Honeywell Y594R1763 24V multistage heatpump thermostat, includes T874R 1954

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Honeywell Y594R 1763 24V multistage heatpump thermostat, includes T874R 1954 and Q674L 1827;
replaces Y594R 1136 and GE AY28X078 and GE AY28X139		$100.1567-Y5H

Specifications provided by manufacturer on manufacturer's website

This `Honeywell Y594R1763 24V multistage heatpump` can be substituted for these OEM part numbers:

manufacturerpart number(s)
Honeywell
Y594R 1763
Y594R1763
Y594R 1136Y594R1136

T874R 1954 {included}

Q674L 1827 {included}
GE
AY28X078
AY28X139