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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSolar & PhotovoltaicsMülligenMarra Haustechnik GmbH
Marra Haustechnik GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Marra Haustechnik GmbH is the planning, installation, maintenance and repair of building technology systems, particularly in the areas of: Sanitary technology, Heating technology (including heat pumps, gas heating, oil heating, wood heating and ice storage), Ventilation technology (including comfort ventilation and exhaust systems), Alternative energies (including solar thermal energy), and Renovation and conversion of building technology installations. The company offers these services to both private households and large-scale properties.

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Products & services

Industry:Solar & Photovoltaics
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4.1/5

Marra Haustechnik GmbH

6
Heating
Heat pumps, gas heating, oil heating, wood heating and ice storage; advice, planning, installation, commissioning, heating system modernization as well as heating service.
Plumbing installations
Water supply, water treatment, hot water preparation and wastewater disposal; plumbing installations from initial installation to renovation for residential and commercial properties.
Ventilation
Comfort ventilation and flue system; planning, installation, retrofit and maintenance of ventilation systems for buildings.
Solar thermal
Solar thermal systems for hot water preparation and heating support; advice, planning, installation and commissioning for new builds, renovations or retrofits.
Renovation & conversion
Renewal and remodelling of heating, ventilation and sanitary systems; modernization of outdated building services, bathroom renovations and coordinated conversions.
Maintenance work
Maintenance of heating, ventilation and plumbing; burner cleaning, checks of pressure and control, filter changes, ventilation cleaning, boiler maintenance and descaling.
Trust & reputation

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

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Marra 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.
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%
Marra Haustechnik GmbH scores 80.9 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.95.212%
  • 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%
Marra 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.
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%
Marra Haustechnik GmbH scores 6.6 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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Marra 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

Birrfeldstrasse 9a
5243 Mülligen
Opening hours
Mon
08:00 - 16:30
Tue
08:00 - 16:30
Wed
08:00 - 16:30
Thu
08:00 - 16:30
Fri
08:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-467.732.794
Founded
2013 · 13 years
Last commercial register change
September 22, 2020
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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