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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsEffretikonBoos Wärmetechnik GmbH
Boos Wärmetechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Boos Wärmetechnik GmbH is the planning, installation, maintenance and repair of heating systems, sanitary and solar systems. The company also provides services in the field of building technology, including the conversion of existing heating systems and the installation of thermal solar systems.

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Boos Wärmetechnik GmbH

Heating
Renovation of existing heating systems, replacement of heating systems and switching to other energy sources; heat pumps, pellet heating systems and, where applicable, gas and oil heating systems, including thermal solar installations.
Plumbing
Bathroom conversions, replacement of appliances and fittings, installation of descaling systems as well as descaling of hot-water boilers and boiler replacement, including with heat-pump boilers.
Thermal solar systems
New installations of solar systems, functional and leak tests, checking the solar fluid, repair work and maintenance contracts.
Planning
Customer consulting, design and sizing, renovation concepts, tenders, as well as building submissions and applications for cantonal subsidies for heating system conversions.
Repairs / Service
Repairs of heating, plumbing and thermal solar systems, flushing of underfloor heating, replacement of radiator valves, descaling of hot-water boilers and replacement of water filters.
Trust & reputation

ranQ Trust Score of Boos Wärmetechnik GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Boos Wärmetechnik GmbH scores 67.5 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.60.324%
  • 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.58.610%
  • 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%
Boos 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%
Boos 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%
Boos Wärmetechnik GmbH scores 9.4 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 35.9.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Boos Wärmetechnik GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.1 out of 5 stars from 9 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
4.1
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.19
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Büelstrasse 2
8307 Effretikon
Opening hours
Mon
07:30 - 12:00, 13:00 - 16:30
Tue
07:30 - 12:00, 13:00 - 16:30
Wed
07:30 - 12:00, 13:00 - 16:30
Thu
07:30 - 12:00, 13:00 - 16:30
Fri
07:30 - 12:00, 13:00 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-110.276.188
Founded
2003 · 23 years
Last commercial register change
April 6, 2018
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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