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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSt. GallenZüst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen
Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen is an engineering office for building services providing planning and consultancy for heating, ventilation, sanitary, refrigeration and energy, including energy assessments (GEAK). It supports new-build and renovation projects across residential, commercial and industrial building types.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered5
Heating
Planning and optimisation of heating systems for residential, commercial and industrial buildings, from heat pumps and pellet boilers to energy certificates, Minergie certifications and subsidy applications.
Ventilation
Planning and realisation of ventilation systems for industrial, commercial, residential and special buildings, including comfort ventilation, air treatment, calculations, approvals, implementation and functional testing.
Sanitary
Planning of sanitary installations for residential, commercial and industrial buildings, from concept development and design through tendering to invoicing, including water, gas and compressed-air systems.
Refrigeration
Planning and optimisation of refrigeration systems for buildings, from process cooling and chilled air conditioning to cooling ceilings, including concepts, calculations, approvals, tenders and specialist construction management.
Energy
Energy studies, energy certificates as well as GEAK and GEAK+ reports, including current-state assessment, comparison of variants, economic viability calculations and support with grant funding.
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Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen

Trust & reputation

ranQ Trust Score of Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen: 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.

Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen 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%
Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen scores 67.6 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.70.212%
  • 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%
Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen 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%
Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Züst Ingenieurbüro Haustechnik AG Zweigniederlassung St. Gallen 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

Bionstrasse 4
9015 St. Gallen
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 - 15:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-380.826.942
Founded
2020 · 6 years
Last commercial register change
September 2, 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.76.06%
  • 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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