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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberSevelenH2O-Plan GmbH
H2O-Plan GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of H2O-Plan GmbH is the planning of sanitary and heating systems for Switzerland and Liechtenstein. The company offers innovative, efficient and cost-effective solutions for the strategic planning, operation and maintenance of sanitary and heating systems.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Plumber
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4.0/5

H2O-Plan GmbH

✓ Offered2
Sanitary planning
Sanitary installations for residential and commercial new-builds or renovations; concept, calculation of load values, design, cost estimate, tendering and plans.
Heating planning
Heating systems for residential and commercial new-builds or renovations; concept, calculations according to SIA 384.201 and 380.1, design, cost estimate and execution plans.
Trust & reputation

ranQ Trust Score of H2O-Plan GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

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Data basis 54% · As of November 2026

H2O-Plan 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%
H2O-Plan GmbH scores 72.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.75.012%
  • 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%
H2O-Plan GmbH 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%
H2O-Plan GmbH scores 4.6 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 35.4.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

H2O-Plan GmbH reaches a ranQ Trust Score of 4.0 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 November 2026.

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

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Location

Jörlisbüel 16
9475 Sevelen

At a glance

Legal form
Limited Liability Company
UID
CHE-391.982.138
Founded
2019 · 7 years
Last commercial register change
March 3, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • SGSevelen
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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