Visit our References page to discover how over 6,400 customers in more than 70 countries—from small and medium-sized businesses to global corporations—are benefiting from the efficient system solutions offered by ONI-Wärmetrafo GmbH. Learn about a selection of international partners and projects that have increased their efficiency and sustainably reduced energy costs using modern energy and process technology. Immerse yourself in real success stories from industry, plastics processing, and more—strong evidence of reliability and performance worldwide.
Bernhard Gell | Project Manager | HILTI
“For over 20 years, ONI has been responsible for the installation and technical support of refrigeration systems at Hilti Kunststofftechnik GmbH. During this time, our experience working with them has been entirely positive, both in terms of their consulting services and the quality of their work and technical support.”
Kunststoff- und Elektrotechnik GmbH
Kunststoff- und Elektrotechnik GmbH uses refrigeration systems from Oni-Wärmetrafo GmbH at its production site in Mönchweiler.
Melanie Lehmann | Oskar Lehmann, LLC
"We are very pleased that we chose an ONI system and look forward to continuing this excellent partnership. We still have a few projects to tackle here at our company, and we are delighted to have ONI as a partner by our side."
Andreas Ernst | Roth Kunststoff AG
“Your team did a truly outstanding job at our factory. I was also impressed by how smoothly the system was commissioned and how flawlessly the entire system was programmed. The system continues to operate to our complete satisfaction. Thank you all very much for your great effort.”
