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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberPerroyALAIN BLANCHARD - CHAUFFAGE
ALAIN BLANCHARD - CHAUFFAGE Logo
Verified· 3 sourcesTrust Score
Summary

About the company

ALAIN BLANCHARD - CHAUFFAGE is a heating installation company providing system design, installation and renovation services and operating its own technical office. It offers maintenance and after-sales service, renewable energy solutions (heat pumps, solar, biomass) and assistance with permit and subsidy applications.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Plumber
✓ Offered6
Studies and advice
Studies of different alternatives for a heating system, advice based on needs and the comfort desired, non-binding quote.
Technical office
Preparation of installation plans, preparation of the documents for the public inquiry and the useful formalities with architects and other stakeholders.
Heating installations and renovations
Installation of new heating systems, execution of the work from start to finish, commissioning, user instructions and follow-up of the installation.
After-sales service
Fast interventions in case of problems with the installation, contact by phone or e-mail for troubleshooting and follow-up.
Heating maintenance
Maintenance, repair and modernisation work: replacement of a boiler or heat pump, thermostatic valves, radiators, leak checks, descaling of the hot-water cylinder.
Renewable energy solutions for heating
Consulting and installation of heat pumps, wood/pellet boilers, solar collectors, and permit and subsidy files.
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4.1/5

ALAIN BLANCHARD - CHAUFFAGE

Trust & reputation

ranQ Trust Score of ALAIN BLANCHARD - CHAUFFAGE: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

ALAIN BLANCHARD - CHAUFFAGE scores 71.9 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.73.724%
  • 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.68.910%
  • 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%
ALAIN BLANCHARD - CHAUFFAGE scores 78.5 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%
ALAIN BLANCHARD - CHAUFFAGE 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%
ALAIN BLANCHARD - CHAUFFAGE scores 6.9 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 35.6.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ALAIN BLANCHARD - CHAUFFAGE reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.6 out of 5 stars from 14 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
4.6
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.614
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin de Palud 27
1166 Perroy
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-106.168.420
Founded
1987 · 39 years
Last commercial register change
March 7, 2014
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • VDPerroy
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.
67.0
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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