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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesFieschRussi Söhne AG
Russi Söhne AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Russi & Söhne AG is building technology, particularly the planning, installation and maintenance of sanitary and heating systems, as well as the construction of high-pressure pipelines for hydroelectric power plants. The company also offers services for the new construction, renovation and repair of bathrooms, kitchens and heating systems.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Plumbing work
Plumbing work for new builds, conversions and renovations in single- and multi-family houses as well as residential developments; repairs, emergency call-outs, pipe cleaning, boiler servicing and boiler cleaning.
Bathroom remodelling
Bathroom remodelling with plumbing work, including new builds and conversions of showers, washbasins, WC systems, as well as planning and execution of bathrooms.
Heating system work
Heating system work in building services, in particular repairs and work related to heating systems for new builds, conversions and emergencies.
High-pressure pipelines for hydropower plants
Planning and construction of high-pressure pipelines for hydropower plants in Oberwallis, as a specialized infrastructure offering by the building services company.
Water supply pipelines and service connections
Water supply pipelines and service connections, as well as cleaning and repair of cold water, hot water and wastewater pipes.
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3.9/5

Russi Söhne AG

Trust & reputation

ranQ Trust Score of Russi Söhne AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Russi Söhne AG scores 49.0 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.62.524%
  • 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.27.910%
  • 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.35.08%
Russi Söhne AG scores 85.5 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%
Russi Söhne AG 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%
Russi Söhne AG scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Russi Söhne AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle42
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Furkastrasse 23
3984 Fiesch
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.001.308
Founded
1980 · 46 years
Last commercial register change
April 13, 2023
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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