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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringBaarOlos AG
Olos AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of OLOS AG is the planning and implementation of projects in the field of technical building equipment, particularly in the areas of heating, ventilation, air conditioning, sanitation, fire protection, smoke extraction, minerals and energy. The company offers comprehensive services for the planning and realization of projects in these areas.

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Products & services

Industry:Technical Consulting & Engineering
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Olos AG

✓ Offered11
Building services planning
Complete building services planning for heating, ventilation, air conditioning, sanitary, fire protection, smoke extraction, Minergie, energy, GEAK and expertise.
Heating
Design of thermal systems, including heat pump systems, solar energy use for domestic hot water, solid-fuel heating systems, combined heat and power plants and special systems.
Ventilation
Design of air-handling systems, from controlled residential ventilation to ventilation for indoor air systems, laboratory ventilation systems, cleanrooms, process air technology and swimming pool ventilation.
Air conditioning
Design of climate and refrigeration systems, including air-conditioning refrigeration systems, IT cooling, process cooling and various cooling systems such as cooling ceilings and TABS.
Sanitary systems
Design of sanitary systems for different building types, water treatment, domestic hot water preparation, wastewater and sewer systems, retention and infiltration systems, and special installations.
Fire protection
Preparation of fire protection concepts and fire protection measures, including structural, technical, defensive and organisational fire protection, with support through to official approval.
Smoke extraction
Design of smoke and heat treatment systems, in particular smoke and heat exhaust systems, smoke protection pressure systems and purge ventilation systems.
Minergie
Advice on the Minergie building standard and preparation of documentation for the certification of projects according to Minergie A, P or ECO.
Energy consulting
Selection of the heating system, advice on insulation thicknesses, energy concepts, thermal building simulations, energy and operational optimisations, as well as consulting and expert reports.
GEAK consulting
GEAK consulting for assessing the energy-related quality of buildings, as well as support with initial optimisation steps and renovation measures for building services.
Expertise
Neutral expert reports in the field of building services, analyses of HLKS and MSR concepts, building analyses and defect management.
Trust & reputation

ranQ Trust Score of Olos AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 100% · As of October 2026

Olos AG scores 66.1 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.73.324%
  • 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.45.610%
  • 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%
Olos AG scores 92.3 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.82.07%
Olos AG scores 86.7 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).86.722%
Olos AG scores 6.6 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 35.13.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Olos AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.8 out of 5 stars from 5 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.8
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.85
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

October 20, 2016Media
Mehr als die Summe der Teile Systemtrennung – ein Sonderfall
espazium.ch

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Location

Hier entsteht die Karte
Mühlegasse 18E
6340 Baar

At a glance

Legal form
Corporation
UID
CHE-104.025.241
Founded
1998 · 28 years
Last commercial register change
July 23, 2024
Employees
21 to 50
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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