Profgrammable thermostat terminology

Different sources define "setpoint" differently so I'll ask here:

Is the HEAT setpoint the temperature the furnace turns on, turns off or the desired room temperature?

Is the COOL setpoint the temperature the A/C turns on, turns off or the desired room temperature?

Also, what does "DEADBAND" mean?

I'd say it's the desired room temp which should be within a band of maybe less than 1 deg +/- of where it turns on and off. Exactly how far the other points are depends on the thermostat and with some, you can change it.

Same

Not sure, but maybe it's when you have a thermostat that will automatically switch from heating to cooling and vice-versa, where the deadband is the temp it has to exceed in the other direction before it will switch.

Set Point is the temperature you have ?set? your thermostat to maintain. Thus, it means your desired room temp.

Dead Band Capability. The dead band control consists of a 5° - 10° "band" on the thermostat. It eliminates the possibility of simultaneous heating and cooling. When temperatures fall within the 5° - 10° zone on the band, say 68° - 73°, neither heating nor cooling can occur.

Google is your friend.

The Setpoint is the temperature you want to maintain.

The Deadband is the band of temperatures around the set point where nothing will happen. If the set point is 70 degrees and the dead band is 2 degrees then as the room is cooling the Heater will not turn on until the temperature drops to 69 degrees. then it will run until the temperature rises to 71 degrees. If the room is warming the AC will not turn on until the temperature rises to 71 degrees and will not turn off until it drops to 69 degrees.

The actual way it works is more complex than this, but that is the essence of Deadband.

Bill