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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesWettingenWürmli Haustechnik AG
Würmli Haustechnik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Würmli Haustechnik AG provides planning, installation, renovation and maintenance services for bathrooms, heating and sanitary systems, and offers solutions related to renewable energy and service work.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Bathroom renovation and remodeling
Planning, coordination and execution of new builds, renovations and conversions of bathrooms; including photorealistic 3D planning, advice and handover of the finished bathroom.
Heating renovation and heating systems
Analysis, design, implementation and commissioning of heating systems; with advice on heat pumps, wood heating, district heating as well as oil and gas heating.
Sanitary engineering
Planning, installation and renovation of cold and hot water pipes, water heaters, wastewater pipes, sanitary fixtures, water softening systems and water filters.
Renewable energy for heating and electricity
Consulting, planning and installation of heat pumps, solar thermal, photovoltaic systems and wood heating for heat and electricity generation.
Sanitary and heating service
Repairs, maintenance and service contracts for sanitary and heating systems; including boiler descaling, filter cleaning and long-term support.
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4.5/5

Würmli Haustechnik AG

Trust & reputation

ranQ Trust Score of Würmli Haustechnik AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

Würmli Haustechnik AG scores 84.2 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.77.324%
  • 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.97.910%
  • 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%
Würmli Haustechnik AG scores 92.3 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.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%
Würmli Haustechnik AG 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%
Würmli Haustechnik AG scores 62.9 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 35.62.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Würmli Haustechnik AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.6 out of 5 stars from 46 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 46 reviews across all connected sources

Sources
GGoogle4.646
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Zentralstrasse 74
5430 Wettingen
Opening hours
Mon
07:00 - 12:00, 13:00 - 18:00
Tue
07:00 - 12:00, 13:00 - 18:00
Wed
07:00 - 12:00, 13:00 - 18:00
Thu
07:00 - 12:00, 13:00 - 18:00
Fri
07:00 - 12:00, 13:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.995.526
Founded
2006 · 20 years
Last commercial register change
September 1, 2026
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.
100.0
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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