You will need the following materials to top off your AC unit with freon:
* * A can of refrigerant (also called freon)*
* * A refrigerant charging hose*
* * A manifold gauge set*
* * A safety mask and goggles*
* * A wrench*
Step 2: Prepare the AC unit.
1. *Turn off the AC unit and unplug it from the power outlet.*
2. *Remove the access panel to the refrigerant lines.*
3. *Locate the low-pressure refrigerant port.*
Step 3: Connect the charging hose.
1. *Attach the charging hose to the low-pressure refrigerant port.*
2. *Open the valve on the charging hose.*
Step 4: Charge the AC unit with refrigerant.
1. *Start the AC unit and let it run for a few minutes.*
2. *Watch the manifold gauge set.*
3. *The pressure in the low-pressure line should increase as the AC unit charges.*
4. *Continue charging the AC unit until the pressure in the low-pressure line reaches the recommended level.*
Step 5: Disconnect the charging hose.
1. *Turn off the AC unit and unplug it from the power outlet.*
2. *Close the valve on the charging hose.*
3. *Disconnect the charging hose from the refrigerant port.*
Step 6: Replace the access panel.
1. *Replace the access panel to the refrigerant lines.*
Step 7: Test the AC unit.
1. *Plug the AC unit back into the power outlet.*
2. *Turn on the AC unit and let it run for a few minutes.*
3. *Make sure that the AC unit is cooling properly.*
Tips for Topping Off Your AC Unit with Freon
* *Be sure to use the correct type of refrigerant for your AC unit.*
* *Do not overcharge the AC unit with refrigerant.*
* *If you are not comfortable working with refrigerants, it is best to have a qualified technician top off your AC unit for you.*
