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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureConstruction & Project ManagementIllnauDie Bau Leu GmbH
Die Bau Leu GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of the company 'Die Bau Leu GmbH' consists of planning, installing and maintaining heating systems, in particular heat pumps, gas heating systems, wood pellet and district heating systems, as well as providing sanitary and refrigeration services. The company offers its customers individually tailored solutions for their heating needs, with a focus on energy efficiency, environmental friendliness and cost-effective solutions.

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Products & services

Industry:Construction & Project Management
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Die Bau Leu GmbH

Specialized Construction Activities
Plumbing & Building Services
✓ Offered4
Heating systems
Heating systems for buildings, tailored to needs and budget; heat pumps, gas heating, wood pellets and district heating, including planning and installation.
Heat pumps
Heat pumps for heating and cooling buildings; use of air, ground or groundwater, including a cooling function in summer.
Cooling systems
Cooling solutions for buildings, with cooling via heat pumps and the corresponding systems for summer operation.
Plumbing
Plumbing work and building services solutions for building technology.
Trust & reputation

ranQ Trust Score of Die Bau Leu GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Die Bau Leu GmbH 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%
Die Bau Leu GmbH scores 75.7 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.83.012%
  • 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%
Die Bau Leu 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%
Die Bau Leu GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

Knowledge

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Comparisons

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Location

Rössliweg 4
8308 Illnau
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-335.418.608
Founded
2017 · 9 years
Last commercial register change
March 29, 2022
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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