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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesLe Mont-Sur-LausanneJakob Forrer SA
Jakob Forrer SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Jakob Forrer SA is an engineering consultancy for building services that provides design and consulting services in heating, ventilation, air conditioning and sustainable energy.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered8
HVAC planning
Comprehensive planning of building services for air and energy installations, from concept to delivery, for office, cultural, commercial and industrial buildings.
Sanitary studies
Sanitary studies carried out with specialist partners, integrated into building services projects according to the requirements of the commission.
Electrical studies
Electrical studies carried out with competent partners, as part of overall building services planning.
Design of sustainable energy installations
Design and development of tailor-made installations matched to clients’ real needs, with reduced resource use and the search for optimised solutions.
Sanitation and renovation of technical installations
Sanitisation, renovation and replacement of heating, heat production and cooling installations in existing buildings.
Heat production
Studies and implementation of heat production solutions, in particular wood, pellet and gas boilers and heat pumps.
Cooling production
Planning of installations for chilled water production, with dry coolers and integration into building services systems.
Projects for office and commercial buildings
HVAC planning for offices, administrative buildings, training rooms, lecture halls, shops and research centres.
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3.6/5

Jakob Forrer SA

Trust & reputation

ranQ Trust Score of Jakob Forrer SA: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

x

Data basis 96% · As of October 2026

Jakob Forrer SA scores 56.8 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.35.08%
Jakob Forrer SA scores 53.4 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.25.012%
  • 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%
Jakob Forrer SA scores 83.3 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).83.322%
Jakob Forrer SA scores 31.4 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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Jakob Forrer SA reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». 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.

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Location

Chemin du Rionzi 54
1052 Le Mont-Sur-Lausanne

At a glance

Legal form
Corporation
UID
CHE-105.810.366
Founded
2025 · 1 year
Last commercial register change
January 22, 2026
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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