IMPORTANT NOTE TO CUSTOMERS:  ALL PARTS ARE INTENDED TO BE INSTALLED BY LICENSED HVAC TECHNICIANS ONLY. INSTALLATION BY ANYONE OTHER THAN LICENSED TECHNICIANS WILL NOT BE COVERED UNDER WARRANTY AND NO TECHNICAL SUPPORT IS AVAILABLE FOR THESE PARTS.

The Fast Stat Common Maker aadds a common connection "C" to a thermostat. Allows a 24-Volt power source to be added to an existing installation, without adding an additional wire and designed to work with all popular Wi-Fi thermostats.