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Tell me or attach a photo of thermostat wiring , give me model on both thermostats
Model on the two thermostats
Ignore the phone call offer if not interested .It is auto generated.
OK so let me understand, Are you saying the old furnace just had two wires, R and W and you are trying to use the new furnace with only two wires ?
Can you verify model on old thermostat.Not seeing a Honeywell 1444. I have never seen a thermostat that used Y as a heating terminal.Y controls the compressor in ac unit if you have ac