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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionCastelrottoTank Müller SA
Tank Müller SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Tank Müller SA provides inspection, sealing and maintenance services for fuel oil tanks, including alarm-system checks, sandblasting cleanings and related services for tank installation and decommissioning.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered4
Tank revision
Periodic inspection of fuel-oil installations, complete cleaning of the tank and the room, grinding and internal coating/paintwork, commissioning and final report.
Waterproofing
Rehabilitation of containment basins with complete cleaning, protective levelling layer, new waterproofing membrane and stainless-steel profiles.
Alarm inspection
Every-two-years periodic inspection and maintenance of the leak indicator for underground tanks, including verification of the alarm system and support at the due date.
Sandblasting cleaning
Sandblasting work for cleaning and renewing surfaces made of stone, wood, ferrous materials and metals, carried out on site or in prepared premises.
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4.0/5

Tank Müller SA

Trust & reputation

ranQ Trust Score of Tank Müller SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Tank Müller SA scores 60.4 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.70.824%
  • 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.27.910%
  • 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.70.08%
Tank Müller SA scores 85.5 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.55.07%
Tank Müller SA scores 83.3 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).83.322%
Tank Müller SA scores 8.0 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 35.8.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Tank Müller SA 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 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hier entsteht die Karte
Madonna del Piano
6980 Castelrotto

At a glance

Legal form
Corporation
UID
CHE-108.125.870
Founded
1983 · 43 years
Last commercial register change
June 30, 2021
Employees
1 to 10
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.70.03%
    • Full methodology

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