I have a thermopump in a three story home, the thermostat is on the main floor not directly next to a duct.
Here are the temperatures I generally get in the summer (relative to thermostat setting)
Main floor <1
Basement <3
Top floor >3
What is the best approach to get the cool air the where it's most needed ? (By day on main floor, less in basement and top and at night on top only)