How does a wireless thermostat for combi boiler work?

I’m looking to upgrade my thermostat so I can control heating and hot water separately. Is this possible with a combi boiler? If so, does anyone have good thermostat recommendations I can check out?

Asked by duncan on 29th Jan 2026
Expert Trade Answers
"For a boiler, a wireless thermostat works like a remote on/off switch with temperature sensing.

1. Wireless thermostat (room unit)
• Usually battery powered
• Sits in a living space (not wired to the boiler)
• Measures room temperature
• You set the target temperature or schedule

2. Receiver (boiler controller)
• Wired directly into the boiler’s control terminals
• Permanently powered
• Listens for signals from the thermostat

Yes this definitely possible. As you have a Combi boiler, your hot water temperature will be controlled from the boiler itself"
Answered on 29th Jan 2026 - Member since Aug 2023 - report
"Hi if its combi boiler then you can't control hot water with thermostat you can use thermostat for heating only for combi boiler
Hive is good if you want to use with phone"
Answered on 29th Jan 2026 - Member since Nov 2023 - report
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