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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint744,823 companies indexed · Last updated: today
DirectoryIT & CommunicationSoftware DevelopmentArlesheim4-check AG
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4-check AG

Summary

About the company

4-check AG carries out hygiene inspections and technical air‑handling checks according to VDI 6022 and SWKI/VA 104, including measurements and microbiological laboratory analyses via partner labs. The company also provides digital VDI 6022 training (categories A and B) and engineering consulting for the operation and maintenance of HVAC systems. Inspection results and documentation are delivered in digital formats.

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Hygiene inspections
Hygiene inspections according to VDI 6022 and SWKI VA 104 for air handling unit (RLT) systems; preliminary discussion, on-site inspection, measurement-based testing, laboratory investigations, evaluation, report, and repeat inspections.
Training courses
Digital hygiene training courses VDI 6022 for categories A and B, including an online learning platform, final exam, certificate, downloads, as well as refresher and multilingual training.
Engineering consulting
Engineering consulting for sustainable, CO₂-neutral and digitised projects; design sprints, rapid prototyping, plant and real-estate analysis, master plans, and modernisation of facility-management concepts.

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Location

Bodenweg 12
4144 Arlesheim
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 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-254.185.120
Founded
2017 · 9 years
Last commercial register change
August 5, 2026
Employees
1 to 10

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