8415.10 - Of a kind designed to be fixed to a window, wall, ceiling or floor, self-contained or “split system”:

HTS Code 8415.10 specifically classifies air conditioning machines designed for fixed installation in a window, wall, ceiling, or floor. This category encompasses units that are either "self-contained," meaning all functional components are housed within a single cabinet, or "split systems," where the evaporator and condenser units are separate but connected. These machines are characterized by their integrated motor-driven fan and elements for altering temperature and humidity, with the crucial distinction that humidity regulation, if present, is not separately controlled from temperature.

This classification is differentiated from its sibling category, 8415.20.00.00, which is exclusively for air conditioning units designed for use in motor vehicles. It also stands apart from the "Other" category at this level, which would generally encompass air conditioning machines not meeting the fixed installation criteria of 8415.10 or the specific vehicle application of 8415.20.00.00. The "Parts" category (8415.90) is reserved for individual components of air conditioning machines, rather than complete units.

Within HTS 8415.10, further subdivision occurs based on the construction of the unit. The subcategory "8415.10.30" is designated for "Self-contained" units, where all essential air conditioning functions are contained within a single, integrated housing. The remaining subcategories at this level ("Other:") are intended for those machines that are not self-contained but still meet the fixed installation criteria, typically referring to split systems.