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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsUntersiggenthalDario Widmer Heizung - Sanitär
Dario Widmer Heizung - Sanitär Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity is the installation, maintenance and repair of sanitary and heating systems, including: Sanitary installations (new and renovation work, bathroom renovations, cellar distribution systems), Heating systems (new installations, maintenance, repair, boiler renovations, radiator replacement and bleeding), Boiler descaling and installation, Heat pumps and alternative heating systems (wood chips, pellets), Thermal solar systems for hot water preparation, Service work (replacing water taps, general maintenance work). The company thus offers comprehensive services in the field of building technology.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered6
Sanitary installations
Sanitary installations for new builds and conversions, bathroom renovations, cellar distribution systems, service work such as tap replacement, and general maintenance.
Heating installations
New heating installations, alternative systems such as wood chip and pellet heating, oil and gas heating, heat pumps, boiler refurbishments, and underfloor heating.
Boiler descaling
Boiler descaling and new boiler installations, including environmentally friendly heat pump boilers.
Solar thermal systems
Solar thermal systems for domestic hot water preparation within the sanitary service offering.
Water softening systems
Water softening systems for water treatment as part of the sanitary services.
Heating maintenance
Heating installation and maintenance, including radiator replacement and bleeding, flushing and filling heating systems, and replacing circulation pumps.
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4.0/5

Dario Widmer Heizung - Sanitär

Trust & reputation

ranQ Trust Score of Dario Widmer Heizung - Sanitär: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 100% · As of October 2026

Dario Widmer Heizung - Sanitär scores 72.8 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.79.424%
  • 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.52.910%
  • 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.78.08%
Dario Widmer Heizung - Sanitär scores 76.4 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.95.212%
  • 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%
Dario Widmer Heizung - Sanitär 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%
Dario Widmer Heizung - Sanitär scores 7.7 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 35.5.44%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Dario Widmer Heizung - Sanitär reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 7 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

March 1, 2024Media
Nach 39 Jahren löst Frank "Schödi" Schoder nun keine sanitären Sorgen mehr
aargauerzeitung.ch

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Location

Dorfstrasse 68a
5417 Untersiggenthal
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
Sole proprietorship
UID
CHE-297.662.140
Founded
2013 · 13 years
Last commercial register change
November 9, 2023
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.
67.0
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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