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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberSt. GallenWirth Gebäudetechnik AG
Wirth Gebäudetechnik AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Wirth Gebäudetechnik AG carries out plumbing and heating installations in residential and industrial buildings, for both new construction and renovation projects. Its services include bathroom and heating-system renovations and maintenance for heating systems.

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Service area

Offering

Products & services

Industry:Plumber
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Wirth Gebäudetechnik AG

Bathroom renovation
Bathroom renovations, conversions and new-build projects; complete sanitary works, digital bathroom planner, consultation appointment, references and inspiration on styles and brands.
Heating system renovation
Heating system renovations, new heating systems and heating installation; advice, heating calculator, impulse consulting, funding information and support for gas, oil, heat pump, pellet, district heating, hybrid, electric and infrared heating systems.
Service packages
Individual service packages for heating and sanitary systems; maintenance, pressure checks, visual inspections, checks of expansion vessels, WC systems, pump chamber and BMS fresh-water stations.
24h emergency standby service
24h emergency standby service for faults and emergencies in heating or sanitary systems; telephone accessibility for urgent interventions.
Renovation management
Renovation management for refurbishment and conversion projects; coordinated support around the execution of bathroom and heating work.
Energy concept
Free analysis according to GEAK for buildings; assessment of heating, domestic hot water, building envelope, windows and insulation as a decision basis for renovations.
Trust & reputation

ranQ Trust Score of Wirth Gebäudetechnik AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of November 2026

Wirth Gebäudetechnik AG scores 78.5 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.85.424%
  • 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.68.910%
  • 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.70.08%
Wirth Gebäudetechnik 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%
Wirth Gebäudetechnik AG scores 88.3 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).88.322%
Wirth Gebäudetechnik AG scores 16.5 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 35.22.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Wirth Gebäudetechnik AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 14 customer reviews. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle514
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

January 15, 2023Media
Keine Viertagewoche in der Firma Wirth in St.Gallen
tagblatt.ch

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Location

Buchentalstrasse 27
9000 St. Gallen
Opening hours
Mon
07:00 - 11:45, 13:15 - 17:00
Tue
07:00 - 11:45, 13:15 - 17:00
Wed
07:00 - 11:45, 13:15 - 17:00
Thu
07:00 - 11:45, 13:15 - 17:00
Fri
07:00 - 11:45, 13:15 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.637.733
Founded
1997 · 29 years
Last commercial register change
October 6, 2023
Employees
21 to 50

Active in 1 of 26 cantons

  • SGSt. Gallen
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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