That depends on the refrigerant type and ambient air temperature.
Freon is added through the low side ac port. A gauge is recommended to check the Freon pressure, as too low or too high pressure can cause the ac not to work properly.
Freon goes into the low pressure side of the air conditioning system. The attachment from the gauge used to put the freon in will only attach to the low pressure valve so it would be pretty hard to do it incorrectly.
R134a goes into the low pressure port
Always to the low pressure side. The low pressure side fitting is normally near the dryer ( large silver canister).
The Freon is added through the low side ac port. Using the proper type of Freon and a gauge, fill the system to the recommended pressure.
On the low pressure side. A charging hose will only fir on the low pressure side of the AC system.
To check the freon levels in your air conditioning system, you will need a pressure gauge. Attach the gauge to the low-pressure port on the system and compare the reading to the manufacturer's recommended levels. If the pressure is too low, you may need to add more freon. It is recommended to consult a professional if you are unsure how to proceed.
The schrader valve on the low pressure side of the system.
The Freon is added through the low side ac port. Using a gauge and the proper type Freon, fill the system to the recommended pressure. Too low or too high Freon pressure will result in the system not operating properly.
Freon is typically added to the low-pressure side of an air conditioning system. This is because the low-pressure side is where the refrigerant is in a gaseous state, allowing it to absorb heat effectively. Adding refrigerant to the high-pressure side can lead to overcharging and potential damage to the system. Always consult the manufacturer's guidelines for specific instructions on your system.
You don't add Freon as it has R134a not Freon. You add it to the low pressure side which is the larger hose.
Low pressure side-- larger hose from compressor