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Find the lowest-cost path to code compliance.
Ekotrope CODE is a new Total UA/TC compliance calculator for IECC & state codes. Explore envelope trade-offs with no clicks, optimize project costs, and generate trusted permit-ready reports.
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Why Ekotrope?
See envelope trade-off options in one table and find the best compliance pathway in seconds.
Generate permit-ready reports accepted by code officials nationwide.
Built-in logic for all IECC versions and 50+ locally amended energy codes.
See it in action
The Trade-off Explorer
Click any cell to swap a building assembly. Watch the compliance result update instantly — find your lowest-cost path to PASS.
Climate Zone 4A
Click any cell to swap an assembly. Green cells improve compliance; red cells hurt it.
Frequently Asked Questions
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Yes. Ekotrope CODE calculates the same Total UA / Total TC pathway that REScheck calculates.
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IECC 2006 through 2024, plus state-specific amendments. Find the full list here (https://www.ekotrope.com/code-official-resources)
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Yes. Ekotrope permit reports are accepted by jurisdictions across the country. Ekotrope reports are used on >400,000 homes annually.
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REScheck supports a limited set of energy codes. Ekotrope CODE supports many more and adds new codes quickly. Ekotrope Code supports innovative tools like the Tradeoff Explorer.