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Installing smart thermostat without Common wire?

Posted by Harry Jones, on Fri 08 Oct 2021 02:23pm

Hi I am looking to replace my existing thermostat with a smart thermostat. was looking at getting Hive, however when checking the wiring for my existing thermostat it appears I do not have a C- wire. it's to my understanding that smart thermostats require this wire as a power source. How hard would it be to install this wire to my current boiler?

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