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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesZurichKälin Sanitär+Heizung AG
Kälin Sanitär+Heizung AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of KÄLIN SANITÄR + HEIZUNG AG is the planning, execution and repair of sanitary and heating systems, including the installation of heat pumps, solar systems, wood-fired heating systems, gas and oil heating systems, radiators and underfloor heating, as well as the renovation and modernization of bathrooms and heating systems.

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Offering

Products & services

Industry:Plumbing & Building ServicesSpecialized Construction Installations
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4.3/5

Kälin Sanitär+Heizung AG

✓ Offered6
Planning
Planning of all phases from feasibility studies and preliminary projects through specialist coordination, approvals and Minergie applications to tenders, detailed design and building documentation.
Sanitary installations
Bathroom renovations, bathtub replacement, new-build installations, domestic hot-water treatment, descaling systems, boiler descaling, filter service as well as service for taps, appliances and flush cisterns.
Heating installations
Heating refurbishments, boiler and control replacement, chimney refurbishment, heat pumps, district heating, wood-fired systems, solar installations as well as service, regulation and operational optimisation.
Ventilation installations
Planning, installation, maintenance and repair of ventilation systems for residential buildings, offices and commercial properties, including functional checks, operational optimisation and control replacement.
Refrigeration and air conditioning
Planning, installation, commissioning and servicing of refrigeration and air-conditioning systems, supplemented with functional checks, operational optimisation, control replacement and maintenance.
Service and maintenance
24/7 emergency service, repairs, regular maintenance, inspections, functional tests, filter and boiler maintenance, pump replacement as well as maintenance of heating, sanitary, ventilation and air-conditioning systems.
Trust & reputation

ranQ Trust Score of Kälin Sanitär+Heizung AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Kälin Sanitär+Heizung AG scores 75.0 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.65.024%
  • 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.82.910%
  • 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%
Kälin Sanitär+Heizung 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%
Kälin Sanitär+Heizung 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%
Kälin Sanitär+Heizung AG scores 40.0 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kälin Sanitär+Heizung AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.3 out of 5 stars from 25 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
4.3
of 5

Aggregated from 25 reviews across all connected sources

Sources
GGoogle4.325
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Freilagerstrasse 28
8047 Zurich
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 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.742.909
Founded
2010 · 16 years
Last commercial register change
October 23, 2025
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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