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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesGwatt (Thun)Müller + Hänni AG
Müller + Hänni AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core business of Müller + Hänni AG encompasses the areas of heating, sanitation, planning, service and energy consulting, particularly in the field of building services and building technology. The company offers services such as energy planning, 3D bathroom planning, heat pump consulting, climate technology and impulse consulting.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered4
Heating refurbishments and heating systems
Heating refurbishments, renewable energy, solar energy, oil and gas heating, district heating, heating cost calculators, and advice on suitable heating systems and heating replacement.
Plumbing installations and bathroom renovations
Plumbing installations, new builds, conversions and renovations, bathroom refurbishments, 3D bathroom planning, barrier-free bathrooms, kitchen conversions, as well as water treatment and descaling systems.
Energy consulting
Energy consulting, GEAK®, GEAK Plus, calculations for individual building components, NEM, system documentation SIA 380/1, Minergie new construction or modernization, as well as impulse consulting for heating replacement.
Service and maintenance contracts
Service work for heating and building services faults, 24-hour emergency service, individual maintenance contracts, and quick help on site.
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4.1/5

Müller + Hänni AG

Trust & reputation

ranQ Trust Score of Müller + Hänni AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Müller + Hänni AG scores 62.8 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.51.924%
  • 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.63.210%
  • 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.95.08%
Müller + Hänni AG scores 89.3 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.100.012%
  • 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.70.07%
Müller + Hänni AG 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%
Müller + Hänni AG scores 57.1 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 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Müller + Hänni AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.8 out of 5 stars from 11 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
3.8
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle3.811
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Gwattstutz 15
3645 Gwatt (Thun)
Opening hours
Mon
07:30 - 11:50, 13:30 - 17:00
Tue
07:30 - 11:50, 13:30 - 17:00
Wed
07:30 - 11:50, 13:30 - 17:00
Thu
07:30 - 11:50, 13:30 - 17:00
Fri
07:30 - 11:50, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.910.312
Founded
1993 · 33 years
Last commercial register change
April 26, 2021
Employees
11 to 20
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.
100.0
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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