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My name is Billy.
You can post the model numbers here..
Also if you did not see Y2 hooked up in thermostat it is not going to be a 2 stage.
I apologize but the only question I received was......
I am replacing some thermostats for some lennox units. How can I tell if they are 2 stage or single stage cooling? I do have the model #s
The 2 contactor situation is not always true....many 2 stage are run by a PCB board.
But as mentioned, if you have model numbers, I can be specific