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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMellingenETHEMI HAUSTECHNIK GmbH
ETHEMI HAUSTECHNIK GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Ethemi Haustechnik GmbH is the provision of services in the field of building technology, particularly in the areas of sanitation, heating and ventilation. This includes planning, installation, repair and maintenance of building technology systems, as well as bathroom renovations and emergency services.

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Offering

Products & services

Industry:Plumbing & Building ServicesSpecialized Construction Installations
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4.6/5

ETHEMI HAUSTECHNIK GmbH

✓ Offered6
Plumbing work
Installation, repair and replacement of sanitary installations; new installations for new builds and renovations of single- and multi-family homes as well as commercial properties, including service and maintenance.
Bathroom renovations
Bathroom renovations with an analysis of the bathroom situation, a new space concept, barrier-free solutions, and bespoke bathroom furniture and sanitary installations.
Heating work
Repair of faulty valves, maintenance and cleaning of heating systems as well as installation of efficient heating and ventilation systems, and on request integrated heating and ventilation concepts.
Ventilation work
Planning of individual ventilation concepts, professional installation of efficient ventilation systems and regular maintenance to improve air quality and heat recovery.
Building services planning
Thoughtful planning and professional implementation of building services systems, clarifying the requirements, taking individual wishes into account and delivering a coordinated concept.
Emergency service
24-hour emergency service for water damage with immediate repair, monitoring of the drying process and documentation for insurers.
Trust & reputation

ranQ Trust Score of ETHEMI HAUSTECHNIK GmbH: 4.6 out of 5.0

Trust Score4.6/ 5.0

Excellent

x

Data basis 96% · As of October 2026

ETHEMI HAUSTECHNIK GmbH scores 95.2 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.93.324%
  • 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.100.010%
  • 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.95.08%
ETHEMI HAUSTECHNIK GmbH scores 87.7 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.95.212%
  • 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%
ETHEMI HAUSTECHNIK 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%
ETHEMI HAUSTECHNIK GmbH scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ETHEMI HAUSTECHNIK GmbH reaches a ranQ Trust Score of 4.6 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.9 out of 5 stars from 169 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
4.9
of 5

Aggregated from 169 reviews across all connected sources

Sources
GGoogle4.9169
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Lenzburgerstrasse 16
5507 Mellingen
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-479.478.935
Founded
2013 · 13 years
Last commercial register change
March 9, 2018
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.
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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