What should your approximate suction pressure range be at an outdoor temperature of 95 degrees with an indoor wet bulb temperature of 59 degrees?

In the context of air-to-air heat pumps, the suction pressure refers to the pressure in the evaporator coil, where the refrigerant absorbs heat from the air. When evaluating the appropriate suction pressure for an air-to-air heat pump operating at an outdoor temperature of 95 degrees Fahrenheit and an indoor wet bulb temperature of 59 degrees Fahrenheit, it's important to consider the characteristics of the refrigerant being used and its thermal properties.

The correct answer reflects a typical suction pressure range that aligns with the operating conditions presented. At higher outdoor temperatures, such as 95 degrees, the system should be able to maintain efficient operation, and a suction pressure in the range of 128 to 134 psig represents a balance between efficiency and the ability to absorb heat effectively. The corresponding indoor wet bulb temperature further indicates the moisture content in the air, which affects the heat absorption capacity.

This range is particularly important because it ensures that the heat pump can operate efficiently while still providing the desired heating or cooling load. When the system operates within this range, it is less likely to encounter issues like compressor overheating or insufficient cooling, both of which can arise from operating outside the optimal suction pressure range.