ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMosenDiadem AG
Diadem AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Diadem AG designs and supplies thermal-engineering equipment and systems, with a focus on heat exchangers (plate, shell-and-tube, double-pipe, finned-tube), cooling systems and special pressure vessels. The company provides engineering, thermal design, production documentation, manufacturing supervision and quality assurance, and coordinates production with external manufacturers for power plants, industrial processes, wastewater and compressor applications.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
No score yet

Diadem AG

✓ Offered
7
Heat exchangers
Heat exchangers for thermal engineering applications, including cushion plate, single-tube, double-tube, tube bundle, flue gas, high-pressure finned tube and wastewater heat exchangers.
Heat recovery systems
Heat recovery systems and optimisation of existing combined cooling and heating networks, including replacement of outdated cooling-water systems and integration of pumps, filters and monitoring components.
Engineering and design of heat exchangers
Engineering, development and technical design of finned and non-finned cross-flow, tube bundle and cushion plate heat exchangers, including feasibility and risk assessment.
Mechanical calculations and validations
Mechanical calculations in accordance with AD2000 and the Pressure Equipment Directive 97/23/EC, as well as recalculations for different operating conditions of heat exchangers.
Manufacturing documentation and production support
Creation of manufacturing drawings, bills of materials and documentation for design review, along with production support and quality assurance during manufacturing.
Special pressure vessels
Special pressure vessels for cryogenics, textile finishing and piston compressors, including high-pressure vessels, helium-tight vessels, pulsation dampers, liquid separators and steam conditioners.
Order management and outsourcing of equipment and systems
Order processing and outsourcing of customised thermal engineering equipment and systems, including delivery of the manufactured equipment and systems.
Trust & reputation

ranQ Trust Score of Diadem AG

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

Diadem AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Diadem AG scores 85.5 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.55.07%
Diadem AG scores 83.3 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).83.322%
Diadem AG 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%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

Knowledge

No knowledge articles yet

Once Diadem AG has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Diadem AG in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Diadem AG by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Diadem AG to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Rütimattstrasse 14
6295 Mosen

At a glance

Legal form
Corporation
UID
CHE-108.381.350
Founded
1995 · 31 years
Last commercial register change
May 18, 2021
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

    Similar companies

    JL
    Jenni Lüftungen AG
    Ruswil
    BA
    Bex Air GmbH
    Nottwil
    TT
    tib Technik im Bau AG
    Lucerne
    FS
    Frenger System GmbH
    Schüpfheim
    JB
    Josef Bösch GmbH
    Weggis
    SA
    SWEGON AG
    Lucerne
    LM
    LKS Montagen AG
    Emmenbrücke
    FK
    Flüma Klima AG
    Ebikon