To set up a dual-zone system with Homely, you will need to install two Homely nodes, one for each heating zone, which need to be installed via the installer app. You’ll need to provide some information regarding each zone so we are able to control and optimise correctly. The second node can be purchased through our approved distributors.
The additional node comes at an added cost reflecting the extra modelling and data requirements involved in supporting two independent heating zones. Each node learns and manages its zone separately, allowing Homely to optimise heating performance within the limits of the system design.
Installation requirements
To ensure reliable operation and accurate control, the following points are essential:
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Follow the manufacturer's guidance for how to install a dual zone with the particular make and model of heat pump. Pay particular attention to which zone should be the cooler circuit and any extra sensors that may be required; like an extra flow thermistor on the second zone flow.
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Confirm correct both zones are working as expected before installing Homely.
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Matching zone configuration on the heat pump controller: The zone configuration on the heat pump controller must match the Homely setup. This alignment ensures both systems recognise which circuit is which and prevents control conflicts.
Established System Configuration: Two independent modulating flow temperature controls
The most effective way to install a dual-zone system with Homely is to enable two independently modulating flow temperature controls. This allows the system to deliver two different flow temperatures at the same time, giving Homely the ability to optimise both zones more effectively and achieve true dual-zone performance.
There are different ways to achieve this, and the choice of method will depend on system design, installer preference, and the customer’s needs. One example is the use of an electronic mixing valve, which provides independent temperature control on one circuit.
How Dual Modulating Flow Temperatures Work
Each zone modulates its own flow temperature in response to local demand. For example, one zone may run at a higher temperature while the other operates cooler, allowing both to heat simultaneously without compromising efficiency.
Homely sends a separate flow temperature target to each zone, ensuring each area receives the right level of heat while helping the heat pump maintain efficient operation for longer periods.
Why We Recommend This Configuration
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Enables two independent flow temperatures to operate simultaneously.
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Allows Homely to achieve greater efficiency and control than other dual zone configurations.
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Keeps the heat pump operating at lower average temperatures, improving performance and reducing running costs.
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Prevents both zones from being driven by the higher temperature demand.
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Works effectively across a range of systems, including radiator-only and mixed radiator and underfloor setups.
What Kind of Heating Experience to Expect
Systems with two independently modulating flow temperatures deliver a smoother and more consistent heating experience. Each zone receives the temperature it needs, reducing overshoot and uneven heating.
Because the heat pump can operate both zones at optimal flow temperatures, the system achieves better stability, quieter operation, and improved comfort for occupants.
Alternative Method: Single Controllable Flow Temperature
Homely can also work with dual-zone systems that don’t use mixing and just have zonal control. In these setups, both zones share a single flow temperature from the heat pump.
Each zone is controlled by a valve or pump, opening when heat is required. When both zones call for heat together, the heat pump must run at the higher required flow temperature. When only one zone calls, it delivers the correct flow for that zone.
Some installations use a thermostatic mixing valve on one circuit, often to protect underfloor heating. This approach is simple and reliable but limits Homely’s optimisation capabilities, as the mixing valve operates mechanically and cannot be controlled by Homely.