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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesBottighofenHjk Hansjörg Keller GmbH
Hjk Hansjörg Keller GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Hjk Hansjörg Keller GmbH provides building-technology services specialising in sanitary/plumbing, heating, sheet-metal roofing (spengler) and solar/photovoltaic systems. Offerings include planning and execution of bathroom new builds and renovations, heating system installation and refurbishment (including heat pumps), photovoltaic installations, sheet-metal work and related maintenance services.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Plumbing work
New-build and bathroom renovations, service work, high-pressure lines, building entry, leak detection with a sewer camera, and drain unblocking work.
Heating work
Heat pumps, underfloor heating, radiators, gas heating, and renovation of the heating system.
Sheet metal work
Edge trims and cladding of all types, fall protection, liquid plastic waterproofing, gutters and downpipes, and flat-roof waterproofing.
Photovoltaic systems
Solar systems on pitched and flat roofs.
Schwank representation
General representation of Schwank in Switzerland.
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4.1/5

Hjk Hansjörg Keller GmbH

Trust & reputation

ranQ Trust Score of Hjk Hansjörg Keller GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Hjk Hansjörg Keller GmbH scores 60.4 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.63.324%
  • 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.45.610%
  • 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%
Hjk Hansjörg Keller GmbH scores 83.0 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%
Hjk Hansjörg Keller GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Hjk Hansjörg Keller GmbH scores 68.6 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 35.68.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Hjk Hansjörg Keller GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.2 out of 5 stars from 5 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
4.2
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.25
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Müligässli 4
8598 Bottighofen
Opening hours
Mon
07:00 - 12:00, 13:15 - 17:00
Tue
07:00 - 12:00, 13:15 - 17:00
Wed
07:00 - 12:00, 13:15 - 17:00
Thu
07:00 - 12:00, 13:15 - 17:00
Fri
07:00 - 12:00, 13:15 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-105.868.489
Founded
1997 · 29 years
Last commercial register change
January 9, 2025
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.
88.0
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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