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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesTherwilMüller & Partner Planungsbüro GmbH
Müller & Partner Planungsbüro GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Müller & Partner GmbH is the planning and coordination of heating, ventilation, air conditioning and sanitary technology (HVAC) for various construction projects, including new buildings, renovations and refurbishments. The company also offers additional services such as analyses, concepts, owner representation, quality assurance, project management and technical construction management.

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Products & services

Industry:Plumbing & Building Services
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Müller & Partner Planungsbüro GmbH

✓ Offered7
HVAC(S) design
Designs for HLKK(S) systems, including heating, ventilation, air conditioning, refrigeration and sanitary technology, as well as coordinated technical solutions for building projects.
Analyses & concepts
Analyses and concepts for technical building solutions, including concept development for heat supply and further planning-related preliminary clarifications.
Client representation
Client representation for GBT, HT, HLKKS and MSRL, representing the client’s interests in technical planning and execution processes.
Quality assurance HLKK
Quality assurance for HLKK projects, including review and support of technical planning and execution services.
Project management
Project management for technical building projects, from coordination to leading the planning and execution phase.
Specialist site supervision
Specialist site supervision for HLK and HLKK projects, with technical support on site and coordination of execution.
Advisory
Advisory on HLKKS technologies, technical solutions and their functional, economical and environmentally appropriate implementation.
Trust & reputation

ranQ Trust Score of Müller & Partner Planungsbüro GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

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Data basis 54% · As of October 2026

Müller & Partner Planungsbüro 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.
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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%
Müller & Partner Planungsbüro GmbH scores 67.8 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.64.612%
  • 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%
Müller & Partner Planungsbüro GmbH scores 83.3 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).83.322%
Müller & Partner Planungsbüro GmbH scores 6.6 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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Müller & Partner Planungsbüro GmbH reaches a ranQ Trust Score of 3.9 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 October 2026.

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

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Location

Bahnhofstrasse 26
4106 Therwil

At a glance

Legal form
Limited Liability Company
UID
CHE-235.978.806
Founded
2021 · 5 years
Last commercial register change
January 17, 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.88.06%
  • 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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