Replaced an older Honeywell stat with an E Nest. Only two wires in wall, a W and a R, no C wire. Went ahead anyway and installed the stat. It seems to work fine, but loses the WiFi connection from time to time. I check the Nest app on my phone couple of times a day to make sure it's connected. I'm a bit leery about installing the power supply gizmo at the furnace wiring, but it does seem straightforward accoding to UTube videos. Has anyone done it?
