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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesWohlen AgStenz AG
Stenz AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Stenz AG is the planning, coordination and consulting of building technology projects, particularly in the areas of heating, ventilation and sanitation. The company offers services such as expert opinions, neutral consulting, energy certificates, Minergie applications and the planning of heating, ventilation and sanitation systems for private clients, architects and companies.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered8
Heating systems
Design, consult on and implement heating systems; heat pumps, pellet heating systems, wood-chip boilers, district heating, waste-heat recovery, gas heating systems and ice storage heating systems, as well as heating system modernisations.
Ventilation systems
Ventilation systems for residential buildings, workplaces and complex buildings; controlled mechanical residential ventilation (HRV) as well as design and implementation of ventilation systems.
Sanitary installations
Plan sanitary installations for drinking water, wastewater systems and rainwater; applications using osmosis water, different water hardness levels and quiet disposal of wastewater.
Energy consulting
Energy consulting for buildings; assessment of heating systems or façades and support with energy-efficient property decisions.
Expert reports
Expert reports on building services installations; neutral assessments in cases of defects, faults or damage, as well as support when problems occur with existing systems.
Minergie
Minergie consulting, planning according to Minergie and preparation of Minergie applications; specialist partner services for energy-efficient buildings.
Overall coordination of building services
Overall coordination of the building services areas heating, ventilation and sanitary for private clients, architects and contractors.
GEAK
GEAK-related services in the field of energy consulting and building services.
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4.1/5

Stenz AG

Trust & reputation

ranQ Trust Score of Stenz AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Stenz AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Stenz 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%
Stenz 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%
Stenz AG scores 2.7 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.0.04%
Qualifications+0.00

Stenz AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 58%, 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.

Press

Media

October 3, 2013Media
Niederwil: Stenz hat Nachfolge geregelt
reussbote.ch

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Location

Aargauerstrasse 2
5610 Wohlen Ag

At a glance

Legal form
Corporation
UID
CHE-102.946.070
Founded
1984 · 42 years
Last commercial register change
January 13, 2026
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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