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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkZäziwilStalder AG Sanitär Spenglerei Heizung
Stalder AG Sanitär Spenglerei Heizung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Stalder AG in Zäziwil encompasses the provision of services in the field of sanitary and heating technology, including the installation, maintenance and repair of sanitary facilities, heating systems, solar systems and lightning protection systems. Furthermore, the company also offers plumbing services, the installation of Prefa roofs and the maintenance of flat roofs.

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Offering

Products & services

Industry:Sheet Metal WorkSolar & Photovoltaics
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4.2/5

Stalder AG Sanitär Spenglerei Heizung

✓ Offered6
Sanitary installations
Sanitary installations for new builds and renovations, bathrooms, showers, washbasins, WC systems and custom-made solutions; also water supply, descaling of boilers and water softening.
Heating installations
Heating installations and replacement of existing systems; consultation on pellet boilers, heat pumps, ground-source heat pumps, underfloor heating, heat storage tanks, heat distribution and district heating.
Sheet metal work
Sheet metal work for roofs and building envelope; measuring, making, bending, soldering, seaming, swaging, filing and punching as well as dormers, roof windows, chimney and ridge cappings.
Flat roofing works
Flat roofing works within sheet metal work; installation of flat roofs and associated sheet metal and covering works.
Lightning protection systems
Lightning protection systems as an additional service in the field of sheet metal work and building envelope.
Reservoir covers
Reservoir covers as a specialized sheet metal work for coverings and custom-made solutions.
Trust & reputation

ranQ Trust Score of Stalder AG Sanitär Spenglerei Heizung: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

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Data basis 96% · As of October 2026

Stalder AG Sanitär Spenglerei Heizung scores 77.9 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.80.724%
  • 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.63.210%
  • 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%
Stalder AG Sanitär Spenglerei Heizung scores 82.3 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.92.512%
  • 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%
Stalder AG Sanitär Spenglerei Heizung scores 83.3 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).83.322%
Stalder AG Sanitär Spenglerei Heizung scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stalder AG Sanitär Spenglerei Heizung reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 11 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
4.9
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.911
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bernstrasse 3
3532 Zäziwil
Opening hours
Mon
07:00 - 17:15
Tue
07:00 - 17:15
Wed
07:00 - 17:15
Thu
07:00 - 17:15
Fri
07:00 - 17:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-422.236.607
Founded
2014 · 12 years
Last commercial register change
January 14, 2014
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.100.06%
  • 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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