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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringRoot D4Plantec HLKS GmbH
Plantec HLKS GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Plantec HLKS GmbH is the planning and technical management of building technology systems, particularly in the areas of heating, ventilation, air conditioning and sanitation, as well as energy consulting for new construction and renovation projects.

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Products & services

Industry:Technical Consulting & Engineering
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4.1/5

Plantec HLKS GmbH

Construction & Project Management
✓ Offered10
Building services engineering design
Building services engineering design for heating, ventilation, air conditioning, sanitary and electrical systems; consulting, planning and implementation for new builds and renovations, including specialist construction-site management and HLKSE coordination.
Specialist construction-site management
Specialist construction-site management for HLKSE projects, including coordination of trades, scheduling coordination, acceptance inspections according to SIA, and support during execution, commissioning and completion.
Energy consulting
Energy consulting for new builds and conversions with analysis of energy consumption, building services and building envelope; advice on efficiency, replacing heat generation, subsidies and renewable energies.
Minergie certification
Minergie certification for buildings with Minergie Standard, Minergie-P, Minergie-A, ECO, MQS Bau, airtightness concept and building services concept.
Energy performance documents according to SIA 380/1
Energy performance documents according to SIA 380/1, including system documentation, component-by-component documentation, U-value calculation, thermal bridges, official EN forms, and building plans with components.
GEAK+
GEAK+ energy certificate with energetic building analysis, comparison of options, thermal properties, energy and maintenance costs, investment costs and energy-efficiency class.
Impact consulting «erneuerbar heizen»
Free impact consulting for replacing heating systems in single- and multi-family houses up to six residential units; heating system comparison, subsidies, checklist and cost-effectiveness assessment.
Subsidy consulting and administration
Consulting on subsidies for renovations as well as application and administration of cantonal funding contributions, in particular for thermal insulation, heat pumps, wood-fired heating systems, district heating and solar thermal collectors.
Energy planning
Energy planning for the building envelope and building services, including strategic planning, investment costs, tender submission, scheduling coordination and support during execution.
Specialist planning
Specialist planning for central vacuum systems, thermal solar systems, photovoltaic systems and fire protection specialist design.
Trust & reputation

ranQ Trust Score of Plantec HLKS GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Plantec HLKS GmbH scores 76.9 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.71.224%
  • 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.72.110%
  • 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.100.08%
Plantec HLKS GmbH scores 67.8 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.64.612%
  • 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%
Plantec HLKS GmbH 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%
Plantec HLKS GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Plantec HLKS GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 16 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
4.5
of 5

Aggregated from 16 reviews across all connected sources

Sources
GGoogle4.516
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Platz 3
6039 Root D4
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
08:00 - 12:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-195.452.915
Founded
2021 · 5 years
Last commercial register change
December 15, 2025
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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