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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesBellikonFrei & Affentranger Gebäudetechnik GmbH
Frei & Affentranger Gebäudetechnik GmbH Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Frei & Affentranger Gebäudetechnik GmbH is the provision of services in the field of sanitary and heating technology, including the installation, maintenance, repair and renovation of sanitary facilities, heating systems, heat pumps, photovoltaic and solar thermal systems, as well as water treatment and wastewater systems.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered12
Sanitary installations
Water installation, drainage systems and water treatment for new builds and refurbishments, including cold and hot water lines, drainage, fittings, washbasins and pressure-boosting systems.
Heating installations
Heating systems for buildings, including heat pumps, oil and gas heating, and underfloor heating; planning, installation, maintenance and modernisation are mentioned.
Heat pumps
Air-to-water, water-to-water and brine-to-water heat pumps for new builds and existing buildings, with installation, maintenance and advice on efficient heating solutions.
Renewable energy systems
Photovoltaics and solar thermal systems for using solar energy, including planning, installation and maintenance of systems for electricity and heat generation.
Bathroom refurbishments
Bathroom refurbishments as part of conversions and renovations, aligned with new technical requirements, environmental awareness and modern use concepts.
Pipe rehabilitation
Rehabilitation of ageing piping systems in buildings when lines need renewal or adaptation to their current condition.
Boiler refurbishments
Refurbishment of boiler systems for hot-water production, with reference to replacing fossil systems and using contemporary alternatives.
Heating refurbishments
Modernisation and replacement of existing heating systems, taking account of location, building condition, construction year and insulation standard.
Heating service
Heating system flushing, pressure testing, leak detection, efficiency testing, maintenance, adjustment and optimisation, plus advice on modernisation.
Sanitary service
Responsive customer service for sanitary systems, including fault resolution and service calls outside normal working hours.
Boiler descaling
Descaling of boiler systems to improve heat transfer and reduce energy, repair and operating costs.
Service contracts and inspections
Regular inspections and maintenance contracts to assess system condition and derive optimisation proposals.
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4.1/5

Frei & Affentranger Gebäudetechnik GmbH

Trust & reputation

ranQ Trust Score of Frei & Affentranger Gebäudetechnik GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Frei & Affentranger Gebäudetechnik GmbH scores 75.8 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.72.924%
  • 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.63.210%
  • 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%
Frei & Affentranger Gebäudetechnik 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%
Frei & Affentranger Gebäudetechnik GmbH scores 85.0 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).85.022%
Frei & Affentranger Gebäudetechnik GmbH scores 4.6 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 35.9.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Frei & Affentranger Gebäudetechnik GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.6 out of 5 stars from 11 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.611
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

May 11, 2024Media
Neues Team ist für Kundenwünsche am Start
reussbote.ch

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Location

Badenerstrasse 5
5454 Bellikon
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-108.558.128
Founded
1997 · 29 years
Last commercial register change
March 15, 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.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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