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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesHerrlibergThomas Hänzi Heizungen + Reparaturen GmbH
Thomas Hänzi Heizungen + Reparaturen GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Thomas Hänzi Heizungen+Reparaturen GmbH is the planning, installation, maintenance and repair of heating systems across all energy sectors, including oil, gas, heat pumps, solar, wood and district heating. This also includes the installation of radiators, the laying of underfloor heating systems, boiler installations and decalcifications, as well as the performance of service and maintenance work on all makes and in all energy sectors.

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Products & services

Industry:Plumbing & Building Services
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4.1/5

Thomas Hänzi Heizungen + Reparaturen GmbH

✓ Offered7
Heating system refurbishment
Heating system refurbishments for conversions and new builds, with on-site consultation, condition assessment, planning and implementation for oil, gas, heat pump, solar and wood systems.
Consulting, planning and installation of heating systems
Consulting, planning and installation of heating systems, tailored to the existing situation, with technical coordination for projects in all energy fields.
Service and repairs
Service and maintenance work as well as repairs to heating systems of all makes and energy types, including replacement of faulty circulation pumps and boiler replacement.
Heating installations and deinstallations
Heating installations and deinstallations, including new installations, boiler refurbishments, district heating substations and heat pumps.
Underfloor heating systems
Laying, flushing and cleaning underfloor heating systems, as well as installation of underfloor heating as part of refurbishments and new installations.
Boiler installations and descaling
Boiler installations, boiler replacement and descaling as part of heating and domestic hot water engineering.
Alternative and solar technology
Heating systems with heat pumps, solar installations, pellet systems and wood-fired piecewood systems, partly in collaboration with suppliers.
Trust & reputation

ranQ Trust Score of Thomas Hänzi Heizungen + Reparaturen GmbH: 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.

Thomas Hänzi Heizungen + Reparaturen GmbH 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%
Thomas Hänzi Heizungen + Reparaturen GmbH scores 83.0 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.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%
Thomas Hänzi Heizungen + Reparaturen GmbH 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%
Thomas Hänzi Heizungen + Reparaturen GmbH scores 5.4 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 35.5.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Thomas Hänzi Heizungen + Reparaturen GmbH 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

Schulhausstrasse 12
8704 Herrliberg

At a glance

Legal form
Limited Liability Company
UID
CHE-114.899.939
Founded
2009 · 17 years
Last commercial register change
November 27, 2019
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.88.06%
  • 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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