Indoor air quality simulation
Saint-Étienne, AURA

Indoor air quality simulation in Saint-Étienne with INDALO: documenting the IAQ requirements of the HQE, BREEAM and NF Habitat certifications from the design stage.

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Updated 16 July 2026

Saint-Étienne · Auvergne-Rhône-Alpes

Indoor air quality simulation in Saint-Étienne.

In Saint-Étienne, the projects likely to pursue certification mainly involve major refurbishment of the old building stock and social housing, a context in which indoor air quality depends almost entirely on the ventilation system that can be installed in an existing building, and on the specification of finishes. The simulation with INDALO estimates the predicted concentrations according to these choices and provides the technical justification required in the file, before works begin. This is a design-stage study, not an on-site measurement campaign.

In Saint-Étienne, the indoor air quality of a new building is decided at the design stage, through two levers: the specification of products according to their emissions health labelling and the design of the ventilation. The simulation estimates the predicted concentrations and produces the technical justification expected by certification schemes, before choices are locked in.

Our services

Indoor air quality simulation in Saint-Étienne: what we do.

IAQ simulation at design stage (INDALO, IZUBA énergies)

Product specification based on emissions health labelling

Ventilation design and verification

Indoor air quality plan (BREEAM Hea 02 prerequisite)

Justification of HQE and NF Habitat requirements

Coverage area

Indoor air quality simulation in Saint-Étienne and the surrounding area.

Our teams travel from Aix-en-Provence to Saint-Étienne and the neighbouring municipalities of the 42 department.

Saint-Étienne
Saint-Chamond
Firminy
Rive-de-Gier
Le Chambon-Feugerolles
Saint-Just-Saint-Rambert
Roche-la-Molière

Scope

The indoor air quality simulation builds on the ventilation design: airflow rates, sweeping principle, filtration and air-intake positioning are all sized by our MEP engineering office.

See ventilation and MEP engineering →

FAQ

FAQ, indoor air quality simulation in Saint-Étienne

No. Our service is a simulation carried out at the design stage, using the INDALO tool from IZUBA énergies. We carry out no on-site air sampling or analysis. Measurement campaigns, in particular those required by the regulatory monitoring of public-access buildings, fall to accredited bodies and lie outside our scope.
It is there to inform decisions. It estimates the predicted concentrations according to the specified materials, the ventilation system and the occupancy scenarios, and makes it possible to compare variants before choices are locked in. It also produces the technical justification expected by the schemes, including the indoor air quality plan required as a prerequisite by BREEAM Hea 02.
HQE Bâtiment Durable on the sanitary air quality aspect, BREEAM Hea 02 for the IAQ plan required from the design stage, and NF Habitat / NF Habitat HQE on the indoor air profile. On the other hand, schemes that require an on-site measurement before occupancy, such as DGNB SOC1.2 or the WELL preconditions, additionally call for a measurement provider. Requirements depend on the version of the applicable scheme.

Other locations

Indoor air quality simulation across the region.

NORMAXIS in Auvergne-Rhône-Alpes Indoor air quality simulation in Lyon Indoor air quality simulation in Grenoble Indoor air quality simulation in Clermont-Ferrand Indoor air quality simulation in Annecy Indoor air quality simulation in Chambéry Indoor air quality simulation in Valence

A project in Saint-Étienne? Let's talk.

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