Smart heating system commissioning.
The complete system now works as intended. All 15 underfloor heating circuits across 5 zones respond independently. All 4 radiators are controllable per-room. The Vaillant boiler starts and stops on demand via OpenTherm. The homeowner controls everything from the Evohome panel or the Total Connect Comfort app on their phone. Full system documentation was handed over.
A fully installed system that didn't work
A homeowner had just completed a full renovation. The heating contractor had installed a Honeywell Evohome smart heating system — hub, underfloor heating module, wireless thermostats, radiator actuators, and a Vaillant boiler — but couldn't get it all talking together. We were brought in by the general contractor — who manages all tasks and subcontractors for the project — despite having zero prior experience with heating systems. What we do have is the ability to read documentation, reason through a system, and not give up.
Systematic commissioning from the ground up
We started fresh: reading the commissioning docs for every device, understanding the 868 MHz RF network topology, and pairing each component to the Evohome hub in the correct sequence.
Fully operational, fully remote
The complete system now works as intended. All 15 underfloor heating circuits across 5 zones respond independently. All 4 radiators are controllable per-room. The Vaillant boiler starts and stops on demand via OpenTherm. The homeowner controls everything from the Evohome panel or the Total Connect Comfort app on their phone. Full system documentation was handed over.