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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSchlierenHauser & Schwerzmann Haustechnik AG
Hauser & Schwerzmann Haustechnik AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Hauser & Schwerzmann Haustechnik AG is the planning, installation, maintenance and repair of heating, ventilation and air conditioning systems. The company also offers emergency services and advises customers on the selection and replacement of heating systems.

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Products & services

Industry:Plumbing & Building ServicesSpecialized Construction Installations
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Hauser & Schwerzmann Haustechnik AG

✓ Offered6
Heating
Heating systems for single-family homes, multi-family houses, residential developments, commercial and industrial buildings; consulting, planning, installation, commissioning, dismantling and replacement of heating systems with renewable energy sources.
Heating Service & Repairs
Service, repair and maintenance work on heating systems; plant inspection, functional testing, system check, troubleshooting, re-regulation, leak-tightness testing as well as maintenance and partial renewals.
Heating Emergency On-Call
24/7 fault phone service for heating systems installed by the company; emergency assistance outside office hours for its own installations.
Ventilation
Engineering, execution and consulting for ventilation systems; central and decentral systems, comfort ventilation, single-room systems, exhaust for restaurants and kitchens, and commercial and industrial ventilation.
Air Conditioning and Refrigeration
Planning, installation and service of air conditioning and refrigeration systems; office air conditioning, server cooling and energy-efficient overall solutions.
Maintenance
Maintenance and upkeep work for heating, ventilation and air conditioning systems; troubleshooting, fault rectification, cleaning, inspection of the installation, system check and periodic service contracts.
Trust & reputation

ranQ Trust Score of Hauser & Schwerzmann Haustechnik AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Hauser & Schwerzmann Haustechnik AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Hauser & Schwerzmann Haustechnik AG scores 83.4 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.79.212%
  • 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%
Hauser & Schwerzmann Haustechnik AG scores 83.3 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).83.322%
Hauser & Schwerzmann Haustechnik AG scores 48.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.48.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Hauser & Schwerzmann Haustechnik AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

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Location

Grabenstrasse 1
8952 Schlieren

At a glance

Legal form
Corporation
UID
CHE-383.254.054
Founded
2018 · 8 years
Last commercial register change
October 6, 2025
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.100.06%
  • 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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