Heating and cooling design supply air temperatures are not room setpoint temperatures (e.g. for thermal comfort). They are min/max user-set design temperatures required for airflow rate sizing for cooling and/or heating needs (e.g. fan-powered terminal units, or central HVAC). Cooling supply temperatures (e.g. 55F, or 13°C) need to be below desired room summer setpoints (e.g. 77F, or 25°C) in order to be effective. Heating supply temperatures (e.g. 88F, or 31°C) need 31°C)need to be above desired room winter setpoints (68F, or 20°C) to be effective. So heating supply temperatures can't be below cooling supply temperatures.

Zone heating/cooling setpoints are set through schedules.

Heating and cooling design supply air temperatures are not room setpoint temperatures (e.g. for thermal comfort). They are min/max user-set design temperatures required for airflow rate sizing for cooling and/or heating needs (e.g. fan-powered terminal units, or central HVAC). Cooling supply temperatures (e.g. 55F, 55F or 13°C) need to be below desired room summer setpoints (e.g. 77F, 77F or 25°C) in order to be effective. Heating supply temperatures (e.g. 88F, or 31°C)need need to be above desired room winter setpoints (68F, (68F or 20°C) to be effective. So heating supply temperatures can't be below cooling supply temperatures.

Zone heating/cooling setpoints are set through schedules.

Heating and cooling design supply air temperatures are not room setpoint temperatures (e.g. for thermal comfort). They are min/max user-set design temperatures required for airflow rate sizing for cooling and/or heating needs (e.g. fan-powered terminal units, or central HVAC). Cooling supply temperatures (e.g. 55F or 13°C) need to be below desired room summer setpoints (e.g. 77F or 25°C) in order to be effective. Heating supply temperatures need to be above desired room winter setpoints (68F or 20°C) to be effective. So heating supply temperatures can't be below cooling supply temperatures.