Thermosiphon Passive Solar Water Heater
Passive thermosiphon design relies on natural convection for water circulation between roof collectors and ground-level storage tank, eliminating pumps. Falls under HTS 8419.12.00.00 for nonelectric solar storage water heaters treating water by solar heating.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If collectors made primarily of ceramic materials
Ceramic sanitary ware provisions apply when material composition dictates over function.
If imported as storage tank with solar exchanger only
Separate tanks or heat exchangers classified as parts of water heaters.
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Import Tips & Compliance
• Emphasize 'passive/no electricity required' in all import docs to secure solar water heater status
• Provide hydraulic design schematics showing thermosiphon operation to prevent parts classification
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