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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichGrisoni & Partner GmbH
Grisoni & Partner GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Grisoni & Partner GmbH is a planning partner in building services engineering, providing planning, consulting and project support from initial concept through to handover. Their services include sanitary systems, heating, ventilation and air conditioning, refrigeration, sewerage and utility lines, as well as quality management and BIM.

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Products & services

Industry:Technical Consulting & Engineering
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Grisoni & Partner GmbH

✓ Offered12
Client advisory
Support for the client in planning and executing construction projects; clarification of costs, schedules and objectives as well as quality assurance and ongoing scheduling, cost and quality monitoring.
Overall planning HVACSE and building automation
Overall planning of HVACSE as well as building automation with partners; coordination of all trades from a single source for an efficient construction process.
Specialist construction management
Coordination and control of the construction process to implement construction projects in line with plans, budgets and quality standards, on time and successfully.
BIM
Use of Building Information Modeling for 3D analysis and coordination of building services, including the HVACSE layout and early conflict detection.
Operational optimization
Analysis of energy consumption, costs and losses; development of measures to increase energy efficiency and support with implementation, funding and compliance with regulations.
Ventilation & air-conditioning engineering
Planning of ventilation systems for new builds and renovations; from decentralised systems to central ventilation units, tailored to different residential and working spaces.
Heating engineering
Planning and implementation of heating engineering for new builds, conversions and renovations; with a focus on renewable energy, heat pumps and energy-efficient heat distribution.
Sanitary engineering
Planning, installation and maintenance of sanitary systems in buildings; water supply, wastewater disposal and sanitary fixtures, as well as integration into the architectural design of the rooms.
Refrigeration engineering
Creation of system concepts for refrigeration engineering applications; energy-efficient, safe solutions for reliable cooling supply with high comfort.
Sewerage & utility lines
Planning and installation of sewerage systems and utility lines for wastewater; creation of plans in accordance with Swiss standards and consultation on local requirements.
Spatial & technical coordination
Planning and coordination of the spatial arrangement of structural components and technical systems to avoid collisions and ensure the interaction of the trades.
Quality management (QM)
Monitoring and documentation of processes and results to ensure quality standards; early identification and rectification of deviations and weaknesses.
Trust & reputation

ranQ Trust Score of Grisoni & Partner GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Grisoni & Partner GmbH scores 60.4 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.27.910%
  • 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%
Grisoni & Partner GmbH scores 86.7 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.100.012%
  • 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.70.07%
Grisoni & Partner 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%
Grisoni & Partner GmbH scores 5.1 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 35.5.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Grisoni & Partner GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Riedhofstrasse 354
8049 Zurich
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-112.648.065
Founded
2005 · 21 years
Last commercial register change
April 13, 2026
Employees
11 to 20
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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