• Overview

• Device Certification

• Professional Certification

• System Integrator

• Annual LonMark Awards


The number of applications for LonMark certification is growing rapidly. To make sure your products are on-track for certification, design conformance into them by following the LonMark Interoperability Guidelines v3.4.

see Device Certification

The Proficiency Testing Program for Qualified Open Systems Installers, Professionals and Integrators provides a worldwide standard of proficiency for individuals that install, integrate and maintain systems utilizing LonMark certified products.

see Professional Certification

  Certification Resources

Professional Certifications

Frequently Asked Questions

Global Test Centers

Test Registration & Schedules

Additional Resources

LonMark Certified System Integrator (LM-CSI) Listing

Certified System Integrator Program

LONMARK’s Professional Certification Program—comprised of the Certified Professional and Certified System Integrators—has provided a comprehensive professional education and testing program for manufacturers, integrators, and end users involved in the design, specification, integration, installation, or maintenance of LONMARK control networks.

The following organisations are leading the worldwide movement toward professionally integrated facilities; proving their abilities through becoming a LONMARK Certified System Integration company:


LonMark Certified System Integrator
Office Location
LonMark International Parent Member
Bauer Elektrounternehmen GmbH & Co. KG EU, Germany, Buchbach Bauer Elektrounternehmen GmbH & Co.KG  
Boos Klima und Kälte GmbH EU, Germany, Varel Boos Klima und Kaelte GmbH  
Convergint Technologies, Ltd. Canada, Calgary, Alberta Convergint Technologies, Ltd.  
ENE Systems US, MA, Canton ENE Systems, Inc.  
HGI – Heger Gebäudeautomation Ing. GmbH EU, Germany, Hörstel HGI mbH  
Hermos Systems GmbH EU, Germany, Mistelgau HERMOS Systems GmbH  
Kenmark Controls US, CA, San Francisco Kenmark Real Estate Group, Inc.  
Kieback&Peter GmbH & Co. KG EU, Germany, Berlin Kieback&Peter GmbH & Co. KG  
LG CNS Co., Ltd. Asia/Pacific, Korea, Seoul LG CNS Co., Ltd.  
PentaControl AG EU, Switzerland, Beringen PentaControl AG  
Schneider Electric Buildings Germany GmbH EU, Germany, Oberhausen Schneider Electric  


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