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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesOftringenC. Graf Sanitär GmbH
C. Graf Sanitär GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of C. Graf Sanitär GmbH is the provision of sanitary services, in particular: planning and installation of modern bathrooms, installation of energy-efficient domestic hot water heat pumps, boiler installations, bathroom renovations, and service and repair of sanitary facilities. The company also offers personal consultation and free telephone consultation to individually support customers.

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Offering

Products & services

Industry:Plumbing & Building Services
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4.3/5

C. Graf Sanitär GmbH

✓ Offered3
Water heater installations
Consulting, planning, installation and commissioning of water heaters; replacement and modernisation, water heater descaling, service and repairs including dismantling and proper disposal.
Bathroom renovation
Consulting and design, material selection as well as complete bathroom renovation; dismantling, installation and, on request, coordination of all required trades.
Service and maintenance
Repairs to sanitary installations, general plumbing work, installation of fittings and shower toilets as well as descaling of cisterns.
Trust & reputation

ranQ Trust Score of C. Graf Sanitär GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

C. Graf Sanitär GmbH scores 90.7 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.88.624%
  • 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.92.510%
  • 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.95.08%
C. Graf Sanitär GmbH scores 67.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.64.612%
  • 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%
C. Graf Sanitär GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).85.022%
C. Graf Sanitär GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

C. Graf Sanitär GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 37 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
4.9
of 5

Aggregated from 37 reviews across all connected sources

Sources
GGoogle4.937
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Finsterthüelen 1
4665 Oftringen
Opening hours
Mon
06:00 - 20:00
Tue
06:00 - 20:00
Wed
06:00 - 20:00
Thu
06:00 - 20:00
Fri
06:00 - 20:00
Sat
07:00 - 16:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-455.799.679
Founded
2021 · 5 years
Last commercial register change
August 10, 2023
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.
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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