So, the target high-side pressure range would be 198-225 psi when the ambient temperature is 90°F (32°C). Using this rule of thumb, you can quickly determine if your AC system’s low and high-side pressures are operating within normal ranges based on the current ambient temperature.
What is a good AC pressure?
As the ambient temperature increases, the high-side pressure will also increase. For example, at 85°F (29°C), the high-side pressure might be around 225 to 250 psi. 25 to 45 psi low side auto ac pressure depending on the ambient temperature and system load. 150 to 250 psi ac pressure depending on the ambient temperature and system load.
What psi should a car air condenser be at?
At 200 psi, the refrigerant entering the condenser will be around 130°F. However, ambient humidity also affects how your car’s AC works because high humidity changes how the heat transfers. For more information on normal AC pressures, see the charts below.
