【Air Conditioner Maintenance for Imported Cars | Compatible with New Refrigerant HFO-1234yf and R134a】

When using your air conditioner, have you ever felt that it “doesn’t cool as well as before” or that “air comes out, but the performance seems weak”?

On some recent imported cars or newer vehicles, instead of the conventional R134a, a newer refrigerant called HFO-1234yf (R1234yf) may be used. It can be difficult to determine just by appearance, and there are also cases where owners continue driving without knowing which refrigerant is used.

At LOGON, we use an air-conditioning refrigerant maintenance device “PS134 Dual specification” that supports both R134a and R1234yf. We switch the equipment according to the type of refrigerant, and perform recovery, recycling, and charging of the air-conditioning gas.

It’s not just a matter of swapping the A/C gas

Over time, the A/C gas may gradually decrease, or moisture and impurities may mix into the system.

The PS134 is equipped with patented technology that purifies recovered gas up to 99.99%. The process is designed not to simply top up old gas, but to recover it first, restore its condition, and then return the required amount accurately.

Especially since R1234yf is an expensive refrigerant, the ability to avoid using more gas than necessary and to work with a focus on precision is a major advantage.

Regular maintenance is important not only to help stabilize cooling performance, but also to consider the burden placed on the air-conditioning system—such as the compressor.

Support for R134a / R1234yf according to the vehicle

The PS134 Dual specification supports the following two types of refrigerant:

• R134a
• HFO-1234yf (R1234yf)

Because it switches and manages the refrigerant inside the unit, the setup is designed to prevent different refrigerants from mixing. Although the pressure display uses an analog meter, the internal operation is controlled digitally, aiming to balance ease of confirmation with work accuracy.

However, the refrigerant used and the charging amount differ depending on the make/model and model year. When you make a request, we will confirm your vehicle information and then inform you whether we can handle it.

LOGON performs work while checking your vehicle’s condition

The reason an air conditioner doesn’t cool well isn’t always just the amount of gas. Depending on the condition of the air-conditioning system or whether there is a refrigerant leak, the symptoms may not improve even after charging.

Therefore, rather than simply adding gas, we proceed with the work while checking the vehicle’s condition. If you’re concerned about the air conditioner’s performance or if you’ve never had air-conditioning refrigerant maintenance before, please feel free to consult us.

We will review the necessary maintenance content together according to the vehicle type, the refrigerant used, and the vehicle’s condition.

■ Main Details / Service Information

【Compatible Vehicles】
Imported cars (excluding special-purpose vehicles)

【Compatible Refrigerants】
R134a
HFO-1234yf (R1234yf)

【Equipment Used】
PS134 Dual specification

【Work Contents】
Recovery, recycling, and charging of A/C gas
Purification of refrigerant
Charging of gas and oil after confirming the required amount

【Equipment Features】
Switchable support for R134a / R1234yf
Patented technology to purify gas up to 99.99%
Analog meter display
Digital control
Configuration designed to prevent refrigerant contamination

※ Depending on the vehicle type and condition, the service scope may differ. If other causes—such as sensors or hoses—are suspected, improvement may not be achieved with air-conditioning refrigerant maintenance alone.