RED Calc Free

v1.0, Legacy Tool

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You can use RED Calc Pro for 30 days free!

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  • If you think RED Calc Pro is not for you, you may cancel your subscription during the free-trial period, no charge, no fees.

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Free Tool Summary: The Depressurization Analysis “solve all” tool allows you to solve for “Building leakage @ 50Pa” (DTL), “Exhaust flow” of exhausting appliances, or “Depressurization” (combustion appliance depressurization limit). See Tool Guide. Click on any input or result label for help. By using this tool (application) you agree to the Terms of Use.

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This legacy tool is NOT optimized for mobile devices. Stay tuned for the mobile-optimized version.