I am not sure if the nest learning thermostat will work.

[ThomasD5N6]

I am not sure if the nest learning thermostat will work. I have a two-wire system using the Honeywell TH1100DV1000 Nonprogrammable Heat Only Thermostat. One wire plugged into R, one in W.

[Jenelyn_O]

Hi ThomasD5N6,

Thanks for checking it with us. I'd like to take a closer look at it. To confirm, in what country are you located? Could you please check your system's control board and take a picture of it? Ensure that the labels of the wires are visible. Also, it will help us to see if you have spare wires that we could use for the Nest Learning Thermostat. 

Best,

Jenelyn