The answer depends on the Civic’s model year. Older Civics typically use R-134a, while most newer Civics use the low-GWP R-1234yf refrigerant. Always verify with the under-hood label or the owner's manual.
How to determine your Civic’s refrigerant
To ensure you use the correct refrigerant and avoid damage to the A/C system, start with the vehicle’s official specifications. The following steps help you confirm the exact type for your specific car.
- Check the under-hood A/C label: look for a line that states the refrigerant type (for example, “R-134a” or “R-1234yf”). The label is usually on the radiator support, condenser shroud, or near the hood latch.
- Consult the owner's manual or a service manual: the air conditioning section lists the required refrigerant for your model year.
- Review service history or recharge receipts: previous shops often indicate which refrigerant was used.
- Ask a Honda dealership or a certified mechanic with your VIN: they can pull the exact specification from the vehicle’s build data.
Using the correct refrigerant is essential for proper cooling performance and for protecting the compressor and lubrication system. Using the wrong type or mixing refrigerants can lead to reduced cooling efficiency or component damage.
General guidance by era
Most Honda Civics built before roughly 2013 used R-134a. From around 2013 onward, many Civics transitioned to the low-GWP R-1234yf. Market and model-year variations exist, so verification is essential.
Maintenance and safety considerations
R-1234yf is mildly flammable (classified as A2L), so servicing requires proper equipment, training, and adherence to safety guidelines. For this reason, refrigerant service should be performed by a qualified technician who can handle the specific refrigerant and oil type used in your Civic.
Summary
In short, the Honda Civic’s refrigerant type depends on the model year and market. Use the under-hood label or the owner’s manual to confirm, and rely on a trained technician if you’re unsure. The industry shift from R-134a to R-1234yf reflects environmental regulations and a move to lower global warming potential refrigerants.
Does my car use R-134a or R-1234yf?
Cars built mid-1990s to roughly 2014–2017 almost always use R134a. Most 2017–present vehicles, especially Euro, hybrid and EV models, use R-1234yf. Some EVs use specialised refrigerant blends depending on the cooling system. Your car has a sticker under the bonnet that confirms its exact gas type.
Can I refill my car AC refrigerant myself?
It used to be that only professionals could recharge an AC system, but there are now kits available to do it on your own. What you'll need is: AC recharge kit with refrigerant (R-134a or R-1234yf, depending on your vehicle) Safety gloves and goggles.
Does Honda use 1234yf?
The 2016 Pilot, Civic, and Fit EV are using R-1234yf. As new models are redesigned or introduced, they will have R-1234yf with POE oil. The POE oil that is required for these systems on Honda/Acura vehicles is not the same oil that is required for high-voltage vehicles (HV).
What kind of Freon does the Honda Civic AC use?
HFO-1234yf
So, to wrap things up, the correct refrigerant type for your 2017 Honda Civic is HFO-1234yf. Using the right refrigerant is crucial for maintaining the performance and longevity of your AC system, as well as for protecting the environment.