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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberZermattRichard Gruber AG
Richard Gruber AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Richard Gruber AG provides plumbing and sheet-metal work. Its services include installations for new buildings and renovations, bathroom and kitchen refurbishments, maintenance and repairs, roofing, metal roofs, roof windows and fall-protection systems.

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Service area

Offering

Products & services

Industry:Plumber
✓ Offered10
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Richard Gruber AG

Plumbing installations for new builds
Professional installation of water and wastewater lines, bathroom and kitchen connections, as well as fittings, showers, bathtubs, WC systems, and boiler connections.
Plumbing alterations and renovations
Conversion and renovation of bathrooms, wet rooms and kitchens, including consultation and planning, replacement of old pipework, barrier-free solutions, and conversion of connections.
Plumbing service work
Repairs, maintenance and smaller installation work, for example for dripping taps, WC flush systems, fittings, defective sanitary components and domestic hot-water boilers.
Classic sheet-metal work
Installation and replacement of gutters and downspouts, cladding and connections to the roof, chimney and façade, as well as protection against moisture and weather.
Sheet-metal work for new builds and renovations
Sheet-metal work on new builds and existing buildings, including roof and façade connections, replacement of old metal cladding, and professional sealing during renovations.
Metal roofs and Prefa roof coverings
Metal roofs, double lock-seam roofs and Prefa roof coverings for new builds and existing houses, including integration of PV systems.
Roof windows
Planning and installation of new roof windows, replacing old windows with energy-efficient models, and adapting the connections to ensure watertightness.
Fall protection systems
Permanent fall protection systems for roofs, anchor points and securing systems for roof work in line with current safety standards.
General roofing work
Repairs and adjustments to existing roofs, sealing against wind and weather, roof repairs and snow removal from the roof.
General flat roofing work
Sealing of flat roofs, renovation and maintenance, as well as thermal insulation and renewal of the roofing surface.
Trust & reputation

ranQ Trust Score of Richard Gruber AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Richard Gruber AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Richard Gruber AG 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%
Richard Gruber 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%
Richard Gruber AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Richard Gruber AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of November 2026.

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

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Location

Flecksteinweg 20
3920 Zermatt

At a glance

Legal form
Corporation
UID
CHE-112.780.204
Founded
2006 · 20 years
Last commercial register change
February 1, 2018
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • VSZermatt
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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