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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWaste Management IndustryGontenschwilKanalfrei AG
Kanalfrei AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Kanalfrei AG is sewer and surface cleaning, including specific services such as drain clearance, manhole emptying, surface cleaning, garage and floor cleaning, pond cleaning, sewer television, foreign object disposal and holiday representation for sewer cleaners.

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Offering

Products & services

Industry:Waste Management Industry
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4.4/5

Kanalfrei AG

✓ Offered11
Sewer cleaning
Cleaning of shafts, wastewater and rainwater pipes, as well as proper disposal of the vacuumed material; also offered as professional sewer and drain cleaning in Aargau and Solothurn.
Drain unblocking
Unblocking and cleaning of drains, toilets, sinks, bathtubs, lavabos and other waste outlets; with a 24h emergency service for fast help.
Shaft emptying
Regular emptying and vacuuming of shafts and pipes to prevent flooding and blockages.
Sewer inspection / Sewer TV
Inspection of sewers and pipes using a sewer TV camera to create images and videos in high resolution.
Leak tests
Testing pipes for leaks to identify damage, moisture and consequential costs at an early stage.
Leak detection
Locating water leaks in pipes and buildings to prevent rising water costs and building damage.
Disposal of foreign materials
Professional and environmentally appropriate disposal of sludge, oil, fats and other foreign materials.
Surface and well cleaning
Cleaning of terraces, outdoor areas and wells with high-pressure equipment; also referred to as surface and terrace cleaning.
Pond cleaning
Cleaning of ponds and biotopes to restore ecological balance.
Flushing after new build / flushing after renovation
Flushing of wastewater systems after new construction or renovation work so that the pipes are functional from the start.
24h emergency service
Emergency service reachable around the clock for blockages, water damage, sewer TV inspections, construction flushing and odour problems.
Trust & reputation

ranQ Trust Score of Kanalfrei AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Kanalfrei AG scores 97.0 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.96.424%
  • 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.100.010%
  • 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%
Kanalfrei AG scores 70.4 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.64.612%
  • 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%
Kanalfrei AG scores 83.3 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).83.322%
Kanalfrei AG scores 10.0 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 35.10.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kanalfrei AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 87 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 87 reviews across all connected sources

Sources
GGoogle587
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Industriestrasse 1283
5728 Gontenschwil
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Corporation
UID
CHE-218.256.391
Founded
2021 · 5 years
Last commercial register change
August 13, 2025
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.
100.0
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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