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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesBernForster AG für Tanksanierungen und Revisionen
Forster AG für Tanksanierungen und Revisionen Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Forster AG is the provision of services and solutions for tanks and tank systems, particularly in the area of heating oil, fuel and rainwater tanks. This includes, among other things: tank revision and renovation, tank dismantling and decommissioning, new tank installations, pipeline construction and renovation, tank accessories and safety technology (e.g. leak detectors, level indicators, cathodic protection systems), oil management systems, rainwater utilization and treatment, as well as service, maintenance and repair services for tanks and tank systems.

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Products & services

Industry:Specialized Construction Activities
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3.8/5

Forster AG für Tanksanierungen und Revisionen

✓ Offered9
Tank inspection
Tank inspection with internal cleaning or visual inspection, including cleaning, drying, testing of the tank compartment and safety equipment, and reporting to authorities.
Tank rehabilitation
Rehabilitation of heating oil and petrol station facilities, including internal refurbishment, tank compartment refurbishment, coating, shaft refurbishment and the tank inner lining.
New installation of tank systems
Planning and construction of new tank systems for heating oil, petrol stations and commercial applications, including technical clarifications and execution.
Decommissioning and dismantling of tank systems
Professional deactivation, draining, cleaning, degassing, blanking-off, deregistration, and tank dismantling using the cold process with disposal of the material.
Rainwater systems
Planning, conversion and construction of rainwater storage tanks with filter system, pump, pump control unit, level probe, overflow and accessories.
Service and accessories for tank systems
Oil filtration, product change, leak detection devices, cathodic protection systems, level indicators, oil management, filling safeguards and burst protection.
Tank systems for agriculture
Tank systems for agriculture with diesel and AdBlue, including refuelling equipment, handling area, cleaning and inspection of existing systems.
Tank systems for industrial facilities
Cleaning, inspection, rehabilitation and repurposing of commercial industrial tank systems, with safety assessments, planning, coordination and execution.
HVO bio-fuel
HVO as a climate-friendly diesel alternative for fleets and businesses, with advice on use, storage and conversion of existing tank infrastructure.
Trust & reputation

ranQ Trust Score of Forster AG für Tanksanierungen und Revisionen: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Forster AG für Tanksanierungen und Revisionen scores 49.8 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.68.224%
  • 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.17.610%
  • 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%
Forster AG für Tanksanierungen und Revisionen scores 85.5 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%
Forster AG für Tanksanierungen und Revisionen scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Forster AG für Tanksanierungen und Revisionen scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Forster AG für Tanksanierungen und Revisionen reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Spitalgasse 28
3011 Bern
Opening hours
Mon
07:30 - 17:30
Tue
07:30 - 17:30
Wed
07:30 - 17:30
Thu
07:30 - 17:30
Fri
07:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.812.427
Founded
1976 · 50 years
Last commercial register change
April 28, 2026
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.100.06%
  • 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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