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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsGümmenenBernhard Lenz
Bernhard Lenz Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Lenz Ofenbau is the planning, consulting, installation, repair and maintenance of fireplaces, tile and soapstone stoves as well as oil stoves. Additionally, the company offers a comprehensive range of accessories and spare parts for these products.

AI-generated
Offering

Products & services

Industry:Specialized Construction Installations
✓ Offered5
Fireplace renovations
Fireplace renovations with custom glass fronts or hot-air inserts in various colours; solutions for fireplaces that don't draw, smoke or heat too little.
Stoves
Delivery, installation and maintenance of selected fireplace stoves from various manufacturers.
Spare parts for stoves
Various spare parts for different stoves, partly from stock; advice when searching for older or no longer available parts.
Fireplace and hearth accessories
Selected range available from stock with fireplace accessories, spark screens, bellows, log supports, fire grates and accessories for hearths and grills.
Fireplace and stove accessories (shop)
Firelighters, cleaning, fireplace tool sets, log holders, ash shovels, log supports, grill and fireplace accessories, and other stock items.
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3.8/5

Bernhard Lenz

Trust & reputation

ranQ Trust Score of Bernhard Lenz: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Bernhard Lenz scores 49.8 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.35.08%
Bernhard Lenz 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%
Bernhard Lenz 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%
Bernhard Lenz scores 45.7 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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bernhard Lenz reaches a ranQ Trust Score of 3.8 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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Location

Hapfernweg 6b
3205 Gümmenen

At a glance

Legal form
Sole proprietorship
UID
CHE-101.570.803
Founded
1989 · 37 years
Last commercial register change
April 22, 2021
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.
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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