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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsLohn-AmmannseggKläy Haustechnik AG
Kläy Haustechnik AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Kläy Haustechnik AG is a building services company that designs and installs sanitary, heating and ventilation systems. Its services include solar systems, maintenance/service and project planning and execution.

AI-generated
Offering

Products & services

Industry:Solar & Photovoltaics
✓ Offered2
Plumbing
Sanitary installations, bathroom planning, single- and multi-family homes, industrial, commercial and public buildings, service, maintenance, water softening, Quooker, heat pump boilers and planning.
Heating
Heating installations with heat pumps, pellet and wood systems, district heating and heat networks, underfloor heating, special systems, service, maintenance and planning.
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4.4/5

Kläy Haustechnik AG

Trust & reputation

ranQ Trust Score of Kläy Haustechnik AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 100% · As of October 2026

Kläy Haustechnik AG scores 77.7 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.78.924%
  • 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.80.810%
  • 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.70.08%
Kläy Haustechnik AG scores 95.8 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.96.07%
Kläy Haustechnik AG scores 86.7 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).86.722%
Kläy Haustechnik AG scores 35.0 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: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Kläy Haustechnik AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 23 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 23 reviews across all connected sources

Sources
GGoogle4.723
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

November 10, 2023Media
Freitag um 12 Uhr beginnt das Wochenende: Die Kläy Haustechnik AG ist der beste «Lehrbetrieb des Jahres 2023»
solothurnerzeitung.ch

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Comparisons

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Location

Bibernbachstrasse 40
4573 Lohn-Ammannsegg
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-109.814.297
Founded
2003 · 23 years
Last commercial register change
July 13, 2022
Employees
101 to 500
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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