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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesNiederhasliHaustechnik W&WZ GmbH
Haustechnik W&WZ GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Haustechnik W&WZ GmbH provides sanitary and heating installation, system planning and maintenance services for buildings. Its offerings include installation and repairs, preventive maintenance and a 24/7 emergency service, as well as water treatment systems and heating system modernization.

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Offering

Products & services

Industry:Plumbing & Building Services
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3.6/5

Haustechnik W&WZ GmbH

✓ Offered
5
Planning
Advisory services, cost estimates, system optimisation and detailed execution planning for new builds, renovations and refurbishments in the area of sanitary installations and heating.
Sanitary
Bathroom and WC refurbishments, burst-pipe service, boiler descaling as well as water-softening, pressure-boosting and sewage lifting systems.
Heating
Installation of central heating systems, underfloor heating, heating maintenance and service, replacement of heating boilers, and energy-efficient modernisation and optimisation.
Service & Maintenance
Replacing water filters, burst-pipe service, boiler descaling, bleeding radiators, connection of washing machines, as well as fault diagnosis and repairs.
24h Service
Sanitary and heating emergency service available 24/7 for burst water pipes, heating faults and water damage; also for smaller repairs and maintenance.
Trust & reputation

ranQ Trust Score of Haustechnik W&WZ GmbH: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 54% · As of October 2026

Haustechnik W&WZ GmbH 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.
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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%
Haustechnik W&WZ GmbH scores 50.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.25.012%
  • 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%
Haustechnik W&WZ 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%
Haustechnik W&WZ GmbH scores 0.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Haustechnik W&WZ GmbH reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». 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 October 2026.

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

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Location

Langackerweg 5
8155 Niederhasli

At a glance

Legal form
Limited Liability Company
UID
CHE-244.066.229
Founded
2025 · 1 year
Last commercial register change
January 16, 2026
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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