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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesZurichBühlmann Heizungen AG
Bühlmann Heizungen AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Bühlmann Heizungen AG designs, installs and maintains heating systems and heat-distribution solutions. The company provides consulting, project planning, maintenance contracts and a 24‑hour emergency service, and works with technologies such as heat pumps, district heating, pellets and biogas.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered9
Advice, planning, installation and maintenance of heating systems
Advice, planning, installation and maintenance of heating systems for new and existing buildings; including coordination, commissioning and support throughout the entire project lifecycle.
Heat pumps
Heat pumps for air, ground or groundwater; including solutions with ground probes and outdoor air, for heating and domestic hot water applications.
District heating
District heating connections and district heating transfer stations for buildings; connection to central heat sources and distribution via an insulated pipe network.
Pellet heating systems
Pellet heating systems for heating and hot water; automatic feeding and combustion of wood pellets as an alternative to oil-fired heating.
Biogas heating systems
Biogas heating systems for heating and, if applicable, electricity; use of biogas from organic waste with a gas boiler or a combined heat and power plant.
Heat distribution
Heat distribution with radiators, underfloor heating and ceiling heating; tailored to new builds, renovations and energy efficiency.
Energy-efficient renovation
Advice on energy-efficient renovation of houses; replacement of old oil and gas heating systems, selection of modern heating solutions and optimisation of heat distribution.
24/7 emergency service
On-call service for heating breakdown, faults or leaks; rapid trouble-shooting by service technicians seven days a week.
Service and maintenance contract
Regular maintenance of heating systems including cleaning, functional checks, safety inspections, control optimisation and documentation.
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4.1/5

Bühlmann Heizungen AG

Trust & reputation

ranQ Trust Score of Bühlmann Heizungen AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Bühlmann Heizungen AG 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%
Bühlmann Heizungen AG scores 87.1 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.55.07%
Bühlmann Heizungen AG 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%
Bühlmann Heizungen AG scores 9.7 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 35.9.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bühlmann Heizungen AG 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.

Knowledge

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Location

Seestrasse 354
8002 Zurich

At a glance

Legal form
Corporation
UID
CHE-102.345.120
Founded
1951 · 75 years
Last commercial register change
October 29, 2024
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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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