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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkKoppigenD. Baumberger AG
D. Baumberger AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity is the provision of services in the field of building technology, particularly in the areas of plumbing, heating, sheet metal work, solar energy, ventilation systems and water supply. The company offers renovation and new construction services, maintenance and repair services, as well as specialized services such as boiler descaling, rainwater harvesting and 3D bathroom planning.

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Offering

Products & services

Industry:Sheet Metal Work
✓ Offered8
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4.4/5

D. Baumberger AG

Sanitary installations for renovation and new build
Bathroom and sanitary installations for renovation and new build, detailed 3D plans, cost estimates, schedule planning and coordination of tradespeople.
Service / Repairs
Connecting and disconnecting appliances, replacing units and fittings, устранение blockages and dripping points, leak detection and assistance with water damage.
Water supply
Service lines for water supply networks, pipework installation, house connections, hydrants as well as service and repairs, including Brunnenmeister activity for Koppigen and Niederösch.
Heating
Boiler replacements, underfloor heating systems and radiator heating, additions to existing heating installations, new builds and renovations, as well as systems using oil, gas, heat pumps, pellets and district heating.
Sheet metal work
General building sheet metal work, artistic sheet metal work, lightning protection, repairs to metal sheet items and general maintenance work on the roof and chimney.
Solar energy
Design and installation of solar systems for preheating, domestic hot water, heating support and swimming pool water heating, as well as integration into existing heating systems.
Apartment ventilation
Controlled apartment ventilation with planning and technology to improve indoor air quality, moisture removal, energy consumption and living comfort.
Rainwater harvesting
Rainwater harvesting systems for flush cisterns, garden and garage taps, washing machines and irrigation systems, especially for new builds and renovations.
Trust & reputation

ranQ Trust Score of D. Baumberger AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 100% · As of October 2026

D. Baumberger AG scores 93.9 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.93.124%
  • 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.95.110%
  • 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.95.08%
D. Baumberger AG scores 82.0 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.83.012%
  • 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.70.07%
D. Baumberger AG scores 86.7 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).86.722%
D. Baumberger AG 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 35.17.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

D. Baumberger AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 41 customer reviews. 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 41 reviews across all connected sources

Sources
GGoogle541
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

November 1, 2022Media
D. Baumberger AG – ein Familienbetrieb in sechster Generation
dregion.ch

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Location

Aspiring 6
3425 Koppigen
Opening hours
Mon
07:30 - 11:45, 13:00 - 17:15
Tue
07:30 - 11:45, 13:00 - 17:15
Wed
07:30 - 11:45, 13:00 - 17:15
Thu
07:30 - 11:45, 13:00 - 17:15
Fri
07:30 - 11:45, 13:00 - 17:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-163.505.789
Founded
2017 · 9 years
Last commercial register change
April 5, 2017
Employees
11 to 20
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.70.03%
    • Full methodology

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