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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesGettnauElmar Röhner AG
Elmar Röhner AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Elmar Röhner AG provides services for tank systems, rainwater utilisation and concrete drilling and milling. Services include tank revisions, tank removal and new tank installations, design and installation of rainwater systems, and core drilling, milling and structural reinforcement. The company also performs tank inspections, internal cleaning, leak-detection device checks and related regulatory testing.

AI-generated
Offering

Products & services

Industry:Specialized Construction Activities
✓ Offered3
Fuel storage tanks
Tank revision, tank dismantling and new tank installations for heating oil, diesel, petrol, AdBlue and other water-hazardous liquids; planning, delivery, installation, inspection, cleaning and maintenance.
Rainwater harvesting
Rainwater harvesting for roof water: consultation and planning, supply of components, installation and commissioning, cleaning of rainwater tanks as well as maintenance, servicing and repairs.
Concrete drilling and milling
Low-vibration drilling, core drilling, openings and cut-throughs, test drilling, concrete cutting and milling, wire sawing, and static strengthening of structures.
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4.0/5

Elmar Röhner AG

Trust & reputation

ranQ Trust Score of Elmar Röhner AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 100% · As of October 2026

Elmar Röhner AG scores 60.6 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.65.024%
  • 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.58.610%
  • 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.50.08%
Elmar Röhner AG scores 93.9 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.100.012%
  • 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.82.07%
Elmar Röhner AG 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%
Elmar Röhner AG scores 14.3 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 35.28.64%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Elmar Röhner AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 9 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.39
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

March 19, 2026Media
Vom Himmel in den Tank
willisauerbote.ch

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Location

Luthernmatte 1
6142 Gettnau

At a glance

Legal form
Corporation
UID
CHE-109.063.697
Founded
2001 · 25 years
Last commercial register change
September 10, 2026
Employees
21 to 50
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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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