What AC refrigerant does Subaru use?
Subaru generally uses the low-GWP refrigerant R-1234yf in its newer vehicles, while older models and some regional markets may still rely on R-134a. The exact refrigerant for a given Subaru depends on the model year and market, so it’s best to verify labeled specifications on your vehicle.
Overview of Subaru refrigerants
Refrigerants differ in environmental impact and maintenance requirements. R-134a has a higher global warming potential, while R-1234yf offers a much lower GWP. Subaru has shifted toward R-1234yf for newer production, but older inventory and certain regions may still use R-134a. Professionals use specialized equipment for 1234yf, and mixing these two refrigerants is not recommended. Always confirm the refrigerant type before servicing.
- R-1234yf — Used by most newer Subaru models (produced in recent years). It offers significantly lower global warming potential than R-134a and requires dedicated service equipment.
- R-134a — Found in older Subarus and in some regional markets where regulations or supply limits have not driven a full switch to 1234yf.
In practice, if you own a newer Subaru or are purchasing a new model, you are likely dealing with R-1234yf. If you own an older model or operate in a region with different regulations, R-134a may still be present. Always verify the exact type for your vehicle before any service work.
How to verify the refrigerant type in your Subaru
To confirm the refrigerant installed on your vehicle, use the steps below. The information you need is typically found on a label under the hood or in official manuals.
- Locate the A/C service label on the vehicle. It’s usually affixed near the radiator support, hood latch area, or compressor area and lists the refrigerant type and required oil.
- Check the owner’s manual or service manual for the model-year refrigerant specification.
- Ask a Subaru dealer or certified mechanic to read the system’s service port tags or documentation if you’re unsure.
- Be aware that 1234yf and 134a use different service equipment and have different compatibility requirements—do not mix them and do not substitute without proper procedure.
By verifying the label or official documentation, you ensure that the correct refrigerant is used for servicing and avoid potential damage to the HVAC system.
Summary
Subaru’s refrigerant usage is primarily aligned with modern automotive environmental standards. Newer Subarus generally use R-1234yf, while older models and some markets still rely on R-134a. The exact type varies by model year and region, so owners should check the vehicle’s service label or the owner's manual to confirm. For any A/C service, rely on a qualified technician who can accurately identify and handle the correct refrigerant.
