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AHU ControllersOJ Air™ Plus

A controller that simplifies every stage of your AHU system

In modern air handling units, the controller plays a key role in how systems are integrated, installed and commissioned, operated, and maintained.

With its reimagined user-based interface and many other advances, the OJ Air™ Plus is designed to make that role simpler, faster, and more reliable for everyone working with the system.

For your OEM business, the time and cost savings this new controller delivers throughout your AHU’s lifecycle add up to a stronger business case and more satisfied customers.

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OJ Air™ PlusFits Seamlessly Into
Your AHU Design

Controller integration into AHU designs is a critical first step for any OEM. If the controller is designed flexibly and offers broad compatibility, integration is quick and easy – saving time and money at integration and beyond.

The OJ Air™ Plus is a highly flexible control platform that integrates easily into a wide range of AHU configurations. With its broad mix of I/O, multiple communication ports, and built-in Modbus support, it connects directly to key components such as drives, sensors, and actuators, as well as to BMS systems.

Built-in Modbus communication for plug fans and actuators, combined with support for OJ Electronics components and third-party devices, enable a seamless digital bus inside the AHU. This reduces wiring complexity, simplifies system design, and makes it easier to standardize solutions across your product portfolio.

The OJ Air™ Plus is a highly flexible control platform.

OJ Air™ PlusFaster Installation and Commissioning

Pre-programmed for compatibility with approximately 90% of standard AHU applications, the OJ Air™ Plus comes ready to configure out of the box.

Via a browser-based interface, systems can be configured and commissioned without specialized programming. A visual drag-and-drop approach simplifies setup and makes it easier to match the controller to the specific AHU design – reducing setup time and shortening the path to stable operation.

The result is faster installation, more predictable commissioning, and fewer errors during system start-up.

OJ Air™ PlusEfficient User-Tailored Operation

Once your AHU is running, the OJ Air™ Plus supports efficient day-to-day operation through a uniquely user-centric interface.

Five dedicated user profiles ensure that each role – from facility manager to service technician – has access to the functions and information they need. Advanced settings, for example, are available only to qualified users, helping protect system stability while still enabling deeper optimization where needed.

All this reduces complexity, limits the risk of incorrect adjustments, and makes it easier to maintain stable system performance over time.

User-centric InterfaceFive User Profiles

Facility managers
Access to essential functions, scheduling, and notifications in a safe environment that protects system stability.

Facility managers PRO
Advanced tools and deeper system insight for monitoring performance and fine-tuning operation.

Service technicians
Fast access to diagnostics and maintenance functions, supported by direct Wi-Fi connectivity.

Commissioning technicians
 Dedicated tools for quick setup and stable start-up, including automatic commissioning reports.

Factory engineers
Drag-and-drop system design and guided setup tools for preparing ready-to-install AHU configurations.

Service technician using OJ Air Cloud to connect to OJ Air Plus Controller

OJ Air Cloud™Service and Support Without Delays

For service teams, quick and easy access to the controller is essential. With a built-in Wi-Fi access point, technicians can connect directly to the system without accessing the customer’s network. OJ Air Cloud™ enables monitoring, real-time diagnostics, and support without requiring on-site presence. Separate access paths for local and remote interaction further support secure and flexible servicing.

All this simplifies troubleshooting, reduces downtime, and lowers overall service costs.

Learn more about OJ Air Cloud™ remote access

OJ Air™ PlusPrecision Control Across the Lifecycle

From system design and integration to commissioning, operation, and service, the OJ Air™ Plus is built to support every stage of an AHU system’s lifecycle.

By simplifying each step, it helps OEMs deliver more consistent systems, reduce engineering effort, and ensure reliable operation from day one.

The result is a controller that strengthens overall system performance while making day-to-day work simpler.

OJ Air Plus ventilation controller from OJ Electronics

Technical highlights

  • Pre-programmed for approximately 90% of AHU applications
  • Integrated Wi-Fi access point for direct service access
  • Remote connectivity via OJ Air Cloud™
  • Built-in Modbus support and BMS communication
  • Flexible I/O configuration for broad system compatibility
  • Drag-and-drop configuration via web interface
  • Automatic commissioning reports (PDF)
  • Compatible with OJ Air™ system components and extensions

OJ Air™ PlusProducts

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