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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

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