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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsBernGfeller Heizungsbau AG
Gfeller Heizungsbau AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Gfeller Heizungsbau AG is the planning, installation and maintenance of heating systems, including traditional and modern heating technologies such as solar systems, heat pumps, wood heating systems, district heating and gas/oil heating systems. The company also offers consulting and service for existing heating systems.

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Products & services

Industry:Solar & Photovoltaics
✓ Offered
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Gfeller Heizungsbau AG

7
Consulting, design, installation and maintenance of heating systems
Advice, planning, installation and maintenance of heating systems in new builds, conversions and renovations; oil, gas and electric heating systems, alternative systems, system comparisons and cost-effectiveness calculations.
Heat pumps
Consulting and planning of air, groundwater and ground-source (borehole) heat pumps; installation of piping, radiators and floor heating, boiler replacement, cost-effectiveness calculations and subsidy advice.
Solar systems
Photovoltaic systems for clean electricity, sale and installation of collectors, replacing and expanding existing systems, clarifications regarding compliance with regulations, and subsidy advice.
Wood heating systems
Consulting, planning, installation and installation of pellet, wood-chip and log-wood heating systems; installation of radiators, floor heating, convectors and boilers, including cost-effectiveness calculations.
District heating
Consulting and planning of district-heating interface units for low and high temperatures; installation of piping, radiators and floor heating, cost-effectiveness calculations and subsidy advice.
Gas and oil heating systems
Consulting and planning of gas and oil heating systems; installation of piping, radiators and floor heating, renovation of heating boilers, as well as maintenance and repair service with on-call service.
Maintenance and repair service for heating systems
Quick service for existing heating systems in case of faults, leaks and failures; maintenance, servicing, repairs and 24/7 on-call service.
Trust & reputation

ranQ Trust Score of Gfeller Heizungsbau 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.

Gfeller Heizungsbau 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.
x
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%
Gfeller Heizungsbau AG scores 85.5 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%
Gfeller Heizungsbau 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%
Gfeller Heizungsbau AG scores 77.1 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 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gfeller Heizungsbau 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.

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Location

Tannenweg 14
3012 Bern

At a glance

Legal form
Corporation
UID
CHE-116.379.527
Founded
2010 · 16 years
Last commercial register change
August 22, 2025
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.70.03%
    • Full methodology

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