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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkLucerneAlois Herzog AG. Spenglerei und sanitäre Anlagen
Alois Herzog AG. Spenglerei und sanitäre Anlagen Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Alois Herzog AG is the planning, execution and maintenance of sanitary and plumbing work, including new buildings, conversions, repairs and maintenance work, as well as the installation of solar systems and lightning protection systems.

AI-generated
Offering

Products & services

Industry:Sheet Metal Work
✓ Offered7
Sanitary installations
New builds and conversions of sanitary systems, planning and execution of sanitary installations, prefabrication in the workshop, coordination and implementation from a single source.
Sanitary service
Repairs and maintenance work on sanitary installations, service calls with fully equipped service vehicles, handling during office hours.
24-hour emergency service
24-hour emergency service for urgent damage to sanitary installations, reachable for emergencies day and night.
Sheet metal work
New builds and conversions as well as maintenance work in the pitched roof sector and general sheet metal work, including sheet metal repairs.
Bathroom conversion and renovation
Bathroom renovations and new construction of dream bathrooms, initial consultation, 3D planning, visualization, coordination, budgeting, as well as implementation and construction management.
Solar systems
Planning and realization of solar systems as an additional installation and fit-out service in the building sector.
Lightning protection systems
Planning and installation of lightning protection systems as part of new builds, conversions and maintenance work.
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4.4/5

Alois Herzog AG. Spenglerei und sanitäre Anlagen

Trust & reputation

ranQ Trust Score of Alois Herzog AG. Spenglerei und sanitäre Anlagen: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Alois Herzog AG. Spenglerei und sanitäre Anlagen scores 78.0 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.75.024%
  • 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.77.410%
  • 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%
Alois Herzog AG. Spenglerei und sanitäre Anlagen scores 93.9 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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%
Alois Herzog AG. Spenglerei und sanitäre Anlagen 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%
Alois Herzog AG. Spenglerei und sanitäre Anlagen scores 8.6 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 35.8.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Alois Herzog AG. Spenglerei und sanitäre Anlagen reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 20 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
4.6
of 5

Aggregated from 20 reviews across all connected sources

Sources
GGoogle4.620
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Tribschenstrasse 72
6005 Lucerne
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.959.703
Founded
1981 · 45 years
Last commercial register change
July 31, 2023
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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