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NC State Extension

Barn Testing Information

The U.S. Tobacco Good Agricultural Practices (GAP) Program currently requires all curing barn heat exchangers to be tested for combustion product leaks every three years. Barn testing can be conducted by independent third-party companies or individual growers that have attended a Cooperative Extension training. The optimum time to check your heat exchangers for leaks would be immediately after the curing season, before the electrical and fuel supply are shut down during the off season. This would also allow sufficient time to correct any heat exchanger issues prior to next season. Additional information about the recommended barn testing equipment and procedures can be obtained from your county Extension Center.