Ekotrope CODE
Pass energy code without overbuilding
Ekotrope CODE is the purpose-built Total UA calculator that shows you every way to hit compliance, so you can swap a window spec, optimize an insulation choice, and still pass. For builders, architects, and engineers.
✓ No credit card required
Trusted by the Energy Rating Industry
2M+ homes rated in Ekotrope
Used by 5,000+ HERS Raters
See every path to compliance. Pick the best one. Compliance optimized for cost, not just code
Every assembly. Every alternative. Every passing margin laid out in one view. Click any cell to swap it in and watch your compliance score recalculate live.
Built for the way you actually work.
No spreadsheets. No guesswork. Just the cleanest way to model an envelope, evaluate options, and ship the report.
Instant recalculation
Swap an assembly and watch every cell, score, and pass/fail indicator update in real time.
Clear pass/fail at every step
Green means you're passing. Red means you're not. No interpretation. No surprises at submittal.
Jurisdiction-specific logic
State and local code variants are built in. Pick your jurisdiction; we apply the right rules.
Optimized for cost, not just code
Find the lowest cost compliance package, not the just first one that passes.
Trusted permit reports
Ekotrope permit reports are accepted by code officials for thousands of homes each week.
Always current
Codes change. We track adoptions and amendments and update the rules so you don't have to.
Try it for Free!
Ekotrope Code is free to use — no commitment. Sign up to get your account login to evaluate your building plans and generate your first compliance reports.