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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,765 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLonayAbtec SA - Building Energy Design
Abtec SA - Building Energy Design Logo
Verified· 3 sourcesTrust Score
Summary

About the company

ABTEC SA is an engineering firm specializing in the planning, consulting and development of projects in the field of building technology. The core activities include the areas of heating, ventilation and air conditioning (HVAC), sanitary engineering, building physics, energy efficiency and renewable energies, as well as building automation and control technology. The company offers services such as project development, consulting, planning and expertise for private and public clients. The activities also include project coordination, analysis of energy parameters and the development of innovative solutions for building technology.

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Products & services

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4.1/5

Abtec SA - Building Energy Design

Technical Consulting & Engineering
✓ Offered7
Building services consulting and studies
Consulting and project development for building energy, design of technical installations, an integrated energy approach, optimisation of investment and operating costs.
Preliminary energy study
Analyses and simulations to guide the project from an energy perspective: selection of the thermal envelope, heating or cooling systems, energy recovery and thermal bridges.
Transformations and renovations
Analysis of energy and building-physics parameters during transformations or renovations, with comprehensive consulting services to guide the project.
Building technical expert opinions
Expert mandates for heating, ventilation–air conditioning, sanitary systems, building physics and thermal comfort.
CVCS project engineering
Services by specialist engineers for heating, ventilation–air conditioning, cold production and distribution, sanitary installations, control and regulation, in partial or complete phases.
Coordination of technical installations
Interdisciplinary coordination of the various technical installations, preparation of technical files for building permit applications and impact studies.
CECB
Preparation of the Cantonal Energy Certificate for Buildings (CECB), including an on-site visit and official classification of energy consumption and CO₂ emissions.
Trust & reputation

ranQ Trust Score of Abtec SA - Building Energy Design: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Abtec SA - Building Energy Design scores 71.3 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.78.124%
  • 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.49.510%
  • 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.78.08%
Abtec SA - Building Energy Design scores 76.6 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.79.212%
  • 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%
Abtec SA - Building Energy Design 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%
Abtec SA - Building Energy Design scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Abtec SA - Building Energy Design reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 6 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 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Route de Préverenges 1
1027 Lonay
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-237.850.100
Founded
2018 · 8 years
Last commercial register change
February 7, 2023
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
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