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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesWeinfeldenPrandini AG
Prandini AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Prandini AG is a building-services specialist offering planning, installation and maintenance of heating, ventilation and sanitary systems. The company also provides service, maintenance and repair work for these installations.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered4
Heating installations
Heating installations for new builds and conversions, revisions and maintenance mandates; consulting, planning and installation, extensions and adaptations of existing systems, heat pumps, solar thermal, photovoltaics, wood-fired heating and pipefitting work.
Ventilation installations
Ventilation installations for new builds and conversions, revisions and maintenance mandates; consulting, planning and installation of ventilation systems, as well as cleaning and maintenance of ventilation systems.
Plumbing installations
Plumbing installations for bathroom conversions and new builds; consulting and planning, energy optimisation, water treatment, prefabrications, water softening systems, shower toilets and sanitary service.
Maintenance and customer service
Maintenance and customer service for heating, plumbing and ventilation; repairs, revisions, cleaning, descaling of boilers, replacement of ventilation filters and core drilling or concrete drilling.
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4.3/5

Prandini AG

Trust & reputation

ranQ Trust Score of Prandini AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Prandini AG scores 77.9 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.65.024%
  • 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.91.110%
  • 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.100.08%
Prandini AG scores 84.8 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.89.612%
  • 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.70.07%
Prandini 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%
Prandini AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Prandini AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.3 out of 5 stars from 35 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
4.3
of 5

Aggregated from 35 reviews across all connected sources

Sources
GGoogle4.335
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Weststrasse 14
8570 Weinfelden
Opening hours
Mon
07:00 - 11:45, 13:00 - 17:00
Tue
07:00 - 11:45, 13:00 - 17:00
Wed
07:00 - 11:45, 13:00 - 17:00
Thu
07:00 - 11:45, 13:00 - 17:00
Fri
07:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-262.785.090
Founded
2015 · 11 years
Last commercial register change
September 23, 2026
Employees
11 to 20
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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