MRCOOL MMCK01 Mini Split Cleaning Care Kit is a maintenance accessory designed to clean and preserve the performance of ductless mini split HVAC systems. It works by using specialized cleaning solutions and tools to remove dust, debris, and microbial buildup from indoor evaporator coils, air filters, and system components. https://www.partshnc.com/mrcoolr-mini-split-cleaning-care-kit-mmck01