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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesChailly-MontreuxDumas-Kessler Chauffage SA
Dumas-Kessler Chauffage SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Dumas-Kessler Chauffage SA provides installation and service for heating, sanitary and renewable energy systems. Services include planning, installation, renovation and maintenance of heating systems (heat pumps, solar thermal/photovoltaic, biomass, gas/oil condensing boilers), sanitary installations, water treatment, descaling and leak detection.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered6
Heating installations
Heating installations for homes, with radiator heating, floor heating, plinth heating, and radiant heating to the ceiling or wall.
Sanitary installations
Sanitary work for homes: sanitary fittings, introduction of cold water, installation of sanitary appliances, connections for cold and hot water, kitchen connection and replacement of taps and fittings.
Bathroom renovation
Bathroom transformation, with adaptation of the sanitary installations and installation or replacement of the equipment related to the bathroom layout.
Sanitary troubleshooting and maintenance
Troubleshooting, leak detection, descaling and maintenance of water heaters, as well as replacement of taps and fittings.
Renewable heating solutions
Heating solutions using thermal solar energy, photovoltaic, biomass and heat pump, including the associated installations for heat production.
Condensing gas and oil boilers
Heating installations using fossil energy, with condensing boilers for gas and oil, including possible combination with solar collectors.
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4.0/5

Dumas-Kessler Chauffage SA

Trust & reputation

ranQ Trust Score of Dumas-Kessler Chauffage SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Dumas-Kessler Chauffage SA scores 60.0 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.60.024%
  • 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.45.610%
  • 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.78.08%
Dumas-Kessler Chauffage SA scores 84.6 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.97.712%
  • 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%
Dumas-Kessler Chauffage 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%
Dumas-Kessler Chauffage SA scores 10.0 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 35.10.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dumas-Kessler Chauffage SA reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 5 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
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle45
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin de la Rottaz 3
1816 Chailly-Montreux

At a glance

Legal form
Corporation
UID
CHE-235.221.703
Founded
2012 · 14 years
Last commercial register change
December 9, 2019
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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