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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesHägendorfA1 Gebäudetechnik GmbH
A1 Gebäudetechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of A1 Gebäudetechnik GmbH is the planning, delivery and installation of heating, ventilation, sanitary and air conditioning systems for new buildings and renovations of existing buildings. The company offers consulting, planning and execution of sanitary systems as well as heating, ventilation and air conditioning systems, and supports private builders, commercial construction companies, installers, planners and architects in their projects.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered4
Sanitary installations
Sanitary installations for new builds, renovations, modernisations and extensions; advice, planning, delivery and professional installation of sanitary systems.
Heating systems
Heating systems for new builds, renovations, modernisations and extensions; planning, delivery and installation of customised heating systems.
Ventilation systems
Ventilation systems for new builds, renovations, modernisations and extensions; planning, delivery and installation of room ventilation and ventilation systems.
Air-conditioning technology
Air-conditioning technology for large facilities and apartments; planning, delivery and installation of refrigeration and air-conditioning systems for year-round comfort.
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4.0/5

A1 Gebäudetechnik GmbH

Trust & reputation

ranQ Trust Score of A1 Gebäudetechnik GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

A1 Gebäudetechnik GmbH scores 57.6 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.67.124%
  • 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.52.910%
  • 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.35.08%
A1 Gebäudetechnik GmbH scores 86.7 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%
A1 Gebäudetechnik GmbH scores 85.0 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).85.022%
A1 Gebäudetechnik GmbH scores 6.9 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 35.6.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A1 Gebäudetechnik GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 7 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
4.4
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.47
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Batterieweg 6
4614 Hägendorf
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-112.895.468
Founded
2006 · 20 years
Last commercial register change
April 28, 2021
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.
88.0
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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