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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialist foundation engineeringMeyrin1AirSup Sàrl
1AirSup Sàrl Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of 1AirSup Sàrl consists of expertise and management of environmental pollutants in buildings, particularly in the Swiss Romandy region. This includes: * Diagnostics and analysis of environmental pollutants such as asbestos, lead, PCB, HAP, and HBCD in buildings * Conducting measurements and tests to determine the concentration of environmental pollutants * Preparation of expert reports and analyses on the results of diagnostics and analysis * Planning and implementation of remediation and decontamination work in buildings contaminated with environmental pollutants * Monitoring and control of construction sites to ensure compliance with environmental and safety standards The company offers its services primarily to private individuals, architects, engineers, public services, and property management companies.

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1AirSup Sàrl

Offering

Products & services

Industry:Specialist foundation engineering
✓ Offered4
Asbestos, PCB, HAP, lead, HBCD diagnostics
Building pollutant diagnostics before work, in particular asbestos, PCB, HAP, lead and HBCD, carried out for buildings and sites in French-speaking Switzerland.
Clearance measurements
Clearance measurements after remediation or works, to verify the absence of residual contamination and to authorise the resumption of activities.
Work supervision
Work supervision for interventions related to building pollutants, with coordination of operations on site.
Site monitoring
Site monitoring during interventions on contaminated buildings, with control of progress and execution of the works.
Trust & reputation

ranQ Trust Score of 1AirSup Sàrl: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

1AirSup Sàrl scores 72.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.79.424%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.52.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
1AirSup Sàrl scores 65.0 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.58.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
1AirSup Sàrl scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
1AirSup Sàrl scores 4.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.4.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

1AirSup Sàrl reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 7 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Route de Meyrin 267
1217 Meyrin
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
09:00 - 17:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-369.635.115
Founded
2022 · 4 years
Last commercial register change
April 1, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • GEMeyrin
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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