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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSeuzachAndreas Müller GmbH
Andreas Müller GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Andreas Müller GmbH is an engineering office for energy and climate technology focused on planning heating, ventilation, air‑conditioning and refrigeration systems. The firm provides comprehensive and renovation planning and delivers projects for heat pumps, wood‑energy systems, district heating, solar and fossil‑fuel installations, covering planning, implementation and operational support.

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Products & services

Industry:Technical Consulting & Engineering
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Andreas Müller GmbH

✓ Offered10
Overall planning for building services systems
Condition assessments for building services systems, energy and renovation advisory, preliminary design and cost estimate, construction project and cost quotation, tendering, detailed design, specialist site supervision, inspections, and operational optimisations.
Overall planning for the refurbishment of heat generation systems
Survey of existing installations, development of refurbishment concepts, advice on the energy source, profitability calculations, tendering, detailed design, site supervision, inspections and operational optimisations.
Heat pump systems
Design and implementation of heat pump systems for heating systems in buildings.
Wood energy systems
Wood chip-fired heating installations for medium and higher heating capacities, and pellet-fired installations for smaller capacities, for example for single- and multi-family houses.
Waste heat and ambient heat
Utilisation of waste heat from sewage treatment plants, wastewater channels, process exhaust air, refrigeration generation and compressed air compressors, as well as heat recovery.
District heating
Local and district heating networks with wood energy systems or large energy sources, including preliminary studies, feasibility analyses, profitability calculations, heat price setting and implementation as general planner.
Fossil energy systems
Oil-fired heating installations and gas-fired heating installations.
Solar energy systems
Thermal solar systems for domestic hot water production.
Ventilation and air conditioning systems
Controlled residential ventilation, systems for office, commercial and industrial buildings, and refurbishment of existing ventilation and air-conditioning central units.
Refrigeration systems
Refrigeration generation systems, utilisation of waste heat for heating purposes and use of freecooling.
Trust & reputation

ranQ Trust Score of Andreas Müller GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Andreas Müller 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%
Andreas Müller GmbH scores 79.8 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.92.512%
  • 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%
Andreas Müller 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%
Andreas Müller GmbH scores 0.6 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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Andreas Müller GmbH reaches a ranQ Trust Score of 4.1 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

Deisrütistrasse 20
8472 Seuzach

At a glance

Legal form
Limited Liability Company
UID
CHE-341.865.499
Founded
2014 · 12 years
Last commercial register change
May 25, 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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