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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsSpiezBZS Heizung-Sanitär AG
BZS Heizung-Sanitär AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of BZS Heizung-Sanitär AG is the planning, installation, maintenance and repair of heating, sanitary and gas systems, as well as the laying of industrial pipes and the installation of solar systems.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered6
Heating
Heating systems for oil, firewood, pellets and heat pumps; solar support, heat distribution systems, underfloor heating, wall and ceiling heating systems as well as advice, planning, installation and service.
Plumbing
Sanitary installations and systems for drinking water, hot-water distribution systems, pressure boosting units, wastewater systems, wastewater pumping systems, compressed air installations, as well as bathroom and kitchen ventilation extraction units.
Gas
Gas installations from the gas meter for heating, hot water and kitchen; LPG systems with an individual storage tank as well as advice, planning, execution, acceptance and instruction.
Solar
Solar thermal collectors in different designs for domestic hot-water preparation or heating support; use of alternative energies and solutions with heat pumps and pellet systems.
Service lines
Construction of service lines for drinking water from the source to the consumer as well as for the discharge of wastewater to the ARA, in public and private areas.
Emergency service
Emergency service reachable around the clock for existing and new customers, including on public holidays, by phone without additional costs.
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4.4/5

BZS Heizung-Sanitär AG

Trust & reputation

ranQ Trust Score of BZS Heizung-Sanitär AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

BZS Heizung-Sanitär AG scores 80.9 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.82.024%
  • 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.67.110%
  • 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.95.08%
BZS Heizung-Sanitär AG scores 89.3 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.70.07%
BZS Heizung-Sanitär AG 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%
BZS Heizung-Sanitär AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

BZS Heizung-Sanitär AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.9 out of 5 stars from 13 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
4.9
of 5

Aggregated from 13 reviews across all connected sources

Sources
GGoogle4.913
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Simmentalstrasse 33
3700 Spiez
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.680.910
Founded
2005 · 21 years
Last commercial register change
January 19, 2016
Employees
11 to 20
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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