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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding services engineerHallauRDB Planung GmbH
RDB Planung GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

RDB Planung GmbH provides planning and consulting for building services, including heating, ventilation, air conditioning, refrigeration and plumbing. Its services also include energy and client consulting, energy certificates, subsidy applications, and support throughout project phases from strategic planning to operation.

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Service area

Offering

Products & services

Industry:Building services engineer
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3.6/5

RDB Planung GmbH

Energy consulting
✓ Offered6
HLKKS planning
Planning for heating, ventilation, air conditioning, refrigeration and sanitary services; strategic planning, feasibility study, project design, tendering, implementation and operation in accordance with SIA standards.
Building services consulting
Consulting for those responsible for construction, architects, commercial businesses and private individuals; technical, economic and ecological solutions for building services and HLKKS projects.
Energy consulting
Energy consulting, energy statements, energy statement according to SIA 380/1, subsidy applications and support with energy-related questions.
Client advisory
Advisory services for building services projects, including guidance through the project phases and support with technical decisions.
Private inspections
Private inspections in the fields of heating, ventilation and thermal insulation, with authorization in several cantons.
Heating system refurbishments
Heating system refurbishments for existing installations as part of building services and energy optimisation projects.
Trust & reputation

ranQ Trust Score of RDB Planung GmbH: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 96% · As of November 2026

RDB Planung GmbH scores 52.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
RDB Planung GmbH scores 57.1 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.39.612%
  • 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%
RDB Planung GmbH scores 86.7 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).86.722%
RDB Planung 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%
Qualifications+0.00

RDB Planung GmbH reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Höhenweg 5
8215 Hallau
Opening hours
Mon
08:00 - 12:00, 13:00 - 16:30
Tue
08:00 - 12:00, 13:00 - 16:30
Wed
08:00 - 12:00
Thu
13:00 - 16:30
Fri
08:00 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-411.190.705
Founded
2024 · 2 years
Last commercial register change
November 24, 2025
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

    Active in 2 of 26 cantons · 4 municipalities

    • SHHallau
    • SHSchaffhausen
    • ZHWinterthur
    • ZHZurich

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