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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkHorriwilSchreier AG
Schreier AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Schreier AG includes the planning, implementation, repair and maintenance of sanitary, heating and plumbing work, including: bathroom renovations, sanitary work (e.g. descaling of boilers, installation of water softening systems), heating work (e.g. heating system renovation), plumbing work (e.g. installation of skylights, lightning protection systems), pipeline construction and water damage repair, and work with liquid plastic and core drilling. The company thus offers comprehensive services in the field of water and heat for private households.

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Offering

Products & services

Industry:Sheet Metal Work
✓ Offered8
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4.3/5

Schreier AG

Sanitary installations
Installation, maintenance and repair of sanitary systems; descaling boilers, installing water softening systems, building pipework and carrying out bathroom and kitchen conversions.
Sheet metal work
Sheet metal work and waterproofing on roof and facade; gutters, downpipes, cladding, maintenance and renovation of flat roofs, roof inspections, lightning protection and smaller core drilling.
Heating systems
Heating renovations, planning and implementation of oil, gas, heat pump, wood pellet and solar systems; heating repairs, maintenance and service work.
Bathroom renovations
Planning and implementation of bathroom renovations; modernization of wet rooms, barrier-free showers, shower toilets, replacement of bathtubs and complete bathroom concepts.
Photovoltaics
Plan, size and implement photovoltaic systems; initial consultation, suitability check, quotation, building permit application, funding contributions, commissioning and monitoring.
Roof windows
Installation, replacement, maintenance and retrofitting of VELUX roof windows; automation, accessories, exterior roller shutters, markises and interior blinds.
Liquid plastic
Waterproofing and coatings with liquid plastic for terraces, balconies, entrance canopies and flat roofs; slip-resistant surfaces and detailed waterproofing.
Water damage
Damage analysis in case of penetrating moisture, immediate measures, remediation options, coordination with professionals and documentation for the insurance.
Trust & reputation

ranQ Trust Score of Schreier AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Schreier AG scores 79.8 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.77.024%
  • 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.70.510%
  • 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%
Schreier AG scores 85.5 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%
Schreier 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%
Schreier 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

Schreier AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 15 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
4.7
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.715
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Gewerbestrasse 2
4557 Horriwil
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
Corporation
UID
CHE-107.935.613
Founded
1979 · 47 years
Last commercial register change
November 11, 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.
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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