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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesGrellingenASA Haustechnik GmbH
ASA Haustechnik GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of ASA Haustechnik includes the planning, installation, maintenance and servicing of building technology systems, including: heating and heat pumps, sanitary and piping engineering, refrigeration and air conditioning technology. The company offers comprehensive services for private and commercial customers, from consulting and planning to execution and maintenance of building technology systems.

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Offering

Products & services

Industry:Plumbing & Building Services
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4.1/5

ASA Haustechnik GmbH

✓ Offered4
Heating
Advice, planning, installation, maintenance, repair and modernization of heating systems and heat pumps for residential and commercial buildings.
Sanitary
Planning, installation and maintenance of modern sanitary installations for residential homes and commercial properties, including efficient and tailored solutions.
Cooling and ventilation
Advice, planning, assembly, installation, maintenance, repairs and replacement of ventilation, air-conditioning and cooling systems for residential, office and industrial buildings.
Pipework construction
Planning, installation, maintenance, upkeep, repairs and replacement of drinking water, wastewater and heating pipes for buildings.
Trust & reputation

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

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

ASA Haustechnik 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%
ASA Haustechnik GmbH scores 79.8 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.92.512%
  • 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%
ASA Haustechnik 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%
ASA Haustechnik GmbH scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ASA Haustechnik GmbH 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 October 2026.

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

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Location

Nenzlingerweg 1
4203 Grellingen

At a glance

Legal form
Limited Liability Company
UID
CHE-204.888.395
Founded
2014 · 12 years
Last commercial register change
August 8, 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.70.03%
    • Full methodology

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