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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkLotzwilFischer-Käser AG
Fischer-Käser AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Fischer-Käser AG is the provision of services and solutions in the field of building technology, particularly in the areas of: Sanitary, Heating, Plumbing, Chimney construction, Ventilation, Air conditioning, Solar, and Lightning protection. The company offers consulting, planning, and execution of projects in these areas and supports customers in selecting and implementing climate-friendly heating solutions.

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Offering

Products & services

Industry:Sheet Metal WorkSolar & Photovoltaics
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4.4/5

Fischer-Käser AG

✓ Offered9
Plumbing
Planning, execution, maintenance and repairs for new buildings and existing buildings; delivery and installation of sanitary fixtures as well as installations of gas, water and wastewater lines.
Heating
Planning, execution, maintenance and repairs for new buildings and existing buildings; delivery and installation of heat generators and heat distribution systems, as well as heating refurbishments.
Sheet metal work
Planning, execution, maintenance and repairs for new buildings and existing buildings; gutters, downpipes, metal sheets for roof connections and flashings, and metal cladding for roofs and façades.
Chimney construction
Planning, execution, maintenance and repairs for new buildings and existing buildings; chimney systems and flue gas systems in stainless steel or plastic for gas, oil and wood-fired appliances.
Ventilation
Planning, execution, maintenance and repairs for new buildings and existing buildings; comfort ventilation systems in residential construction and industrial ventilation.
Air conditioning
Planning, execution, maintenance and repairs for new buildings and existing buildings; air conditioning systems, air-conditioning units for room cooling, ceiling cooling systems and ground registers for comfort ventilation.
Solar
Planning, execution, maintenance and repairs for new buildings and existing buildings; solar thermal systems for domestic hot water, room and swimming pool heating, as well as photovoltaic systems for electricity generation.
Lightning protection
Planning, construction, inspection and additions to lightning protection systems; advice on cost contributions as well as support with applications for subsidies and maintenance/service.
Engineering
Planning and coordination services in building services engineering: HVAC-S planning, energy concepts, variant studies, simulations, solar systems and energy-efficient operational optimization.
Trust & reputation

ranQ Trust Score of Fischer-Käser AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Fischer-Käser AG scores 75.7 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.74.824%
  • 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.76.210%
  • 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.78.08%
Fischer-Käser AG scores 94.3 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.90.07%
Fischer-Käser 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%
Fischer-Käser AG scores 34.3 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 35.34.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Fischer-Käser AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 19 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
4.6
of 5

Aggregated from 19 reviews across all connected sources

Sources
GGoogle4.619
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Kohlplatzstrasse 38
4932 Lotzwil
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:00
Tue
07:30 - 12:00, 13:15 - 17:00
Wed
07:30 - 12:00, 13:15 - 17:00
Thu
07:30 - 12:00, 13:15 - 17:00
Fri
07:30 - 12:00, 13:15 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.172.275
Founded
1993 · 33 years
Last commercial register change
July 29, 2025
Employees
51 to 100
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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