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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesGrünenSchaffer AG
Schaffer AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Schaffer AG is an installation company for heating, sanitary, solar thermal and comfort ventilation systems. Services include building services planning, system installation, maintenance and repairs, as well as water-supply pipelines and construction coordination.

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Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered8
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3.8/5

Schaffer AG

Heating
Heating systems for new builds and conversions, heat pumps, wood-fired heating, district heating, oil heating, gas heating, heating distribution and heating-water treatment.
Sanitary
Sanitary installations for new builds and conversions, bathroom and kitchen renovations, garden irrigation, water softening, germ removal and pressure boosting systems.
Thermal solar systems
Flat-plate collectors for heating support or domestic hot water, vacuum tube collectors as well as swimming-pool collectors with flat-plate collectors or absorber mats.
Comfort ventilation
Comfort ventilation systems in project and execution planning for sanitary, heating and ventilation areas.
Utility lines / Water supply
Utility lines and water supply as an independent service area in the company's offer menu.
Repairs
Boiler descaling as well as heating and sanitary repairs, excluding oil burner service.
Building services planning
Tender submissions, project planning and execution planning in the fields of sanitary, heating and comfort ventilation.
Construction coordination
Construction coordination as an offer category in the company's main menu.
Trust & reputation

ranQ Trust Score of Schaffer AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Schaffer AG scores 58.5 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.66.724%
  • 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.45.610%
  • 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.50.08%
Schaffer AG scores 70.4 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.64.612%
  • 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%
Schaffer 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%
Schaffer AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schaffer AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 5 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
4.4
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.45
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Mühlehofweg 1
3455 Grünen
Opening hours
Mon
07:15 - 17:00
Tue
07:15 - 17:00
Wed
07:15 - 17:00
Thu
07:15 - 17:00
Fri
07:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-157.385.809
Founded
2021 · 5 years
Last commercial register change
May 14, 2021
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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