Liquid chillers classification turns on essential function, with refrigeration heading applying despite air-conditioning use.

Liquid chillers are to be classified by their essential function under the tariff scheme, with reference to the HSN Explanatory Notes and the rule that a machine is placed in the heading appropriate to its principal use. The document states that chillers designed to produce chilled water for industrial cooling, including use in central air-conditioning systems, may still fall under the refrigeration heading where their essential function is refrigeration. It further notes that capability for other cooling applications does not alter classification when refrigeration remains dominant, and that Customs and Central Excise Tariffs are treated as pari materia for this purpose. On that basis, liquid chillers were placed under Heading 8418 rather than Heading 8415.

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Issues: Whether the imported liquid chillers were classifiable under Heading 8415 as air-conditioning machinery or under Heading 8418 as refrigeration equipment.

Analysis: The imported goods were liquid chillers designed to produce chilled water for use in industrial applications, including central air-conditioning systems. Their classification had to be determined with reference to the tariff scheme, the HSN Explanatory Notes, and the statutory rule that parts or machines are to be classified according to their essential function and the heading appropriate to that function. The material showed that the chillers could also be used for low-temperature brine and other cooling applications, and prior Tribunal authority had already upheld similar liquid chillers under Heading 8418. The Customs Tariff and Central Excise Tariff were treated as pari materia for this purpose.

Conclusion: The goods were correctly classifiable under Heading 8418 and not under Heading 8415; the Revenue's appeal failed.

Ratio Decidendi: Liquid chillers whose essential function is refrigeration and production of chilled liquid are classifiable under the refrigeration heading, even if they are capable of use in a central air-conditioning system.

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