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

About the company

Schäfli & Dieterich AG provides building services engineering, offering design, installation and maintenance of sanitary, heating and energy systems. Offerings include bathroom and heating installations, energy assessments (GEAK), solar/PV systems and a seven-day emergency service.

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Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.3/5

Schäfli & Dieterich AG

5
Sanitary installations
Sustainable sanitary installation for new builds and conversions, consulting, CAD planning, quotations and installation, service department for maintenance work, bathroom renovations, assistance with water damage, emergency service.
Heating installations
Sustainable heating installation for new builds and conversions, consulting, CAD planning, quotations and installation, heating renovations, funding applications, condition analyses, optimisations, emergency service.
Energy consulting and energy systems
GEAK® energy consulting, private checks, condition analyses, optimisations, sustainable energy systems for new builds and conversions, photovoltaic systems, building automation, thermal solar systems, hybrid systems, hydrogen home systems.
Service and on-call duty
Comprehensive service for building technology, maintenance work, optimisations, telephone and WhatsApp contact, 5-day service and 7-day emergency service outside opening hours.
Bathroom and bathroom remodelling planning
Bathroom configurator and bathroom and heating planner for initial details and ideas, guidance in selecting technical solutions, technical feasibility, support with the budget, and assistance with the showroom.
Trust & reputation

ranQ Trust Score of Schäfli & Dieterich AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Schäfli & Dieterich AG scores 80.3 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.72.524%
  • 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.87.310%
  • 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.95.08%
Schäfli & Dieterich AG scores 79.8 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.86.512%
  • 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%
Schäfli & Dieterich 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%
Schäfli & Dieterich AG scores 51.4 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 35.51.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schäfli & Dieterich AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 30 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
4.5
of 5

Aggregated from 30 reviews across all connected sources

Sources
GGoogle4.530
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Zürcherstrasse 254
8500 Frauenfeld
Opening hours
Mon
07:00 - 12:00, 13:15 - 17:00
Tue
07:00 - 12:00, 13:15 - 17:00
Wed
07:00 - 12:00, 13:15 - 17:00
Thu
07:00 - 12:00, 13:15 - 17:00
Fri
07:00 - 12:00, 13:15 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-406.541.035
Founded
2016 · 10 years
Last commercial register change
September 11, 2024
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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