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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingGamsDürr Haustechnik AG
Dürr Haustechnik AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Dürr Haustechnik AG is the provision of services in the field of building technology, particularly in the following areas: sheet metal work, lightning protection, flat roofs, sanitary facilities, service, heating, and solar systems. The company thus offers a wide range of services focused on the installation, maintenance, and repair of building technology systems and installations.

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Offering

Products & services

Industry:RoofingSolar & Photovoltaics
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Dürr Haustechnik AG

✓ Offered7
Heating
Consulting, planning, installation, service and repairs of heating systems and heat pumps; plus district heating, oil heating systems, gas heating systems, pellet boilers and solar systems.
Plumbing
Plumbing installations for new builds and renovations, bathroom refurbishments, new installations, pipe rehabilitation, water softening systems, repairs and water supply.
Sheet metal works
Sheet metal works and metalworking for roofs, facades, chimneys, dormers and window sills; including gutters, sheet metal roofing, facade cladding and roof maintenance.
Solar
Solar systems and photovoltaics for roofs and facades; use of solar energy for heat or electricity, also integrable into existing heating systems.
Flat roof
Flat roof waterproofing with rubber and prefabricated sealing systems for roofs of all types; designed for long service life and weather-resistant protection.
Lightning protection
Lightning protection systems for buildings with capture, down conductor, earthing and potential equalisation systems to reduce damage to people and buildings.
Service
Service, consulting, repairs and maintenance for heating systems, heat pumps and plumbing installations; service requests are handled via a form.
Trust & reputation

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

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Dürr Haustechnik AG scores 71.7 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.76.124%
  • 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.55.910%
  • 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.78.08%
Dürr Haustechnik AG scores 85.5 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.55.07%
Dürr 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%
Dürr Haustechnik AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dürr Haustechnik AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 8 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
4.8
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.88
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Haagerstrasse 61
9473 Gams
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:15
Tue
07:30 - 12:00, 13:15 - 17:15
Wed
07:30 - 12:00, 13:15 - 17:15
Thu
07:30 - 12:00, 13:15 - 17:15
Fri
07:30 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.801.131
Founded
1971 · 55 years
Last commercial register change
September 10, 2015
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.
100.0
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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