Chinaplas 2024German Exhibitors ONI-Wärmetrafo GmbH
ONI-Wärmetrafo GmbH

ONI-Wärmetrafo GmbH

Booth number: HALL 2.1-H45

About us

Customers in more than 70 countries around the world rely on our energy-saving and reliable plants and systems. From consulting and planning to turnkey plant construction and downstream service, we offer our customers all services from a single source. The range of products and systems today ranges from the small chiller to the large industrial plant in the areas of cooling and refrigeration technology, heat recovery, air conditioning, ventilation and clean room technology, compressed air supply, energy optimization for machines, water treatment and tool temperature control. The circle of satisfied customers ranges from small and medium-sized companies to global corporations. We owe our company's success to a constantly growing customer base that successfully reduces energy and production costs with our systems and thus improves its competitiveness. Our unique system know-how, the comprehensive range of products and services, as well as our outstanding corporate performance and innovative power have contributed to our inclusion in the lexicon of German world market leaders.

In addition, we were included by German Standards in the publication "BEST OF GERMAN INDUSTRY", which was published by the Zeit publishing group in December 2023.

Final assembly phase of a container cooling and compressed air system with heat recovery

Particularly energy-efficient cooling system for a plastics processor with heat recovery

Highly efficient, modular cooling water energy center with heat recovery and industrial heat pump

View of an energy-efficient, modular cooling water energy center with a heat recovery system

ONI Group with three locations in Lindlar and Großröhrsdorf in Germany and Kunshan in China

Modular energy centers for efficient cooling water supply for a plastics processing company

Multi-circuit temperature control system for process optimization in the injection molding process


ONI-Wärmetrafo GmbH
Niederhabbach 17
51789 Lindlar

Phone:  +49 2266 47480
ONI Energy saving technology (Kunshan) Co., Ltd.
No.329, Jujin Rd, Zhang Pu
215321 Kunshan City, Jiangsu
P. R. China

Phone:  +86 512 3662-5112

Contact person:

Guido Hamm
Area Sales Manager Asia Pacific
Phone: +49 171 4455387

Products & Services

Our service portfolio ranges from project consultation to expert planning and engineering all the way to construction and installation as well as after-sales services.

Our range of products

Cooling/chilling systems
Heat recovery
Air conditioning/
ventilation systems
Clean-room technology
Rental chilling systems
Compact chillers
Dry-type coolers
Modular energy center
Temperature control systems
Power optimization
Water treatment
Compressedair supply
Project engineering

Cooling/chilling systems

Energy-optimized cooling system for feeding production machines as well as air-conditioning and ventilation systems. With heat recovery for using costfree waste heat and a non-glycol winter relief for reducing the power consumption of chillers.
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Part of a highly efficient cooling energy center with heat recovery and heat exchanger station

Modular energy centers

The demand for modular energy centers has considerably increased during the recent years. The reasons for this development may surely be a quick availability, flexibility and the space-saving design of these powerful ONI systems. From the supply of cooling water to heating power and compressed air including pumps, tanks and controllers, the entire technology is integrated into modular units in a compact and space-saving manner.
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container energy center with chiller and free cooler for energy optimization

ONI-AquaClean Water Treatment

Water in cooling systems with cooling towers is very often polluted by dirt and biology, which leads to problems in heat exchangers and tools. This negatively affects the production process and leads to higher operating costs and negatively affects the production process.

The ONI-AquaClean technology ensures a noticeable improvement of the cooling water quality in a very short time.

The ONI-AquaClean improves the cooling water quality in a short time

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