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

About the company

The core activity of Lehner SA includes the installation, maintenance and repair of sanitary facilities, heating systems, roofs and sheet metal work. The company offers services to private individuals and businesses in the following areas: sanitary installations, heating, roofing and sheet metal work. The company also provides emergency services (24/7 breakdown service).

AI-generated
Offering

Products & services

Industry:Roofing
✓ Offered3
Sanitary Installations
Sanitary installations for residential, commercial and industrial buildings, including bathroom renovations, water and fluid piping, water treatment, and wastewater and lifting systems.
Heating Installations
Heating installations for new builds and renovations, including boiler-room refurbishments, networks for hotels, industry and hospitals, plus maintenance, modifications and assessments.
Roofing and Sheet Metal Work
Roofing and sheet metal work for new construction and renovation, including flashings, gutters, downpipes, roof coverings, thermal insulation, waterproofing and maintenance.
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4.5/5

Lehner SA

Trust & reputation

ranQ Trust Score of Lehner SA: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Lehner SA scores 85.3 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.80.924%
  • 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.93.810%
  • 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.88.08%
Lehner SA scores 95.5 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.82.07%
Lehner 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%
Lehner SA scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Lehner SA reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 39 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
4.7
of 5

Aggregated from 39 reviews across all connected sources

Sources
GGoogle4.739
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Avenue du Rothorn 26
3960 Sierre
Opening hours
Mon
08:00 - 11:45, 13:30 - 17:00
Tue
08:00 - 11:45, 13:30 - 17:00
Wed
08:00 - 11:45, 13:30 - 17:00
Thu
08:00 - 11:45, 13:30 - 17:00
Fri
08:00 - 11:45, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.755.164
Founded
1999 · 27 years
Last commercial register change
July 2, 2026
Employees
21 to 50
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.100.03%
    • Full methodology

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