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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding companyFrauenfeldOswald Haller AG
Oswald Haller AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Oswald Haller AG provides building-envelope services including consultation, planning and execution of roofing, façades and sheet-metal work. Offerings also include photovoltaic systems and battery storage, VELUX roof-window installation, energy-related renovations, maintenance and support with energy advice and funding applications.

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Service area

Offering

Products & services

Industry:Holding company
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Oswald Haller AG

Consulting and planning
Consulting and planning for architects, clients and real estate administrations covering roofs, façades and building envelopes.
Energy-efficient renovations
Energy-efficient renovations for pitched and flat roof areas as well as for new builds.
Photovoltaics and battery storage
Photovoltaic and battery storage solutions for buildings, including custom solar power solutions.
VELUX roof windows
Installation and replacement of VELUX roof windows as an official expert.
Sheet metal and façade works
Sheet metal and façade works for functional and aesthetic building envelopes.
Maintenance and servicing
Maintenance and servicing for sustainable care of the building envelope.
Energy consulting and subsidy applications
Energy consulting and support with subsidy applications from idea to implementation.
Trust & reputation

ranQ Trust Score of Oswald Haller AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of November 2026

Oswald Haller AG scores 71.5 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.67.824%
  • 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.88.08%
Oswald Haller 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%
Oswald Haller AG scores 86.7 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).86.722%
Oswald Haller AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Oswald Haller AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.413
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Mühletobelstrasse 29
8500 Frauenfeld
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-102.700.830
Founded
1967 · 59 years
Last commercial register change
March 8, 2011
Employees
21 to 50

Active in 1 of 26 cantons · 1 municipality

  • TGFrauenfeld
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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