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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesRorschachHydro Plus Engineering GmbH
Hydro Plus Engineering GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Hydro Plus Engineering GmbH is the planning and realization of sustainable building and energy technology systems, particularly in the field of renewable energies such as heat, power and e-mobility. The company offers individual solutions for residential and commercial properties, including the planning and realization of heating, ventilation, sanitation and energy systems, as well as the integration of photovoltaic and heat pump systems.

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Products & services

Industry:Plumbing & Building Services
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Hydro Plus Engineering GmbH

6
Building Services Engineering Design
Planning of heating, ventilation, sanitary and solar systems, plus building drainage; on request in 3D/BIM and as specialist coordination across trades.
Energy Concepts and Consulting
Consulting, concepts and surveys for renovation and new builds; covering heating replacement, solar energy, heat pumps, air renewal, insulation and window replacement.
Solar Installations
Consulting, planning, installation and turnkey delivery of solar systems; including maintenance, monitoring, project management, acceptance, safety checks and subsidy applications.
Heat Pump Solutions
Planning and implementation of heat pumps for heating and hot water; including feasibility checks, heating replacement, permits and subsidy coordination.
Energy Management
Intelligent control and networking of energy flows in buildings; for self-consumption, integration of solar systems and heat pumps, plus charging stations and other loads.
Building Automation and Smart Home
Building automation and smart home technology for operating comfort, safety and optimised energy consumption; linked to the control of building technical systems.
Trust & reputation

ranQ Trust Score of Hydro Plus Engineering 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

Hydro Plus Engineering 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%
Hydro Plus Engineering GmbH scores 82.0 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.97.712%
  • 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%
Hydro Plus Engineering GmbH scores 83.3 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).83.322%
Hydro Plus Engineering 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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Location

Mariabergstrasse 3
9400 Rorschach

At a glance

Legal form
Limited Liability Company
UID
CHE-464.744.186
Founded
2012 · 14 years
Last commercial register change
March 13, 2024
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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