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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSchwanden GlWirth Heizungs-Service GmbH
Wirth Heizungs-Service GmbH Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Wirth Heizungs-Service GmbH is the installation, maintenance and repair of heating systems, particularly those using oil and gas, as well as related services such as consulting, planning and installation.

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Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.0/5

Wirth Heizungs-Service GmbH

5
Maintenance contracts
Maintenance contracts for oil and gas burners with annual inspection, emergency service for troubleshooting, adjustment, functional checks and advice on the system’s condition.
Individual inspections
Individual inspections of burners for oil and gas heating systems without a maintenance contract, in particular when the measured values of the official combustion inspection are no longer met.
Burner replacements
Burner replacements when the service life has been reached, spare parts are missing or repair costs are too high, including assessment and on-site quotation.
Fault rectification
Fault rectification on heating systems and burners of all types, specialized in oil and gas burners.
Telebutler - Heating via app/SMS
Remote control and monitoring of the heating via internet, mobile phone or smartphone with SMS notifications in case of temperature faults; suitable for all heating systems.
Trust & reputation

ranQ Trust Score of Wirth Heizungs-Service GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

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Data basis 100% · As of October 2026

Wirth Heizungs-Service GmbH scores 70.0 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.72.124%
  • 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.58.610%
  • 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.78.08%
Wirth Heizungs-Service GmbH scores 75.7 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.83.012%
  • 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%
Wirth Heizungs-Service GmbH scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).86.722%
Wirth Heizungs-Service GmbH scores 17.2 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.34.34%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Wirth Heizungs-Service GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.6 out of 5 stars from 9 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.69
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

January 28, 2018Media
Reto Wirth übernimmt die Heizungs-Servicestelle von René Legler
glarus24.ch

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Location

Güetlistrasse 22
8762 Schwanden Gl
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:30
Tue
07:00 - 12:00, 13:00 - 17:30
Wed
07:00 - 12:00, 13:00 - 17:30
Thu
07:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-381.507.770
Founded
2017 · 9 years
Last commercial register change
December 4, 2017
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.
88.0
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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