Hi - I am having difficulty replacing my old thermostat with a Noma brand programmable thermostat. The old thermostat - an old manual mercury type - is connected to 5 wires labelled on the circuit board as G, R, Y, W, and 4. it looks very much like the model shown on this website: ...

Trying to replace an old round thermostat with a new noma digital. Instructions ask to connect the R wire with the Rc wire but old thermostat only has an rh wire and r wire. Is the rh the same as the rc wire?

I am currently trying to install a digital thermostat. The old one has two wires coming out of the wall, one red and the other white but are not labeled. On the digital thermostat the connections are: Y, G, RH, RC, & W. which wire goes where?

I have a digital non programmable thermostat. I have 5 wires (yellow, red, white, blue and dark brown) could you tell me where do they I took the old one and didn't pay attention where the blue and dark brown go.) Thank you very much. I hope you can answer this today since it is very cold this...

I have a high eff. Furnace, no A/C. I would like to change out the old round dial Honeywell for a digital/programmable. I have a red and white wire out of the wall and the posts I have read say put the red to Rh and the white to W or W1. Sound right? The instructions sure don't cover it. ...