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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesBrunnenNiederhauser Heizung u. Sanitär AG
Niederhauser Heizung u. Sanitär AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Niederhauser Heizung u. Sanitär AG is the planning, installation, maintenance and repair of heating, ventilation and sanitary systems, including the installation of prefabricated wall systems and sanitary appliances, as well as the performance of service and maintenance work on these systems.

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Products & services

Industry:Plumbing & Building Services
✓ Offered
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4.3/5

Niederhauser Heizung u. Sanitär AG

6
Heating
Heating system installations, planning, installation and maintenance; complete systems in new builds and conversions, refurbishment of heat generation, heat pumps, wood and pellet boilers, solar systems, radiators and floor heating.
Sanitary
Sanitary installations, planning, installation and maintenance; complete installations in new builds and conversions, bathroom renovations in turnkey contracts, water heaters, boiler descaling, water-softening systems and repair service.
Ventilation
Ventilation installations, planning, installation and maintenance; complete systems in new builds and conversions, comfort ventilation, supply and exhaust systems, air dehumidification systems, air-conditioning and repair service.
HLS planning
Planning for heating, ventilation and sanitary; feasibility study, cost estimate, preliminary design, approval process, tendering, detailed design, site supervision and maintenance.
Bathroom renovation / bathroom conversion
Bathroom renovation and bathroom conversion; design and concept, bathroom planning with cost estimate, execution and site management as well as maintenance and upkeep.
Customer service
24h on-call service, boiler descalings, pipe cleaning and filter changes, repairs and maintenance as well as service subscriptions and servicing for heating, ventilation and sanitary systems.
Trust & reputation

ranQ Trust Score of Niederhauser Heizung u. Sanitär AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 100% · As of October 2026

Niederhauser Heizung u. Sanitär AG scores 81.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.78.524%
  • 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.78.610%
  • 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.95.08%
Niederhauser Heizung u. Sanitär AG scores 92.3 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.82.07%
Niederhauser Heizung u. Sanitär AG 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%
Niederhauser Heizung u. Sanitär AG scores 28.6 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 35.57.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Niederhauser Heizung u. Sanitär AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 21 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 21 reviews across all connected sources

Sources
GGoogle4.721
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

April 19, 2026Media
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Knowledge

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Location

Wylenstrasse 3
6440 Brunnen
Opening hours
Mon
07:00 - 11:45, 13:00 - 17:00
Tue
07:00 - 11:45, 13:00 - 17:00
Wed
07:00 - 11:45, 13:00 - 17:00
Thu
07:00 - 11:45, 13:00 - 17:00
Fri
07:00 - 11:45, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.517.240
Founded
1985 · 41 years
Last commercial register change
September 4, 2026
Employees
21 to 50
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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