They’re different refrigerants designed for different automotive A/C systems. Using the one specified for your vehicle is important for performance and safety.

• Compatibility: R-1234yf and R-134a aren’t interchangeable. Systems are engineered for one or the other.
• Fittings: Service ports and quick couplers are different to help prevent mixups.
• Oils & equipment: Charge hoses, gauges, and oils are formulated to match the refrigerant type.

To confirm what your car needs, check the under-hood label or your owner’s manual. On Walmart.com, you’ll find R-1234yf-specific refrigerant cans, recharge kits with gauges, oils, dyes, and quick couplers—just match accessories to the refrigerant listed for your vehicle.

Costs can vary, and several factors tend to make R-1234yf pricier than older refrigerants.

• Specialized production: It’s a newer formulation with more limited manufacturing and distribution.
• Packaging and hardware: Many cans are self-sealing and require compatible taps and couplers.
• Service tools: Charging hoses, gauges, and recovery equipment are specific to R-1234yf systems.
• System design: Newer systems and precise fill requirements can influence how much you buy.

To manage spend, consider buying only what you need (single cans vs. multi-packs), addressing leaks before recharging, and checking product details to ensure compatibility. Availability and seasonal demand can also influence what you see online.

If you choose to DIY, follow product instructions carefully and consider safety first.

• Confirm the refrigerant: Check the under-hood label to verify your vehicle uses R-1234yf.
• Use the right kit: A recharge kit with an R-1234yf low-side coupler, hose, and gauge can help you monitor the process.
• Work safely: Wear eye protection and gloves, use a well-ventilated area, and keep away from heat or open flames.
• Go slowly: Add small amounts, watch gauge readings, and avoid overfilling.

If you suspect a significant leak, aren’t comfortable with the steps, or local regulations limit DIY servicing, seeking a professional service may be advisable.

There’s no single amount that fits all vehicles. The exact charge is listed on your under-hood label (in ounces or grams) and in the owner’s manual.

• Check the label: Follow the specified capacity for your year, make, and model.
• Know your can size: Many R-1234yf cans sold online are around 8–12 oz, so you may need more than one depending on your vehicle’s requirement.
• Monitor as you add: Use a gauge kit to avoid overcharging, which can reduce cooling.

If the system is empty or you’re unsure of the correct fill procedure, a professional evacuation and recharge can help achieve the specified amount more precisely.

Choose accessories that explicitly state R-1234yf compatibility to avoid fit or function issues.

• Charging hose & coupler: A low-side hose with an R-1234yf quick coupler is essential for connecting to the service port.
• Gauge: Analog or digital gauges help track low-side pressure during charging.
• Can tap: Many R-1234yf cans are self-sealing; make sure your tap matches the can type.
• Oils & dyes: Look for R-1234yf-compatible oils and UV dyes when service work calls for them.

Verify compatibility on the product page and your vehicle’s service information. Avoid mixing tools or adapters meant for other refrigerants unless the manufacturer clearly approves their use.