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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringWinterthurBWS Bauphysik AG
BWS Bauphysik AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of BWS Bauphysik AG is consulting and expertise in the field of building physics, particularly in the areas of thermal, moisture and sound protection, as well as energy efficiency and sustainability in construction.

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Products & services

Industry:Technical Consulting & Engineering
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BWS Bauphysik AG

✓ Offered6
Building physics consulting
Consulting on thermal, moisture and sound insulation as well as on energy efficiency and sustainability in construction; pragmatic solutions for new builds and renovations.
Thermal insulation and protection against summer heat
Consulting on requirements of the energy act, dimensioning of thermal insulation, EN-102 documentation as well as assessment in accordance with SIA 180 and Minergie.
Energy efficiency and sustainable construction
Refurbishment concepts for building envelopes, energy balance calculations according to SIA 380/1, GEAK+ reports, embodied energy calculations as well as Minergie, Minergie-P and Minergie-A applications.
Acoustic insulation and room acoustics
Conceptual consulting, dimensioning of separating building elements, regulatory sound insulation documentation, sound insulation measurements, and room-acoustic measurements and measures.
Noise protection reports
Consulting on noise protection requirements, calculation of noise immission levels, noise protection reports for building permits, and documentation for HVAC installations and underground garage ramps.
Moisture protection and mould consultancy
Assessment of construction details, advice for moisture problems and mould growth, measurements of indoor climate, and transient moisture and vapour diffusion calculations.
Trust & reputation

ranQ Trust Score of BWS Bauphysik AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

BWS Bauphysik 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.
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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%
BWS Bauphysik AG scores 89.3 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.70.07%
BWS Bauphysik AG scores 85.0 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).85.022%
BWS Bauphysik AG scores 28.6 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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

BWS Bauphysik 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 54%, 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.

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Location

Hard 4
8408 Winterthur

At a glance

Legal form
Corporation
UID
CHE-114.611.133
Founded
2008 · 18 years
Last commercial register change
December 5, 2008
Employees
11 to 20
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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