I'm wanting to hook a Ecobee4 thermostat up.

On my furnace I have 5 terminals R with a red wire attached, W with a white wire attached, Y with 2 black wires attached, G with a green wire attached and T with a white wire attached.

My current old thermostat has green going to G red to RC black to Y and white to W. Then there is a white and black wire behind the wall not attached to anything.

Any help would be greatly appreciated I am a rookie

  • Can you post photos of the wiring at both ends? – ThreePhaseEel Jan 7 at 23:24

Your Answer

By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Browse other questions tagged or ask your own question.