2020 Nissan Altima: A/C Refrigerant & Oil

Quick answer

• Refrigerant type: R-1234yf
• Full system charge: 19.4 oz (550g)
• PAG oil type: PAG 46
• PAG oil amount: 4.1 oz (120mL)
• Low-side service port location: Near the firewall, on the passenger side of the engine bay
• High-side service port location: In front of the radiator, on the driver's side of the engine bay

Why R-1234yf matters

The 2020 Nissan Altima uses R-1234yf refrigerant, which has a lower global warming potential (GWP) than the previously used R-134a. This change was mandated by the EPA to reduce the environmental impact of automotive air conditioning systems. However, R-1234yf is more expensive than R-134a and requires a special recovery machine for service. It is also mildly flammable, which is why it is important to have your A/C system serviced by a qualified technician.

Recharge procedure

A/C system recharge is not a simple DIY task. It requires specialized equipment and knowledge to do it safely and correctly. The system must be evacuated of all refrigerant before it can be recharged. This is done with a vacuum pump, which removes any air and moisture from the system. Once the system is evacuated, it can be recharged with the correct amount of refrigerant by weight, not pressure. Using the correct amount of refrigerant is critical for proper A/C performance and to prevent damage to the system.

Common A/C problems for this vehicle

The most common A/C problems for the 2020 Nissan Altima are compressor failures, condenser issues, and evaporator leaks. Compressor failure is often caused by a lack of lubrication, which can be the result of a refrigerant leak. Condenser issues can be caused by road debris or a collision. Evaporator leaks are often difficult to diagnose and can be expensive to repair.

When to call a pro

If you are experiencing any problems with your A/C system, it is best to have it diagnosed and repaired by a qualified technician. This is especially true if your vehicle uses R-1234yf refrigerant, as it requires special handling. A qualified technician will have the proper equipment and knowledge to safely and correctly service your A/C system.

Disclaimer: It is illegal to service your own A/C system without an EPA 609 certification. Refrigerant is a hazardous material and can cause serious injury if not handled properly. Find a certified A/C shop on Repairius.