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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceObfeldenBühlmann Instandhaltung GmbH
Bühlmann Instandhaltung GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Bühlmann Instandhaltung is the maintenance of building technical systems and components, including assembly, disassembly, consulting, inventory and hygiene inspection for air handling systems. The company also offers products and services in the areas of ventilation, air conditioning, fire protection dampers, heat recovery and sound attenuator silencers.

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Products & services

Industry:Building Maintenance
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3.8/5

Bühlmann Instandhaltung GmbH

✓ Offered
5
Maintenance of HVACRSE systems
Condition assessment, consulting, maintenance and restoration of heating, ventilation, air conditioning, refrigeration, sanitary and electrical systems; carried out according to standards, with partners for replacement and implementation.
Ventilation service
Service for controlled residential ventilation and industrial ventilation systems; airflow measurements, system analyses, deep cleaning of heating, cooling and heat-recovery (WRG) registers, hygiene checks and maintenance work.
Hygiene inspections and analyses
Hygiene inspections for air-handling and HVAC systems; surface analyses, water testing, Legionella tests in cooling towers, as well as assessment of the hygiene condition of building services units and components.
Installation and dismantling of building services systems and components
Installation and removal of ventilation ducts, chilled-water lines and building services units; including planning, coordination, execution, controlling and consulting.
Products for ventilation systems
Bag filters, PPE for cleaning ventilation systems, and other items for ventilation systems and maintenance in the shop.
Trust & reputation

ranQ Trust Score of Bühlmann Instandhaltung GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Bühlmann Instandhaltung GmbH scores 53.8 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.70.824%
  • 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.27.910%
  • 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.35.08%
Bühlmann Instandhaltung GmbH scores 75.7 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.83.012%
  • 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.55.07%
Bühlmann Instandhaltung GmbH 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%
Bühlmann Instandhaltung GmbH scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bühlmann Instandhaltung GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Dorfstrasse 73g
8912 Obfelden
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:30
Tue
08:00 - 12:00, 13:00 - 17:30
Wed
08:00 - 12:00, 13:00 - 17:30
Thu
08:00 - 12:00, 13:00 - 17:30
Fri
07:00 - 12:00, 13:00 - 15:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-355.968.906
Founded
2017 · 9 years
Last commercial register change
March 2, 2017
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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