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by the National Mechanical Insulation Committee (NMIC)
Last updated: 11-12-2010
This calculator determines the simple payback period,the annualized rate of return, and the NPV from an insulation project.
Note: Calculator ignores any savings after 20 yrs
Note: Calculator may be used for a single item or an entire project
One of the values is empty, not a number, or lower than zero.