The short answer: this Hyundai Santa Fe (2015) uses R-134a refrigerant.
Detail: In 2015, Hyundai equipped the Santa Fe with a conventional air conditioning system that relies on R-134a (HFC-134a) and PAG oil. The newer R-1234yf refrigerant appears in some later models, but your 2015 Santa Fe uses 134a. When servicing, always use the correct refrigerant and oil, and avoid mixing refrigerants to prevent damage to the compressor and seals.
Refrigerant type and oil specifics for the 2015 Santa Fe
Understanding what the system requires helps ensure proper operation and compliance with environmental regulations. The Santa Fe’s A/C system is designed for R-134a and PAG oil; service labels under the hood typically confirm this specification. Using the wrong refrigerant or lubricant can lead to poor cooling performance or component failure.
Key servicing considerations
Before performing any recharge or repair, consider these notes to avoid costly mistakes:
- Refrigerant type: R-134a (HFC-134a).
- Lubricant: PAG oil (commonly PAG-46 for 134a systems).
- Charge capacity: roughly 26–32 ounces (0.74–0.95 kilograms) for many Santa Fe configurations; exact capacity varies by engine and equipment—check the service manual or the under-hood label for the specific figure.
- Do not mix refrigerants: avoid introducing R-1234yf or mixing different refrigerants in the same system.
- Service approach: evacuate the system with proper recovery equipment, verify there are no leaks, and recharge using a precise scale under the guidance of a certified technician.
Before the list: Important details to know when servicing this system include the exact refrigerant type, the required oil, and the estimated charge capacity.
In short, the 2015 Hyundai Santa Fe relies on R-134a refrigerant with PAG oil, and any servicing should follow the exact capacity and procedure specified in Hyundai’s documentation or by a qualified automotive technician.
Summary
The 2015 Hyundai Santa Fe uses R-134a refrigerant, not R-1234yf. Use PAG oil, confirm the exact capacity from the service manual or under-hood sticker, and have a certified technician perform evacuations and recharges to ensure proper cooling and system longevity.


