The Airnexus™ Hydronic Expansion adds full hydronic system control to your existing Nexus setup. Whether you’re running underfloor heating loops, radiator circuits, fan coil units, or chilled water systems, the Hydronic Controller brings every element under one intelligent platform. Monitor valve positions, pump status, flow temperatures, and zone demands in real time through the Nexus iQ™ cloud dashboard.
Flexibility is at the heart of this expansion. Multiple I/O configurations — 8I-8O, 11I-6O, 16I-6O, and 32I-12O — ensure there’s a setup for every project, from a compact residential install to a large commercial building with dozens of hydronic zones. Each configuration is designed to handle the specific demands of valve control, pump sequencing, and mixing circuit management without compromise.
Connected through the Nexus controller, the Hydronic Expansion delivers the same real-time monitoring, energy tracking, and cloud-based scheduling you expect from the Airnexus ecosystem. Combine it with VRV/VRF controllers and sensor expansions for a truly unified HVAC management solution across every system type in your building.
Hydronic system control — Complete management of heating and cooling hydronic circuits
Multiple I/O configurations — Choose from 8I-8O, 11I-6O, 16I-6O, or 32I-12O to suit your project
Underfloor heating support — Zone-by-zone control of underfloor heating loops and manifolds
Radiator control — Intelligent radiator circuit management with demand-based scheduling
Fan coil control — Manage fan coil units with precise temperature and fan speed regulation
Chilled water systems — Monitor and control chilled water circuits for cooling applications
Cloud connected through Nexus — Full Nexus iQ platform access via your existing Nexus controller
| Configurations | 8I-8O, 11I-6O, 16I-6O, 32I-12O |
| Control | Valves, pumps, mixing |
| Connectivity | Via Nexus controller |
| Power | 240V AC |
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