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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesAltstätten SgStieger Ofenbau AG
Stieger Ofenbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Stieger Ofenbau AG designs, manufactures and installs stoves, fireplaces and stove systems for whole-house heating. The company also provides tile and wall cladding installations, metalwork services, outdoor fire features, and planning with 3D visualizations, including delivery and assembly.

AI-generated
Offering

Products & services

Industry:Specialized Construction Activities
✓ Offered11
Stove construction
Individually planned stoves, modern or classic; planning, material selection and clean workmanship for warmth and ambience in the living space.
Fireplace construction
Custom fireplaces and fire pits; advice, 3D visualisation, planning and professional installation for living spaces with visible flames.
Tiling
Installation of floors, walls and wet areas made of ceramic, natural stone or mosaic; precise workmanship, including large-format ceramic.
Chimney system construction
Planning and realisation of chimney systems for safe flue-gas routing; technically well thought-out, weather-resistant solutions tailored to the building.
Custom steel metalworking
Custom-made steel metalwork; traditional cookstoves, stove accessories, black-steel cladding, heating doors, soot doors and flue pipes.
Whole-house heating
Individual heating systems for entire residential buildings; planning and implementation of energy-efficient, comfortable and aesthetically integrated stove systems.
Speckstone stoves
Individually designed and built soapstone stoves with natural heat storage, long-lasting radiant heat and durable workmanship.
Fireplace stoves
Selection of brand fireplace stoves including advice, delivery and professional installation for fast, efficient heat.
Wall cladding
Wall cladding made of natural stone, facing stones or special materials for indoor and outdoor areas; implemented in both functional and design-focused ways.
Outdoor fire pits
Custom fire pits for garden, terrace and barbecue area; made from steel, concrete, natural stone or corten steel, designed and built to measure.
Planning & 3D visualisation
Individual planning with realistic 3D visualisation for stoves, fireplaces and similar projects; more planning certainty before construction begins.
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4.2/5

Stieger Ofenbau AG

Trust & reputation

ranQ Trust Score of Stieger Ofenbau AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Stieger Ofenbau AG scores 73.6 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.76.124%
  • 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.55.910%
  • 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.88.08%
Stieger Ofenbau AG scores 85.5 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%
Stieger Ofenbau 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%
Stieger Ofenbau 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

Stieger Ofenbau AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 8 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
4.8
of 5

Aggregated from 8 reviews across all connected sources

Sources
GGoogle4.88
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Erlenweg 9
9450 Altstätten Sg
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.268.385
Founded
1993 · 33 years
Last commercial register change
August 12, 2019
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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