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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMontheyAvanthey SA
Avanthey SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Avanthey SA is a building-services company that designs, installs and services heating, sanitary and ventilation systems. Its offerings also include sheet-metal roofing and roof coverings, solar thermal and photovoltaic installations, and project coordination for new construction and renovation works.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Heating
Heating for villas, new buildings, apartment building renovations and small installations; design and installation of systems, connection to the district heating network, coordination of work, controlled ventilation and air conditioning.
Plumbing
Sanitary plumbing for bathrooms, villas, rental properties and commercial buildings; alterations and renovations, design of tailor-made installations, coordination of trades, service and maintenance, leak detection and descaling of water heaters.
Sheet metal work / roofing
Sheet metal work and roofing for sealing of roofs and façades; flashings, cappings, cladding for dormers, valley gutters, rainwater downpipes, protective cladding of wind-guards and drip edges, installation of solar panels or photovoltaic tiles.
Solar thermal and photovoltaics
Solar thermal for domestic hot water and heating support; photovoltaic solar for generating electricity, self-consumption, storage, grid injection, assessment, installation and commissioning.
Energy certifications and labels
Support for Chauffez renouvelable, CECB and PAC Système-Module; certifications and standards related to replacing fossil heating systems, energy assessment of buildings and the integration of heat pumps.
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3.9/5

Avanthey SA

Trust & reputation

ranQ Trust Score of Avanthey SA: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Avanthey SA scores 56.5 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.68.224%
  • 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.17.610%
  • 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.70.08%
Avanthey SA scores 80.4 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.79.212%
  • 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%
Avanthey SA 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%
Avanthey SA scores 9.4 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 35.9.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Avanthey SA reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★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 de Larret 19
1870 Monthey
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-225.709.423
Founded
2018 · 8 years
Last commercial register change
May 13, 2024
Employees
11 to 20
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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