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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesLiesbergJaun Haustechnik GmbH
Jaun Haustechnik GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Jaun Haustechnik GmbH is a trades company specializing in sanitary, heating and ventilation systems, providing planning, installation and maintenance services. Offerings include new-build and renovation plumbing, repairs, water softening systems, bathroom projects (including bidet-toilet systems and specialist taps), heating systems (gas, oil, solid-fuel boilers and heat pumps) and ongoing service and emergency support; the company is a certified installer under the Wärmepumpen-System-Modul.

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Offering

Products & services

Industry:Plumbing & Building Services
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4.0/5

Jaun Haustechnik GmbH

✓ Offered
8
Sanitary installations
Sanitary installations for new builds and conversions, repairs, rainwater systems, LPG installations, water softening systems and maintenance of pipes and equipment.
Heating systems
Heating systems for gas, oil and solid-fuel boilers, heat-pump heating systems, LPG installations, hot water storage tanks, heat-pump boilers, and installation of heating and air-conditioning systems.
Heat pumps
Heat-pump heating systems with air-to-water heat pumps, indoor or outdoor installation, including planning and handling of the approval procedure.
Floor heating
Cleaning and flushing of floor heating systems, mechanical cleaning of the pipework and restoration of efficiency in contaminated or sludge-filled systems.
Bathroom and wellness projects
Bathroom and wellness projects with complete coordination, including shower toilets, fittings, Quooker installations and special, basin and stainless-steel fittings.
Boiler maintenance
Maintenance of boilers with descaling, replacement of the sacrificial anode and chemical descaling for hygiene, energy efficiency and longer service life.
Maintenance and service for building services
Maintenance, service and repairs for heating systems, solar installations, radiator valves, circulation pumps, pipe insulation, water filters and pipes.
Water softening
Installation of descaling and water softening systems, as well as determining water hardness and servicing water filters.
Trust & reputation

ranQ Trust Score of Jaun Haustechnik GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Jaun Haustechnik GmbH scores 60.4 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.63.324%
  • 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.45.610%
  • 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.70.08%
Jaun Haustechnik GmbH scores 83.0 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%
Jaun Haustechnik GmbH scores 83.3 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).83.322%
Jaun Haustechnik GmbH scores 9.1 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 35.9.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Jaun Haustechnik GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.2 out of 5 stars from 5 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
4.2
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.25
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Birsweg 12
4253 Liesberg
Opening hours
Mon
08:00 - 19:00
Tue
08:00 - 19:00
Wed
08:00 - 19:00
Thu
08:00 - 19:00
Fri
08:00 - 19:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-300.570.084
Founded
2011 · 15 years
Last commercial register change
January 4, 2012
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.
88.0
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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