If your indoor SCFM is 1100 and the outdoor temperature is 95 degrees, what is the approximate discharge pressure range in cooling mode?

To determine the approximate discharge pressure range in cooling mode for a heat pump with an indoor SCFM (standard cubic feet per minute) of 1100 and an outdoor temperature of 95 degrees, it's essential to consider how these variables influence the system's operation.

Discharge pressure in cooling mode is affected by factors such as the refrigerant type, the system's capacity, and the operating conditions, including ambient temperature. In general, higher outdoor temperatures lead to increased discharge pressures because the refrigerant needs to absorb more heat from the indoor space and efficiently transfer it outdoors.

In this specific scenario, the combination of a substantial indoor SCFM (which indicates a robust airflow and hence a notable cooling demand) and a high outdoor temperature of 95 degrees typically correlates with a higher discharge pressure in cooling mode. Values within the range of 370 to 390 psig are often consistent with effective operation under these conditions, acknowledging that the system is designed to operate optimally within these parameters for maintaining cooling efficiency.

Thus, the choice indicating the range of 370 to 390 psig aligns with the operating characteristics expected under the specified conditions.