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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesUettligensanheiz service GmbH
sanheiz service GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

sanheiz service GmbH provides planning, consultation, installation and maintenance services for sanitary and heating systems. Offerings include water softening and descaling systems, boiler servicing, and installation and servicing of heat pumps, solar systems, and oil/gas and wood heating systems.

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Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.0/5

sanheiz service GmbH

8
Sanitary installations
Planning, consulting and execution of sanitary installations in new builds and conversions, conversion concepts, bathroom renovations as well as cold, hot and wastewater pipework.
Heating installations
Planning and execution of heating work in the sanitary and heating sector, including heating systems for new builds and conversions as well as renovations.
Heat pumps
Information, planning and implementation of heat pumps as a heating system using ambient heat from water, ground or air.
Solar energy
Planning and use of solar thermal and photovoltaic for domestic hot water and electricity, including solar collectors and solar installations.
Water softening
Advice and installation of water softeners to reduce limescale, improve water quality and lower cleaning and energy consumption.
Boiler descaling
Descaling of boilers, control of boiler temperature, replacement of heating elements and inspection of hot water heaters.
Descaling systems
Installation of water softening and descaling systems with ion-exchange process to reduce limescale in drinking water.
Wood heating
Planning and use of wood pellet heating systems as a central heating system for space heating and domestic hot water, including heating system adjustments.
Trust & reputation

ranQ Trust Score of sanheiz service GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

sanheiz service GmbH scores 63.5 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.60.724%
  • 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.40.910%
  • 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.100.08%
sanheiz service GmbH scores 83.0 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%
sanheiz service 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%
sanheiz service GmbH scores 3.4 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 35.3.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

sanheiz service GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 4 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
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle44
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Wohlenstrasse 40
3043 Uettligen

At a glance

Legal form
Limited Liability Company
UID
CHE-112.844.270
Founded
2006 · 20 years
Last commercial register change
May 31, 2010
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.
88.0
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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