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

About the company

The core activity of Wittwer Haustechnik AG is the planning, installation and modernization of sanitary facilities, including bathroom solutions, water supply systems and rainwater harvesting systems, with a focus on quality, sustainability and individual solutions for private households.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered6
Sanitary and heating installations
Sanitary, heating and ventilation installations for new builds and renovations, including water installations, bathroom solutions, heating systems and ventilation technology.
Planning and consulting
Tailored planning and consulting for building services projects, from idea to implementation, using sustainable and efficient systems.
Heating and ventilation technology
Installation and repair of heating systems and room ventilation, including district heating, heat pump and comfort ventilation systems.
Sanitary work
Planning, new installations and repairs of sanitary systems, with functional and modern solutions for everyday water use.
Solar and photovoltaic systems
Planning, installation and maintenance of solar solutions, in particular photovoltaic and solar thermal systems for energy-efficient buildings.
24/7 on-call service
24-hour emergency service for faults and urgent interventions in the fields of sanitary, heating and ventilation.
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4.2/5

Wittwer Haustechnik AG

Trust & reputation

ranQ Trust Score of Wittwer Haustechnik AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Wittwer Haustechnik AG scores 68.0 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.59.324%
  • 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.67.110%
  • 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%
Wittwer Haustechnik AG scores 90.9 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.70.07%
Wittwer 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%
Wittwer Haustechnik AG scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wittwer Haustechnik AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.1 out of 5 stars from 13 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
4.1
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.113
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Allmendstrasse 50
5300 Turgi
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.055.684
Founded
1998 · 28 years
Last commercial register change
November 18, 2025
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.85.03%
    • Full methodology

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