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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationSchlierenHaupt + Studer AG
Haupt + Studer AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Haupt + Studer AG is the provision of services in the field of building technology, particularly in the areas of electrical installation, building automation and smart home. The company offers solutions for demanding customer requirements and provides services such as planning, implementation and maintenance for building technology systems.

AI-generated
Offering

Products & services

Industry:Electrical Planning & Installation
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Haupt + Studer AG

✓ Offered
8
Electrical installations
High-current and low-current installations, lighting and power installations, network systems, UKV systems, fire alarm systems, emergency lighting and safety systems for residential buildings, industry, commercial premises and public buildings.
Building technology
Intelligent building technology for smart home and building automation with Loxone and KNX, visualizations, active networks and cloud connections for multi-family houses, industry and commercial premises.
Service & maintenance
Individual service, maintenance contracts and 24/7 on-call duty for electrical systems in industry, commercial premises and private residential buildings.
Telematics
Telecommunications with VoIP solutions, cloud and hosted telephony, conventional telephone systems, data networks and remote maintenance.
E-mobility
Installation of charging infrastructure for electric vehicles, including consultation and planning, approvals, electrical installation, load management, cloud connections, programming and maintenance.
Photovoltaics
Planning and installation of photovoltaic systems for solar power generation for basic supply, as well as to reduce energy costs and use outdoor areas.
Planning & advisory
Analysis and consultation, concept and strategy, cost estimates and quotation, tendering, detailed planning, specialist construction management, cost control and as-built documentation.
Testing & safety
Periodic, independent and final inspections, maintenance with thermography, energy consulting, expert reports, safety documentation, grid/network analyses and asbestos in the electrical sector.
Trust & reputation

ranQ Trust Score of Haupt + Studer AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Haupt + Studer AG scores 76.2 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.82.024%
  • 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.67.110%
  • 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.70.08%
Haupt + Studer AG scores 92.3 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.82.07%
Haupt + Studer AG 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%
Haupt + Studer AG scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Haupt + Studer AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 13 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 13 reviews across all connected sources

Sources
GGoogle4.913
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Wagistrasse 7
8952 Schlieren
Opening hours
Mon
07:30 - 12:00, 13:30 - 16:30
Tue
07:30 - 12:00, 13:30 - 16:30
Wed
07:30 - 12:00, 13:30 - 16:30
Thu
07:30 - 12:00, 13:30 - 16:30
Fri
07:30 - 12:00, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.968.688
Founded
1977 · 49 years
Last commercial register change
July 24, 2026
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.
100.0
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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