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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceAdliswilStark Haustechnik GmbH
Stark Haustechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activities of Stark Haustechnik GmbH encompass the following areas: Sanitation: installation, renovation and servicing of sanitary facilities; Heating: installation, renovation and servicing of heating systems, including gas and oil heating systems as well as heat pumps; Ventilation: installation, renovation and servicing of ventilation systems, including new and renovation projects; Energy consulting (MuKEn): professional consulting and planning in the field of energy efficiency and optimization; Renovation and servicing: execution of renovation and refurbishment work as well as servicing of existing facilities; Emergency service: 24/7 service for emergencies and malfunctions in the above-mentioned areas.

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Products & services

Industry:Building Maintenance
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4.1/5

Stark Haustechnik GmbH

Plumbing & Building Services
✓ Offered6
Sanitary installation
Plumbing work from planning to service for new builds and conversions, renovation of existing systems, bathroom fit-outs, kitchen conversions, water and wastewater installations, gas installations, repairs and maintenance.
Heating
Heating systems and domestic hot water systems, installation and renovation of gas and oil heating systems up to heat pumps, underfloor heating, radiators, geothermal energy, burner service, repairs and maintenance.
Ventilation
Ventilation systems for new builds and conversions as well as renovations, controlled home ventilation, catering facilities, kitchen and bathroom exhaust ventilation.
Energy consulting (MuKEn)
Energy consulting for the home regarding new energy regulations, renovation solutions, grants, and energy costs; advice for heating systems concerned.
Renovations, new builds and service
Renovation, new-build and service work, water damage remediation, repairs for dripping taps, complete conversions and new builds, as well as individual solutions for partners and customers.
On-call service and repair assignment
On-call service around the clock in emergencies, as well as repair assignments for minor and major damage to sanitary and heating systems.
Trust & reputation

ranQ Trust Score of Stark Haustechnik GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Stark Haustechnik GmbH scores 79.0 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.81.124%
  • 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.74.910%
  • 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.78.08%
Stark Haustechnik GmbH scores 70.2 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.70.212%
  • 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.55.07%
Stark 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.
x
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%
Stark Haustechnik 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

Stark Haustechnik GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 out of 5 stars from 18 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
4.8
of 5

Aggregated from 18 reviews across all connected sources

Sources
GGoogle4.818
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Hier entsteht die Karte
Zürichstrasse 103
8134 Adliswil
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Limited Liability Company
UID
CHE-339.375.820
Founded
2020 · 6 years
Last commercial register change
May 14, 2025
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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