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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsWichtrachKurt Senn AG
Kurt Senn AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the planning, installation, maintenance and renovation of heating and plumbing systems, including the sale and installation of heat pumps, oil heating systems, gas heating systems, wood heating systems, solar systems and Swedish stoves, as well as the renovation and conversion of bathrooms and shower toilets.

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Products & services

Industry:Solar & Photovoltaics
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Kurt Senn AG

✓ Offered12
Heating system installations
New installation of heating systems, planning, installation of radiators, cleaning and flushing of underfloor heating systems, as well as maintenance and repair work.
Heat pumps
Air-to-water heat pumps, brine-to-water heat pumps and water-to-water heat pumps, including personal consultation for residential properties.
Heating system renovation
Renovation and replacement of heating systems according to the latest technical standards, including overall coordination and on-site consultation.
Solar thermal system
Thermal solar systems for using solar energy for domestic hot water, heating support and pool water heating.
Wood heating
Pellet heaters, log wood heaters and wood chip heaters for heat and domestic hot water, also combinable with other systems.
Oil heating and gas heating
Oil and gas heating systems with condensing technology, replacement of boilers, and combination with solar thermal systems or heat pump boilers.
Bathroom renovation
Bathroom renovations and conversions with bathtubs, walk-in showers, bathroom furniture and other sanitary fixtures.
Plumbing installations
New sanitary installations, maintenance and repair, rainwater utilisation systems, underground service lines, and planning.
Shower toilet
Shower toilet from Geberit as an add-on, complete system or design solution, also installable later without conversion work.
Steam shower
Steam showers for home use, optionally with seating, a seating area, lighting, and sound and music systems.
Heat pump boiler
Heat pump boilers for domestic hot water, as a compact or split unit, with active heat recovery.
Limescale protection
Water softening and descaling systems to protect against limescale deposits in boilers, pipes and household appliances.
Trust & reputation

ranQ Trust Score of Kurt Senn AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Kurt Senn AG scores 65.4 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.59.024%
  • 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.70.510%
  • 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%
Kurt Senn 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%
Kurt Senn 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%
Kurt Senn AG scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kurt Senn AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.1 out of 5 stars from 15 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
4.1
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.115
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Austrasse 2
3114 Wichtrach
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Corporation
UID
CHE-107.966.654
Founded
1980 · 46 years
Last commercial register change
December 28, 2020
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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