Afternoon,
I currently have a Honeywell ST9400C programmer with a DT90E thermostat. The programmer is generally left to continuous with the thermostat used to control the heating being on/off.
I’m considering options to upgrade to a smart thermostat. Is there a smart thermostat that will work alongside the existing programmer? Or am I looking at a new system entirely?
Thanks,
Chris
I currently have a Honeywell ST9400C programmer with a DT90E thermostat. The programmer is generally left to continuous with the thermostat used to control the heating being on/off.
I’m considering options to upgrade to a smart thermostat. Is there a smart thermostat that will work alongside the existing programmer? Or am I looking at a new system entirely?
Thanks,
Chris