Heat Pumps Are Different - Honeywell CT70 Wiring Manual

HEAT PUMPS ARE DIFFERENT

Heat pump systems
usually have a
supplemental,
Second Stage
heating system that
operates only when
necessary. This
heat pump
thermostat is
designed to
minimize more
expensive second-
stage operation,
indicated by the
green AUX. HEAT
light on your
thermostat.
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