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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsFreienbachKempf Tank-Service AG
Kempf Tank-Service AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Kempf Tank-Service AG is the revision, maintenance and renovation of tanks and tank systems, particularly in the area of heating oil, diesel, gasoline and solvent tanks, as well as the manufacture of new tanks and the execution of work in the field of environmental and water protection. This also includes special services such as final inspections, dismantling, concrete milling, drilling, sandblasting, spray coating and the lining of protective structures.

AI-generated
Offering

Products & services

Industry:General Contractors
✓ Offered11
Tank Inspection and Maintenance
Inspection and maintenance of tank systems for heating oil, diesel, petrol and solvents; internal inspection, operational safety, value retention and environmentally responsible servicing.
Final Inspection and Dismantling
Emptying, dismantling and disposal of tank systems and piping; professional, environmentally responsible decommissioning with controlled recycling of recoverable materials.
New Tank Systems
Supply and installation of domestic tanks and prismatic basement tanks, including containment trays, double-wall systems and leak protection for safe storage.
Containment Lining
Lining of containment structures with GRP/PVC and epoxy sealing; protection against oil leaks, compliance with regulations and sealing for new and existing buildings.
Internal Liner
Installation of a custom PVC internal liner with leak detector in existing tanks; sealed tank-in-tank solution with corrosion protection without excavation.
Leak Detector Service
Annual functional and safety testing of leak detectors for tank systems, including handling of formalities and regulatory compliance.
Vertical Tank Shell Rehabilitation
External corrosion protection and shell rehabilitation of vertical tanks using vacuum blasting; including disposal, permits and maintenance in line with regulations.
Water Reservoir Conversion
Conversion of existing tanks into rainwater reservoirs for washing, garden irrigation and toilet flushing; use of rainwater instead of drinking water.
Manhole Chamber
GRP manhole chamber for tank systems with sealing of the access zone, corrosion protection and adaptation to existing manholes up to NW 600.
Concrete Cutting and Drilling
Concrete cutting and drilling for tank systems and heating works; enlarging access openings, adding cross-ventilation and making further structural adjustments.
Spray Coating
Internal tank spray coatings in thin or thick build-up; sandblasting, epoxy resin application, thickness control and pore testing.
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4.1/5

Kempf Tank-Service AG

Trust & reputation

ranQ Trust Score of Kempf Tank-Service AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Kempf Tank-Service AG scores 65.2 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.73.724%
  • 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.68.910%
  • 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.35.08%
Kempf Tank-Service AG scores 90.9 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%
Kempf Tank-Service 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%
Kempf Tank-Service AG scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kempf Tank-Service AG 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 14 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 14 reviews across all connected sources

Sources
GGoogle4.614
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Strandweg 2
8807 Freienbach
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.740.323
Founded
1985 · 41 years
Last commercial register change
June 2, 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.85.03%
    • Full methodology

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