The Buick Encore’s air-conditioning refrigerant type depends on model year and market: older Encores typically use R-134a, while many newer models (and some regional variants) use R-1234yf. To be sure, check the under-hood service label or the owner's manual.
In this article, we explain the refrigerant types involved, how to identify which one your Encore uses, and what to do if you need to service or refill the A/C system.
Refrigerant types used in the Buick Encore
There are two refrigerants you may encounter in Buick Encores, depending on when and where the vehicle was built. R-134a has long been the standard for older vehicles, while R-1234yf is being adopted in newer models for its lower global warming potential. The exact type for your particular Encore is determined by its production date and regional configuration.
R-134a
R-134a (Tetrafluoroethane) is the traditional refrigerant used in many vehicles built before the mid-2010s. If your Encore uses this refrigerant, service equipment, oils, and refill practices will align with 134a specifications. Always verify with the label or manual before servicing.
R-1234yf
R-1234yf (difluoromethyne) is a newer refrigerant adopted by many manufacturers to reduce environmental impact. If your Encore is equipped with 1234yf, the service must use 1234yf-compatible equipment and oil. The under-hood label will indicate “R-1234yf.”
How to verify the refrigerant on your Buick Encore
To determine the exact refrigerant for your vehicle, follow these steps. This ensures you purchase the correct refrigerant and avoid cross-contamination during service.
- Locate the A/C service label under the hood (on the radiator support, hood edge, or near a strut tower). The label lists the refrigerant type (R-134a or R-1234yf) and the required oil.
- Consult the owner’s manual or a dealership with your VIN for model-specific refrigerant information.
- If the label is missing or unreadable, contact a GM-certified technician to confirm the refrigerant for your exact VIN and production date.
- When servicing, ensure the shop uses equipment compatible with the identified refrigerant and does not mix refrigerants.
Verifying the refrigerant type before service protects performance, safety, and compliance with environmental regulations.
Model-year and regional variations
Refrigerant type can vary by year and market. In the United States, older Buick Encores are typically equipped for R-134a, while some newer or regional variants may ship with R-1234yf. Because variations exist by production date and country, the hood label remains the definitive source of truth.
What to do if you need air-conditioning service
Always use a qualified automotive technician who knows which refrigerant your Encore uses. If the system is leaking or low on refrigerant, the technician will evacuate the system and recharge it with the correct refrigerant and oil, using equipment calibrated for that specific refrigerant.
Summary
The Buick Encore has used both R-134a and R-1234yf, depending on model year and region. The surest way to know which refrigerant your specific vehicle requires is to check the under-hood service label or the owner's manual, and to have service performed with the correct refrigerant and compatible equipment.