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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberSt. GallenBion Bauhaus AG
Bion Bauhaus AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Bion Bauhaus AG is Heim AG Heizsysteme. Heim AG Heizsysteme acquired Bion Bauhaus AG on 1 July 2023 and handles enquiries and services through its heating-systems business, which provides renewable-energy heating solutions such as heat pumps, wood-energy systems, solar systems and energy-management solutions.

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Service area

Offering

Products & services

Industry:Plumber
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4.1/5

Bion Bauhaus AG

Energy technology
✓ Offered12
Heat pumps
Heat pumps in all output sizes for single-family homes up to industrial developments, including air-to-water and brine-to-water heat pumps, large heat pumps and heat-pump boilers.
Wood energy
Wood-fired heating systems, fuel logistics, residual-fuel logistics and flue gas aftertreatment for renewable heat and energy solutions.
Solar systems
Solar installations for renewable energy solutions, complemented by suitable components and system integration.
Energy management
Intelligent energy management systems for efficient and sustainable use of energy.
Drying technology
Drying technology as part of the range of heat generators and renewable energy solutions.
Hydrogen solutions
Hydrogen solutions as part of the range of renewable heat generators and energy solutions.
Consulting
Consulting from the initial idea through project planning to implementation, and throughout the entire service life of the plant.
Planning
Planning of renewable energy solutions and systems across all product groups.
Execution & installation
Execution and installation of systems and equipment in the field of renewable energy solutions.
Production
Production of components and systems for renewable heating and energy solutions.
Development
Development of solutions, components and systems for renewable energy technology.
Operation & maintenance
Operation and maintenance of the systems throughout their entire service life, complemented by customer service and a service hotline.
Trust & reputation

ranQ Trust Score of Bion Bauhaus AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of November 2026

Without public customer reviews the score stays capped.

Bion Bauhaus 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%
Bion Bauhaus AG scores 90.9 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%
Bion Bauhaus AG scores 86.7 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).86.722%
Bion Bauhaus AG scores 55.0 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Bion Bauhaus 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 November 2026.

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

Press

Media

February 9, 2023Media
Heizen mit Eis? In Kloten wird diese effiziente Methode genutzt
tagblatt.ch

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Location

Bionstrasse 4
9015 St. Gallen

At a glance

Legal form
Corporation
UID
CHE-107.663.171
Founded
1994 · 32 years
Last commercial register change
October 5, 2023
Employees
11 to 20

Active in 1 of 26 cantons

  • SGSt. Gallen
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.85.03%
    • Full methodology

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