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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesZillisMartin Riedhauser AG Sanitär & Heizung
Martin Riedhauser AG Sanitär & Heizung Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Martin Riedhauser AG is the provision of services in the field of sanitation and heating. This includes the installation, maintenance and repair of sanitary facilities and heating systems, as well as the implementation of environmentally friendly concepts and the use of modern, energy-saving devices.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Heating refurbishments and new installations
Consulting, planning and implementation of heating refurbishments and new installations with heat pumps, wood, solar, oil and gas heating systems, underfloor heating systems and heat recovery.
Sanitary installations and bathroom renovations
Sanitary installations for the bathroom area with toilets, washbasins, shower cubicles, bathtubs, whirlpools, taps, mirror cabinets and furniture.
Boiler service and appliance connections
Installation and service of instantaneous water heaters, gas appliances and electric boilers, as well as connection of dishwashers, washing machines and tumble dryers.
Descaling and drain clearing
Descaling and drain clearing as supplementary sanitary services for pipework, fittings and installations.
Building services maintenance and inspections
Building services maintenance tasks, inspections, as well as measurements and evaluations for heating systems and other technical installations.
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3.8/5

Martin Riedhauser AG Sanitär & Heizung

Trust & reputation

ranQ Trust Score of Martin Riedhauser AG Sanitär & Heizung: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Martin Riedhauser AG Sanitär & Heizung scores 50.9 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.50.024%
  • 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.17.610%
  • 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%
Martin Riedhauser AG Sanitär & Heizung scores 85.5 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%
Martin Riedhauser AG Sanitär & Heizung 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%
Martin Riedhauser AG Sanitär & Heizung scores 4.3 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 35.4.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Martin Riedhauser AG Sanitär & Heizung reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 1.0 out of 5 stars from 1 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
1
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle11
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Suletschas 3
7432 Zillis
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 16:45
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-389.322.085
Founded
2011 · 15 years
Last commercial register change
November 16, 2023
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.100.06%
  • 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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