How can I add a "C" wire to my thermostat? - Home Improvement …
So, the spiffy new wi-fi thermostats want power on the C wire from thermostat, but the old thermostat doesn't have a C wire at it. What's the easiest way to add the C wire/24 volt to the …
hvac - Where do I connect a C wire in an old Furnace? - Home ...
Aug 20, 2018 · Since that wire is clearly Y, the other wire in the cable going to the condenser (the white wire, since it's a two-wire cable) must be your C wire, and you can connect the blue wire …
Where do I connect my C wire from my thermostat when there are …
The original wire from the transformer should be connected to the R terminal on the thermostat, while the new C wire should be connected to the C terminal on the new thermostat. This …
How do you install a thermostat if you don't have Y or C wires?
A jumper connecting RH and RC A white wire connected to W A green wire connected to G I see no Y or C wires. Now, I have a new Honeywell RTH6580WF WiFi thermostat. The instructions …
Wifi Thermostat, No C wire on HVAC unit. No control board? Condo
Aug 1, 2019 · 1 Looking to install Ecobee thermostat. Only 4 wires coming from unit. Ecoboo has power extender kit but there's no control board on the HVAC unit, so I can't locate a c wire. …
Installing a thermostat with 3 wires only (red/R, white/W, and …
Jan 10, 2024 · One issue is that I've still not really address the missing yellow wire. But at this point (i.e., with the proposed setup above), do I need to? Note that a goal here was to not …
heating - Where to connect my “c” wire on the boiler side. Weil …
Apr 5, 2018 · To the “c” terminal or do i add it in somewhere else. The red wire is connectsd to my “R” on thermostat. Which is on the “G” terminal of the transformer. And the white wire is on the …
Installing c wire in older furnace - Home Improvement Stack …
Jul 26, 2021 · 1 I just installed a nest thermostat and need to hookup the c wire inside the furnace. I read where you need to connect the c wire to the secondary wire on the 24v side of the …
Connecting C Wire to Old furnace - Home Improvement Stack …
Dec 26, 2023 · The other transformer terminal is C The transformer terminal with the black wire coming off of it (the top terminal in your picture) is where your C wire needs to connect at. We …
Adding a C wire to a new Honeywell WIfi Thermostat
I am trying to install a new Honeywell touchscreen WIFI thermostat and need to add a C wire to my terminal inside the furnace (using the help found at How can I add a "C" wire to my …