9902.15.64 - Self-contained, portable air conditioning machines, not designed to be fixed to a window, wall, ceiling or floor, with cooling capacity rated at 3.52 kW per hour or more but less than 17.58 kW per hour (provided for in subheading 8415.82.01)

This HTS category, 9902.15.64, specifically addresses self-contained, portable air conditioning units. These units are characterized by their ability to operate independently without being permanently fixed to any part of a building, such as a window, wall, ceiling, or floor. Crucially, the classification is contingent upon the cooling capacity of the unit, requiring it to be rated at 3.52 kW per hour or more, but less than 17.58 kW per hour. The parenthetical reference to subheading 8415.82.01 indicates that these units are ultimately classified under a more general heading for air conditioning machines within Chapter 84, but are subject to special provisions under Chapter 99.

Distinguishing this category from its siblings within Chapter 99 is important. While other categories in Chapter 99 might cover various temporary legislative measures or trade agreement modifications, 9902.15.64 is precisely defined by the physical attributes and performance specifications of a particular type of air conditioning equipment. It does not encompass other classes of goods, such as raw materials, general machinery not meeting the specified cooling capacity, or fixed air conditioning systems. Its sibling categories at the HTS Database Root level would represent entirely different subject matter under the Harmonized Tariff Schedule, such as live animals or other diverse goods, highlighting the broad scope of the HTS system itself.

As this is a leaf node within the HTS, there are no further subcategories to introduce. Classification within 9902.15.64 is definitive based on the product meeting the description of a self-contained, portable air conditioner with the specified cooling capacity range. Importers must ensure their product precisely matches these criteria to avoid misclassification, potentially leading to incorrect duty assessments or delays. The emphasis is on the portable nature and the precise kilowatt cooling output as the primary determinative factors for this specific HTS classification.