Building Automation Systems (BASs) facilitate automated, centralized control of a building's electrical, lighting, shading, security, and HVAC systems.

In our digital world, BASs help buildings become increasingly connected, remotely controlled, and energy-efficient. With IoT (Internet of Things), BASs can support a range of new use cases by collecting more detailed data, enabling sophisticated control strategies, and empowering smart maintenance.

Looking ahead, facility managers must plan for an increasingly complex building IoT ecosystem. However, one key challenge remains: there doesn’t seem to be a simple, universal solution for the integration of BASs with the most energy-intensive building system: HVAC, and particularly, the highly efficient but complex VRF/VRV HVAC systems. Let's try to understand why.

Communication is Key

VRF and VRV systems are designed with a closed communication loop between condensers and evaporators. These communication loops vary from one manufacturer brand to another. While some buildings rely on a single HVAC brand, it is common to see multiple brands installed across different spaces or floors. This creates two problems. First, BAS platforms and HVAC systems speak different “languages” that are not naturally compatible. Second, HVAC systems from different manufacturers cannot communicate with each other. Traditionally, this means a dedicated integration solution is required for each HVAC brand, and sometimes even for different system types within the same brand. Common approaches to resolve these issues are:

Third Party Integration Gateways

When choosing 3rd-party integration gateways, the design and planning stages take longer as time is spent searching for suitable brand- and type-compatible devices. Once the hardware is selected, the integrator must become familiar with the required setup and integration process, which adds more time to the project

Manufacturer Gateways 

Many integrators choose gateways supplied by HVAC manufacturers. However, these devices often still require protocol-specific coding and embedding that code within the automation system. If the next project involves a different HVAC brand or system types, the integrator must start over the entire development and integration effort. This slows delivery while increasing overall project complexity and associated costs. While both common approaches have clear limitations, there is a more efficient alternative.
Stay Connected
Sign up for our monthly newsletter to receive news and updates

The Solution: Universal HVAC Gateways

CoolAutomation provides a universal approach to VRF\VRV integration. Our HVAC gateways work across brands and arrive preconfigured.

Developed by HVAC and integration specialists, these plug-and-play devices automatically detect HVAC components and present a single, unified interface to the BAS, enabling seamless communication with complex HVAC environments and efficient, reliable central management.

Our gateways communicate with HVAC systems using native manufacturer protocols and support all standard BAS open protocols, including BACnet MSTP, BACnet IP (BTL certified), and Modbus RTU\TCP.

Click here to learn more about our smart gateways

Igor Mitbarg
Igor Mitbarg · Co-Founder and VP Services
With more than 20 years of engineering experience and deep expertise in VRF systems, HVAC control, and HVAC integration, Igor offers authoritative insights grounded in deep technical knowledge.