2022 Nissan Altima A/C Refrigerant & Oil Capacity

Quick answer

• Refrigerant Type: R-1234yf
• Full System Charge: 14.1 oz (400 grams)
• PAG Oil Type: PAG 46
• PAG Oil Amount: 4.7 fl oz (140 mL)
• Low-Side Service Port Location: On the suction line, typically near the firewall on the passenger side.
• High-Side Service Port Location: On the discharge line, usually near the condenser at the front of the vehicle.

Why R-1234yf matters

The 2022 Nissan Altima utilizes R-1234yf refrigerant, a significant change from the R-134a used in older vehicles. This transition, which started around 2014 for many manufacturers, is driven by environmental concerns. R-1234yf has a much lower Global Warming Potential (GWP) compared to R-134a, making it more eco-friendly.

However, this newer refrigerant comes with its own considerations. R-1234yf is significantly more expensive than R-134a. Furthermore, specialized equipment is required for its recovery and recharging. Standard R-134a recovery machines are not compatible with R-1234yf systems due to different fittings and safety protocols. This means that not all shops are equipped to service R-1234yf systems, and DIY recharging is strongly discouraged due to the specialized nature of the equipment and the potential for improper charging, which can damage the system.

Recharge procedure

Recharging the A/C system on your 2022 Nissan Altima should always be done by a certified professional. While it might seem straightforward, simply connecting a can of refrigerant and watching a pressure gauge is an inadequate and potentially damaging approach. The most critical step in an A/C recharge is evacuating the system. This process uses a vacuum pump to remove all air and moisture from the system. Moisture in an A/C system can lead to corrosion and the formation of acids, which severely damage components like the compressor.

Once evacuated, the system must be charged with the precise amount of refrigerant by weight, not pressure. Your 2022 Nissan Altima requires 14.1 ounces (400 grams) of R-1234yf. Overcharging or undercharging, even by a small amount, can lead to reduced cooling performance, increased strain on the compressor, and ultimately, premature system failure. Professional shops use highly accurate charging stations that weigh the refrigerant as it enters the system, ensuring the correct charge.

Common A/C problems for this vehicle

While the 2022 Nissan Altima is a relatively new vehicle, some common A/C issues can still arise:

• Compressor Failures: The A/C compressor is the heart of the system. Issues can range from electrical problems with the clutch to internal mechanical failures. Signs include a lack of cold air, loud noises when the A/C is on, or the compressor not engaging.
• Condenser Issues: The condenser, located at the front of the vehicle, is responsible for dissipating heat. It's vulnerable to damage from road debris, which can cause leaks. A clogged or damaged condenser can also reduce cooling efficiency.
• Evaporator Leaks: The evaporator is located inside the dashboard and cools the air entering the cabin. Leaks in the evaporator can be difficult to diagnose and often result in a musty odor from the vents and a slow loss of refrigerant over time.
• Electrical Problems: Modern A/C systems rely heavily on electrical components, including sensors, relays, and the control module. Faulty wiring or component failures can lead to the A/C system not operating correctly.

When to call a pro

Given the complexity of modern R-1234yf A/C systems and the specific tools required, it's always best to call a professional for any A/C issues. If you notice any of the following, schedule an appointment with a certified A/C technician:

• Your A/C is blowing warm air.
• You hear unusual noises when the A/C is operating.
• There's a strange odor coming from the vents.
• The A/C system cycles on and off frequently.
• You see any visible leaks under your vehicle (though many A/C leaks are not visible).

Safety Disclaimer: Working with automotive air conditioning systems can be dangerous. Refrigerants are under high pressure and can cause severe frostbite if they come into contact with skin or eyes. Improper handling can also lead to environmental damage. Always wear appropriate personal protective equipment. It is illegal to intentionally release refrigerants into the atmosphere. Only individuals certified under EPA Section 609 are legally permitted to service mobile air conditioning systems.

Find a certified A/C shop on Repairius.