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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesJonaW+L Partner AG
W+L Partner AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The company's core activity is the planning of energy and building technology.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered10
Building services planning
Planning of heating, ventilation/cooling/air-conditioning systems, sanitary and solar systems, as well as precise coordination of pipes and ducts in the building.
Consulting
Advice on energy and building services, comparison of systems, manufacturers and eco standards, and support for project decisions and cost matters.
Energy consulting
Analysis of energy consumption, assessment of the building envelope’s condition and weak points, comparison of different systems, manufacturers and eco standards as a basis for decisions.
Concepts
Development of needs clarification, visual concept presentation, decision-making basis for energy-related and building-services matters, as well as cost information for refurbishments and new builds.
Owner advisory / expert reports
Advice on energy generation, handling existing systems, replacement of heat generators, replacement of components, and energy and consumption optimisations with cost-benefit evaluation.
Heating system planning
Planning of heating systems with a comparison of conventional and alternative systems, including heat pumps, wood-fired heating and solar collectors.
Ventilation, cooling and air-conditioning planning
Planning of comfort ventilation, air-conditioning systems and humidification and dehumidification solutions for residential, office and other building types.
Plumbing planning
Planning of sanitary installations for drinking water, disposal, sound insulation, retention, infiltration and rainwater use.
Sewer system planning
Planning of site drainage, including wastewater, rainwater, use, infiltration and retention.
Coordination – BIM
Spatial and time coordination of all services in the planning process with BIM, aligned to schedules, budget and the installation sequence.
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4.2/5

W+L Partner AG

Trust & reputation

ranQ Trust Score of W+L Partner AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of October 2026

W+L Partner AG scores 66.9 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.75.024%
  • 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.61.010%
  • 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%
W+L Partner AG scores 93.9 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%
W+L Partner 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%
W+L Partner AG scores 28.6 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 35.57.14%
  • 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

W+L Partner AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 10 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.710
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

October 28, 2024Media
Gold und Bronze an SwissSkills
linth24.ch

Knowledge

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Location

Eichwiesstrasse 18b
8645 Jona
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-108.751.872
Founded
2006 · 20 years
Last commercial register change
June 8, 2026
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.85.03%
    • Full methodology

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