Profile: All Four Seasons Ltd. specializes in the design, supply, installation and maintenance of air conditioning equipment. Our product line includes split or multi-type, VRV / VRF, and wall mounting systems. Our multi-split air conditioner is a system that has one outdoor unit and multiple indoor units. The indoor units can be wall mounted splits, floor, or ceiling consoles, or even ducted bulkheads, which can be concealed in small spaces. Our ducted air conditioning systems are the state of the art in heating and cooling the whole building. Our ducted systems are very quiet, with the noise inside being less than normal background noise. This is because the main air handling is installed up inside the roof cavity, with long ducts connecting it to the rooms.