can cool or heat a total of 1500 square feet.  36,000 BTU capacity is the largest mini split zone output in the general range category.  However, most of the below systems are dual-zone, tri-zone and quad-zone which means the capacity will be divided accordingly. All the below 3 ton ductless systems come pre-charged with either R410 or R22 freon and include a digital remote and installation kit but they differ in features and price.