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

About the company

Viamala Haustechnik GmbH is a building‑services company for sanitary, heating and ventilation systems that provides installation, maintenance and repair services. The firm offers system advice, works on new builds and renovations, handles damage remediation and coordinates with partner trades, and advertises a 24‑hour emergency service.

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Products & services

Industry:Plumbing & Building Services
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4.1/5

Viamala Haustechnik GmbH

3
Sanitary installations and sanitary repairs
Assembly and installation of sanitary systems in new builds and conversions; maintenance, repairs of fittings, cleaning of siphons and drains, descaling of boilers, filter replacement and water-damage restoration.
Heating installation and heating system renovation
Installation of new heating systems and renovation of existing units; advice on oil, gas, electric and wood systems, as well as heat pumps and solar energy for domestic hot water and heating support.
Ventilation and air-conditioning systems
Consulting, installation, servicing and maintenance of ventilation and air-conditioning systems in conversions and new builds, industry, commercial properties, as well as hotels and the hospitality industry.
Trust & reputation

ranQ Trust Score of Viamala Haustechnik GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Viamala Haustechnik GmbH scores 70.2 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.70.824%
  • 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.68.910%
  • 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%
Viamala Haustechnik GmbH scores 78.8 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.86.512%
  • 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%
Viamala Haustechnik GmbH 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%
Viamala Haustechnik GmbH scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Viamala Haustechnik GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 14 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
4.5
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.514
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Neudorfstrasse 23
7430 Thusis
Opening hours
Mon
08:00 - 11:30, 13:00 - 17:00
Tue
08:00 - 11:30, 13:00 - 17:00
Wed
08:00 - 11:30, 13:00 - 17:00
Thu
08:00 - 11:30, 13:00 - 17:00
Fri
08:00 - 11:30, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-444.587.297
Founded
2016 · 10 years
Last commercial register change
June 30, 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.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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