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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSchlierenSynplan AG
Synplan AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Synplan AG is an engineering firm for building services that provides project planning and design for heating, ventilation, sanitary and sprinkler systems as well as sewer planning. The company also offers consulting, feasibility studies and coordination services for building-services trades across project phases.

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Offering

Products & services

Industry:Technical Consulting & EngineeringConstruction & Project Management
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3.8/5

Synplan AG

✓ Offered9
Building services engineering design
Building services engineering design for residential buildings, industrial facilities and complex projects; concept, design, execution and commissioning, taking into account technology, cost efficiency and sustainability.
Heating system design
Heating system design for various heating systems; selection of the appropriate system, design, and support up to commissioning while complying with energy requirements.
Ventilation planning
Ventilation planning for buildings; consultation, design and support up to commissioning and acceptance for suitable ventilation solutions.
Sanitary and sprinkler design
Sanitary and sprinkler design for residential construction and industrial projects; concept, implementation, functional, standards-compliant and safe solutions.
Sewerage and drainage planning
Sewerage and drainage planning including clarifications with authorities, submission and execution planning for a coherent drainage concept.
Coordination of HLKKSE trades
Coordination of the HLKKSE building services trades with cross-trade coordination to ensure clear processes and efficient implementation on site.
Consulting, expert reports and feasibility studies
Sound consulting, expert reports and feasibility studies for all areas of building services engineering, independent, neutral and solution-oriented.
Specialist site supervision for sanitary/sprinkler
Specialist site supervision for sanitary and sprinkler systems in construction projects, with project support during implementation.
Heating and cooling planning
Heating and cooling planning for construction projects, including planning in the later project phases.
Trust & reputation

ranQ Trust Score of Synplan AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Synplan AG scores 59.7 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.73.124%
  • 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.35.310%
  • 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.50.08%
Synplan AG scores 67.5 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.58.012%
  • 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%
Synplan AG 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%
Synplan AG scores 20.0 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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Synplan AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Zürcherstrasse 133
8952 Schlieren
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-254.039.116
Founded
2022 · 4 years
Last commercial register change
March 14, 2022
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.
100.0
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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