Appliage Tool Decodes Appliance Serial Numbers to Estimate Manufacture Year

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A developer has built Appliage, a free web tool that estimates an appliance's manufacture date by decoding its serial number. The tool addresses a common challenge where many brands reuse year codes on a cycle, meaning a single serial number can point to multiple possible years. To narrow results, users can optionally enter a model number, which the tool cross-references against model records to identify the most likely year. Data sources include manufacturer service documents, CPSC recall notices, DOE records, and ENERGY STAR databases, among others. The current version covers 79 brands across appliances, HVAC systems, water heaters, and boilers.

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