Are Gree flex heat pumps variable speed ?

The outdoor unit has a variable speed compressor (inverter) which will modulate the heating and cooling capacity down to half capacity. So for example, on a 2-ton (24,000 Btu) system the heating and cooling can modulate down to 12,000 Btu's per hour based on lighter load conditions.  The air handling unit has a multi-speed blower with a brushless DC motor. The motor being DC is much more efficient than a PSC motor and is single-speed constant volume.