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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesUrsenbachDaniel Graber Wärmetechnik GmbH
Daniel Graber Wärmetechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Daniel Graber Wärmetechnik GmbH is a heating specialist offering service, repairs, planning, installation and renovation of oil, gas and heat-pump systems. The company supplies and fits oil burners, boilers and heat pumps, installs and flushes underfloor heating and carries out work on oil tanks, piping and chimney renovation.

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Products & services

Industry:Plumbing & Building Services
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4.3/5

Daniel Graber Wärmetechnik GmbH

10
Heating service & repairs
Replacement of circulation pumps, expansion vessels, mixers, controls and heating pipes; troubleshooting oil burner faults; repairs on oil and gas appliances, hot-water boilers and valves.
Heating installation & renovation
Planning and installation of new heating systems, renovation of oil and gas heating systems, commissioning, pipework, as well as installation of domestic hot-water heat pump boilers.
Floor heating
Laying and flushing of floor heating systems, work on Danfoss valves, as well as floor heating with click system.
Heating oil tanks & supply
Installation of heating oil tanks and oil supply for heating systems.
Oil and gas heating: combustion control
Official measurement and combustion control in the canton of Bern for oil and gas heating systems.
Chimney renovation
Renovation of chimney systems as a specialist service in the heating sector.
Core drilling
Core drilling as specialist work in connection with heating installations and renovations.
Oil burners
Advisory, sales and installation of oil burners of all brands, including annual service to prevent breakdowns.
Oil and gas heating
Advisory, sales and installation of oil and gas heating systems with individual product recommendations, installation and personal on-site consultations.
Heat pump
Advisory, sales and installation of heat pump systems, including the WPSM system module for renovations and grant processing.
Trust & reputation

ranQ Trust Score of Daniel Graber Wärmetechnik GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Daniel Graber Wärmetechnik GmbH scores 79.5 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.78.624%
  • 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.65.210%
  • 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.100.08%
Daniel Graber Wärmetechnik GmbH scores 83.0 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%
Daniel Graber Wärmetechnik 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%
Daniel Graber Wärmetechnik GmbH scores 13.7 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 35.13.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Daniel Graber Wärmetechnik GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 12 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
4.8
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle4.812
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Gerberain 199
4937 Ursenbach
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Limited Liability Company
UID
CHE-113.542.570
Founded
2007 · 19 years
Last commercial register change
May 11, 2021
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.88.06%
  • 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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