i4o integrates the only validated solver for indoor air chemistry, born from an ADEME research project. Optimised, open and usable directly from your BIM workflow.
CO₂, TVOC, formaldehyde (HCHO), PM2.5, PM10, NO₂, O₃, relative humidity. 1,000 pollutants, 2,000 chemical reactions modelled.
Enter an address: i4o retrieves the annual data (NO₂, O₃, PM10, PM2.5) with 100 m accuracy across Europe. Choose the most representative simulation period.
Data from IRSN (France), JRC (Europe), US EPA (USA). View the radon risk level right from the site analysis.
Built-in verification assistant. Get a certifiable PDF report, ready to submit to the certification body.
Create and manage your organisation's own material library: name, category, brand, emission data per pollutant, test report as an attachment. Shared across all members of your team.
From an existing result, run a variant by changing materials, ventilation flow rates or filtration — without starting again from the plugin. Compare scenarios side by side.
Time series, heat maps, scatter plots, pie charts. Min/mean/max table per pollutant. Filtering by room, by pollutant, comparison between simulations.
80 % faster thanks to solver optimisation and parallelisation. About 6 seconds of computation per room outside of saturated queue periods.
Expiry date visible from the navigation bar. Automatic alerts at D-30 and D-7. Read access kept after expiry.
No credit card required. A few minutes are enough to evaluate i4o on one of your buildings in design.
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