Monitor, diagnose, and manage up to 32 VRF indoor units from a single Nexus controller. Every major brand. Protocol-level control. No per-unit wiring.
See also: Choosing the Right System for Your Building
Your VRF system was commissioned, tested, and left running. But without monitoring, you have no idea if it's still performing efficiently, or silently wasting thousands.
You can't see compressor frequency, discharge temps, or refrigerant health. Faults go undetected for weeks, sometimes months.
Units run around the clock, cooling empty spaces. Manual overrides get forgotten. Energy bills climb quarter after quarter.
When something fails, it's an emergency. No warning. No data. Just a $5,000 to $15,000 callout, and days of downtime.
The Nexus controller sits on your VRF communication bus and unlocks total visibility: from compressor superheat to per-unit energy draw.
Direct communication with every indoor unit via the manufacturer's own protocol bus. Read and write setpoints, modes, fan speeds, louver positions, and error codes, no cloud relay, no latency.
Learn more →One controller speaks Daikin, Mitsubishi, LG, Samsung, Panasonic, Fujitsu, Hitachi, Toshiba, Midea, Stiebel Eltron, York, Carrier, Trane, Gree, and more. Mixed-brand sites? No problem. Protocol translation is built in.
Track discharge temperature, suction pressure, superheat, subcooling, compressor frequency, and expansion valve position in real time. Spot refrigerant leaks before they become catastrophic.
Learn more →See exactly how much energy each indoor unit and outdoor unit consumes. Benchmark COP across seasons, identify underperforming circuits, and prove savings to stakeholders with exportable reports.
Learn more →Set granular schedules per zone, per floor, per tenant. Auto-off for unoccupied areas. Holiday calendars. Override timers that actually expire, no more units running all weekend.
Learn more →Receive instant alerts for error codes, abnormal discharge temps, compressor lockouts, and communication faults. Know exactly which unit failed, why, and what your technician needs to fix it.
Learn more →The Nexus controller auto-detects the manufacturer protocol on the communication bus. No adapters. No translation boxes. Just plug in and go.
No rewiring. No per-unit adapters. A single controller connects to the existing VRF communication bus and starts streaming data immediately.
Wire the Nexus controller to the VRF system's two-wire communication bus. It auto-detects the brand protocol and enumerates every indoor unit on the network, typically under 60 seconds.
Name your zones, assign schedules, set temperature limits, and configure alert thresholds through the Nexus iQ™ dashboard. Group units by floor, tenant, or function.
Live data streams to the cloud: setpoints, return air temps, compressor frequency, discharge temperature, error codes, and energy consumption. Accessible from any device, anywhere.
Use the data to eliminate waste. Tighten schedules, benchmark COP, detect refrigerant drift, and prove to building owners that their HVAC investment is performing at peak efficiency.
From single-storey offices to multi-level commercial towers, Nexus controllers are monitoring VRF systems across Australia every day.
Three controllers cover every VRF installation, from a single split system to a 32-unit commercial fitout.
The same DIN-rail controller as the Nexus 32, for small offices, retail tenancies, and residential VRF systems. Cloud connected out of the box.
View specs →
Mid-sized controller for multi-floor offices, medical centres, and hospitality. Ideal when you need more capacity without the full 32-unit footprint.
View specs →The flagship. Mode Master Eliminator, Auto Changeover, and full protocol translation. Built for commercial towers, data centres, and multi-tenant buildings.
View specs →Whether you're an HVAC contractor specifying a new install or a building owner tired of blind energy bills, we'll help you design the right Nexus solution.