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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesBuchs ZhHans Brun AG Heizung + Sanitär
Hans Brun AG Heizung + Sanitär Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Hans Brun AG encompasses the planning, installation and maintenance of plants and systems in the areas of heating, cooling, sanitation, gas, water technology and renewable energies. The company offers comprehensive solutions for these areas, including service and standby, and places emphasis on sustainable and environmentally friendly solutions.

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Offering

Products & services

Industry:Plumbing & Building Services
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Hans Brun AG Heizung + Sanitär

✓ Offered
7
Heating
Heating system installations and service for new builds, conversions and renovations; heating planning, repairs, installation service and a 24-hour building-services emergency service.
Sanitary
Sanitary installations and service for new builds, renovations and conversions; bathroom conversions, repairs, planning and a 24-hour building-services emergency service.
Water technology
Water treatment and water hygiene for swimming pools, public facilities and industry; booster and disinfection systems, filtration technology, dosing technology and 24-hour service.
Renewable energies
Energy planning and implementation with heat pumps, solar systems, wood-fired heating and photovoltaics.
Gas service and maintenance
Service, maintenance and repair of gas-operated appliances such as cookers, instantaneous water heaters and room air heaters; burner adjustment, safety inspection and maintenance contracts.
Refrigeration engineering and air conditioning systems
Cooling systems and air-conditioning systems for offices, industrial halls, production facilities and IT rooms; consulting and installation for sustainable, environmentally friendly solutions.
Service and on-call duty
Maintenance and fault service for sanitary and heating systems; on-site solutions, maintenance contracts and 24-hour on-call service 365 days a year.
Trust & reputation

ranQ Trust Score of Hans Brun AG Heizung + Sanitär: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Hans Brun AG Heizung + Sanitär scores 55.5 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.28.224%
  • 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.85.610%
  • 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.100.08%
Hans Brun AG Heizung + Sanitär scores 92.3 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.82.07%
Hans Brun AG Heizung + Sanitär scores 85.0 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).85.022%
Hans Brun AG Heizung + Sanitär 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

Hans Brun AG Heizung + Sanitär reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.3 out of 5 stars from 28 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
3.3
of 5

Aggregated from 28 reviews across all connected sources

Sources
GGoogle3.328
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Furtbachstrasse 20
8107 Buchs Zh
Opening hours
Mon
07:00 - 16:30
Tue
07:00 - 16:30
Wed
07:00 - 16:30
Thu
07:00 - 16:30
Fri
07:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.835.112
Founded
2002 · 24 years
Last commercial register change
July 2, 2025
Employees
21 to 50
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.100.06%
  • 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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