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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryCrafts & TradesHeating installerBossonnensH&M Dorthe Sàrl
H&M Dorthe Sàrl Logo
Verified· 3 sourcesTrust Score
Summary

About the company

H&M Dorthe Sàrl carries out sheet-metal and roofing work and installs heating and sanitary systems. Its services include roof construction, renovation and maintenance, as well as the installation, servicing and repair of heating and plumbing systems.

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Service area

Offering

Products & services

Industry:Heating installerRoofer
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H&M Dorthe Sàrl

Sheet metal worker
✓ Offered5
Roofing
Roof coverings for flat and pitched roofs, construction, maintenance, renovation and transformation; installation of roof windows, material selection, annual maintenance packages.
Sheet metal work
Sheet metal work for roofs, covering works, installation of gutters, repair and maintenance; cladding of facades, chimney flues and rainwater recovery systems.
Heating
Installation, maintenance, servicing and troubleshooting of heating systems; boilers, heat pumps, underfloor heating, radiators and annual maintenance contracts.
Sanitary installations
Complete installation, renovation and troubleshooting of sanitary installations; bathrooms, bathtubs, washbasins, toilets, showers, jacuzzis, water pipes and annual maintenance.
CECB energy audit
Certified CECB energy audits for all types of buildings; analysis of energy use, inspection of systems, energy modelling and tailored recommendations.
Trust & reputation

ranQ Trust Score of H&M Dorthe Sàrl: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of November 2026

H&M Dorthe Sàrl scores 71.4 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.78.324%
  • 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.55.910%
  • 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%
H&M Dorthe Sàrl scores 86.7 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.70.07%
H&M Dorthe 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%
H&M Dorthe Sàrl scores 11.4 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 35.11.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

H&M Dorthe Sàrl reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 8 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
4.9
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.98
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin de Verdan 30
1615 Bossonnens
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-107.764.524
Founded
1998 · 28 years
Last commercial register change
April 24, 2026
Employees
11 to 20

Active in 1 of 26 cantons

  • FRFribourg
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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