Back in the olden days, thermostats were simple on/off devices that didn’t need their own continuous power supply. Modern thermostats with Wi-Fi and backlit display, by contrast, need a steady supply of juice. The C wire, or “common wire” enables the continuous flow of 24 VAC power to the thermostat. Technically speaking, power flows from […]
Problem: Your HVAC system lacks a C-wire (common wire) for your new WiFi thermostat Solution: Install a Venstar Add-a-Wire adapter! Venstar Add-a-Wire Adapter: a Simple Solution to a “Common” Problem Short a wire? If you are lacking the (ironically named) “common wire”, also known as the C-wire, you might be pleased to learn that there’s an adapter for that. The Venstar Add-a-Wire […]