Where to Add Refrigerant Oil for Car Air Conditioning?
3 Answers
Car air conditioning systems are generally charged from the low-pressure side. Here is some relevant information about car air conditioning: 1. Introduction: The car air conditioning device (air-conditioning-device), commonly referred to as car AC, is used to regulate and control the temperature, humidity, air cleanliness, and airflow inside the vehicle cabin to optimal conditions. It typically includes a refrigeration unit, heating unit, and ventilation system. This integrated system makes efficient use of the limited space inside the car, featuring a simple structure and ease of operation, making it a popular modern car air conditioning system internationally. 2. Maintenance methods for car air conditioning: Conduct a comprehensive inspection of the AC system. When using the air conditioning for the first time in summer, check the system thoroughly, such as inspecting the refrigerant level via the liquid storage tank, checking if the AC filter is too dirty, and whether there are any foreign objects in the radiator. Pay attention to cleaning the air conditioning system. The AC filter should be replaced regularly, and the condenser should also be cleaned periodically. After parking, do not turn off the air conditioning immediately. Drivers should turn off the cooling a few minutes before reaching the destination and switch to natural air to allow the temperature inside the AC ducts to rise, eliminating the temperature difference with the outside environment. This helps maintain relative dryness in the AC system, preventing mold growth.
I've loved playing with cars since I was a kid and had a few experiences tinkering with the AC system myself. That time when the AC wasn't cooling, I thought it might be low on refrigerant oil and decided to top it up. After checking some materials, I found that refrigerant oil is actually injected through the high-pressure port, usually located on the compressor or AC manifold, requiring professional filling tools and pressure gauges. I gave it a try myself, but didn't tighten the connection properly, causing both the refrigerant oil and refrigerant to leak. Air got into the system and nearly ruined the compressor. It ended up costing me much more to fix it later. Now I've learned that car AC systems are highly precise, and mishandling high-pressure components carries significant risks. It's best to get regular maintenance at professional shops—they ensure proper refilling and avoid such troubles. Regular filter checks are also crucial, as clogs can affect performance.
As an average car owner, I noticed the AC wasn't cooling well after long-term use and suspected it needed refrigerant. I searched online for how to recharge it and learned about operating at the low-pressure or high-pressure ports near the compressor in the engine bay. I bought a set of tools to try it myself, but found it too complicated—couldn't understand the pressure gauge and worried about leaks damaging the car. After struggling unsuccessfully, I went to a repair shop where they fixed it quickly. They explained that professional equipment is essential to avoid system imbalance and higher costs, advising against DIY attempts. They also recommended checking AC hoses for wear during parking to prevent issues.
