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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesFlooring & TilingBellikonDual GmbH
Dual GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Dual GmbH is the planning, construction and installation of complete wood-fired systems, including chimneys, as well as the delivery and assembly of various wood heating systems from different manufacturers. Additionally, the company offers tile laying services with ceramic, mosaic and natural stone coverings.

AI-generated
Offering

Products & services

Industry:Flooring & Tiling
✓ Offered8
Tile coverings
Ceramic tiles, exterior tile coverings, natural stone coverings, mosaic coverings, as well as conversions and renovations.
Tile stoves
Tile stoves made to measure, hand-crafted according to customer preferences, in classic or modern designs, with tiled or plastered finishes.
Soapstone stoves
Soapstone stoves in standard models or as custom special-made units to measure, with large viewing windows and long heat storage.
Fireplaces
Fireplaces according to your wishes with individual design and fittings, including sketches and planning before construction.
Fireplace stoves
Fireplace stoves for fast heat and a cosy atmosphere, available in various colours, shapes and equipment options.
Pellet stoves
Pellet stoves with automatic heat output, combining wood-fire ambience and models from leading manufacturers.
Cooking and baking ranges
Cooking and baking ranges for cooking and baking with wood, including a wood-fired cooking range, a central-heating range and a combination range with wood and electric heating.
Fireplace glazing
Custom-made fireplace glazing for renovating old fireplaces or open hearths, with spark protection and higher heat output.
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3.9/5

Dual GmbH

Trust & reputation

ranQ Trust Score of Dual GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Dual GmbH 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.60.024%
  • 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.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.70.08%
Dual GmbH scores 83.0 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.100.012%
  • 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%
Dual GmbH 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%
Dual GmbH scores 6.3 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 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Dual GmbH reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 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
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle45
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Mutschellenstrasse 22
5454 Bellikon

At a glance

Legal form
Limited Liability Company
UID
CHE-108.413.808
Founded
1996 · 30 years
Last commercial register change
October 23, 2009
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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