Consulting

Feasibility study System Design Efficiency calculation Grants
Solutions

Solutions
Heating Cooling Ventilation Energy Supply & Storage Systems Engineering & Plant Optimization

Heat Recovery Industrial heat pumps Combined heat and power plant Refrigeration systems Rent a refrigeration unit Container Refrigeration Systems Mobile refrigeration unit Ventilation Systems Cleanroom Technology Ice storage Battery storage Compressed air systems Cooling water Cooling Water Treatment Temperature control technology Energy-Efficient Machine Optimization

Heat Recovery

Our heat recovery systems are used worldwide by customers across a wide range of industries. This not only helps customers reduce their energy costs but also makes a significant contribution to reducing their environmental impact. Find out more—free of charge and with no obligation—about the possibilities for utilizing waste heat in your business!

Industrial heat pumps

Industrial heat pumps offer businesses an efficient solution for heating and process heat—especially when waste heat is used as a heat source and the goal is to reduce energy costs.

Combined heat and power plant

As a system supplier, ONI-Wärmetrafo GmbH offers you a wide range of services from a single source. This includes the integration of an existing CHP plant or the design of a new one. We have already completed numerous projects involving combined heat and power plants and would be happy to present you with a system solution tailored to your needs and based on our experience.

Energy-efficient cooling systems tailored to your needs

Let our experts advise you and schedule a no-obligation consultation today. We look forward to designing a system for you.

Rental refrigeration systems / Rental chillers

Do you need additional capacity on short notice, or are you planning a renovation that requires a flexible cooling solution? Then get in touch with us!

Container Refrigeration Systems

Demand for modular energy centers has risen rapidly in recent years. The reasons for this trend can certainly be found in the quick availability, flexibility, and space-saving design of these high-performance ONI systems. From cooling and chilled water to heating and compressed air supply—including pumps, tanks, and control units—the entire system is arranged in a compact, space-saving manner within modular units.

Refrigeration Equipment & Technology

A reliable and energy-efficient supply of cooling water for production is a top priority for any business. That is why more and more companies around the world are choosing our energy-optimized and highly reliable cooling system technology

Highly efficient ventilation systems and room air conditioning systems

Our ventilation systems and room air conditioning systems feature state-of-the-art technology and meet the highest standards for efficiency and reliability.

Cleanroom Technology

The need for a cleanroom environment, where exposure to airborne solid or liquid particles is minimized, usually stems from product-specific or hygiene requirements. The range of industry-specific requirements is broad, and the associated system engineering is correspondingly complex.

Ice storage

Almost every industrial facility generates waste heat. Use our heat recovery systems to harness this energy for heating your offices, factory floors, and much more.

Battery storage in a container

A container-based battery storage system is a scalable storage solution that ensures flexible access to electrical energy during operations.

Compressed air systems

A reliable and efficient compressed air supply is a top priority for industrial companies. In this context, “reliable” also means generating and supplying compressed air in the quality and quantity required for production processes, machinery, and equipment.

Cooling water for industrial facilities

Cooling water in industrial systems: hydraulics, standards, operational and process safety, and energy efficiency in the recirculation cooling loop with ONI-PowerSave.

Cooling Water Treatment for Industrial Facilities

Cooling water treatment for reliable cooling systems: Stabilize water quality; reduce corrosion and scale buildup.

Temperature Control Technology with Rhytemper®

Optimal manufacturing process. The unit costs of die-cast and injection-molded parts are largely determined by mold temperature control! This is because mold temperature control has a direct impact on process stability, product quality, and cycle time.

EtaControl®: Energy Efficiency in Manufacturing

EtaControl® from ONI helps plastics processors quickly reduce energy costs.
Industries

Automotive Chemistry Energy Plastic Food Metal Pharmaceuticals Data centers
Service & Maintenance

24/7 Emergency Service Maintenance Rental cooling Monitoring Spare Parts Inquiries
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An employee inspects glass bottles filled with red fruit juice at a filling line.

Energy Efficiency for Food Production & the Cold Chain

Whether it’s process cooling in manufacturing, temperature-controlled warehouses, or retail stores—precise temperatures, hygienic design, and low operating costs are essential. ONI provides complete refrigeration systems for planning, construction, control, and service, including water treatment and monitoring.ONI
is your reliable partner for implementing refrigeration and control systems for production, warehousing, retail, and logistics—with a focus on energy efficiency, hygiene, and availability.

Commercial/Industrial Refrigeration & Supermarket Refrigeration: From counter cooling to megawatt chillers, ONI offers project-proven solutions for food environments.
Low-GWP/natural refrigerant options: Market trends (propane/CO₂) reduce GWP risks and are eligible for subsidies.
Lifecycle services & rental refrigeration: coverage for renovations/peak periods, rapid availability.

Overview of the Site

Benefits for customers in the food industry
Project Process
Challenges in the food industry
ONI Solution Overview for Food Companies
Contact
Why Choose ONI
References from the food industry

Benefits for customers in the food industry

Greater process reliability – less operational effort

Freshly baked muffins pass through a cooling tunnel on a conveyor belt.

The focus is on robust operation that meets your quality requirements: consistent media and temperature levels, clear operational statuses, maintenance-friendly designs, and—when necessary—redundancy for critical areas.

Operational reliability from production to POS
Cost efficiency through low-energy systems & heat recovery
Flexibility through rental cooling/service packages
Temperature and hygiene safety with redundant design and remote monitoring
Consolidation of trades/contracts, transparent TCO
Sustainable savings and eligibility for subsidies

Why you should choose ONI

Everything under one roof

From analysis to implementation—structured and production-ready

For optimizations to truly work, you need to understand your specific conditions: product changes, shift operations, hygiene processes, temperature zones, and peak loads. That’s why we start with a practical assessment: We examine equipment conditions, energy flows, consumption data, and interfaces—focusing on what really matters in production.

Current Status Analysis (HACCP Requirements, Temperature Zones)
Concept (refrigerant roadmap, heat recovery, redundancy)
Business Case + Funding
Implementation & Training (Hygiene/Operation)

Additional Services

A laser cutting head cuts components out of a steel sheet in a shower of sparks.

Challenges

Technical challenges facing food companies

Temperature stability throughout the cold chain

Whether in production areas, buffer zones, or storage areas: The requirements are high and vary depending on capacity utilization and the product portfolio. The technology must accommodate load fluctuations without causing processes to “drift.”

Hygiene, cleaning cycles, and clear operational statuses

Cleaning, condensate management, and sensitive areas require solutions that are designed with hygiene in mind and remain uncomplicated in daily use. Additionally, operating conditions and processes must remain easy to track—even for audits.

High availability despite tight production schedules

If media supply or cooling fails, processes come under immediate pressure. That is why service-friendly systems, sensible redundancies, and short response times are crucial.

Solutions