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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWater SupplyPorrentruyEntreprise du Gaz S.A. Porrentruy
Entreprise du Gaz S.A. Porrentruy Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Entreprise du Gaz S.A. Porrentruy is a company providing heating, sanitary and water services, offering design, installation, maintenance and technical after-sales support for heating and plumbing systems and the operation of municipal water distribution.

AI-generated
Offering

Products & services

Industry:Water Supply
✓ Offered4
Water Supply Services
Drinking water distribution in Porrentruy, water connections for buildings, construction and maintenance of potable water networks, leak detection, hydrant checks and municipal advice.
Heating Systems
Planning and installation of heating systems, heat pumps, underfloor heating, district heating, wood and pellet systems, heat recovery, gas, condensing oil, and steam and superheated water systems.
Sanitary Installations
Sanitary installations and repairs, bathroom renovations, modern bathrooms, plumbing work, solar hot water production, descaling, water treatment, rainwater recovery and wastewater lifting systems.
Maintenance and Emergency Service
Maintenance of heating, cooling, ventilation, air-conditioning and sanitary systems, fault repairs, 24-hour emergency duty and customised maintenance contracts.
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4.1/5

Entreprise du Gaz S.A. Porrentruy

Trust & reputation

ranQ Trust Score of Entreprise du Gaz S.A. Porrentruy: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Entreprise du Gaz S.A. Porrentruy scores 53.6 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.50.724%
  • 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.40.910%
  • 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%
Entreprise du Gaz S.A. Porrentruy scores 95.0 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.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%
Entreprise du Gaz S.A. Porrentruy scores 85.0 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).85.022%
Entreprise du Gaz S.A. Porrentruy scores 77.1 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 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Entreprise du Gaz S.A. Porrentruy reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.3 out of 5 stars from 4 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
3.3
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle3.34
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Route d'Alle 58
2900 Porrentruy

At a glance

Legal form
Corporation
UID
CHE-107.215.192
Founded
1904 · 122 years
Last commercial register change
April 30, 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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.95.03%
    • Full methodology

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