Why is the car air conditioning blowing air but not cold?
2 Answers
Car air conditioning blows air but not cold because it lacks refrigerant. Below is relevant information about vehicle air conditioning: 1. Concept: Vehicle air conditioning consists of a compressor, condenser, throttle element, evaporator, fan, and necessary control components, forming an air conditioning system that regulates interior temperature and humidity to provide a comfortable environment for passengers. The refrigerant continuously circulates within the system, with each cycle including four processes: compression, condensation, throttling, and evaporation. 2. Working principle: When the compressor operates, it draws in low-temperature, low-pressure gaseous refrigerant from the evaporator. After compression, the refrigerant's temperature and pressure increase, and it is sent to the condenser.
I also encountered the issue of air blowing out but not being cold from the AC some time ago, which was really uncomfortable. The most likely causes are insufficient refrigerant or a leak, or the compressor not initiating the cooling cycle, resulting in just room-temperature air being blown out. If the condenser is dirty or clogged, leading to poor heat dissipation, the system may also fail to work. For a quick check, you can look under the car for any oil leaks and listen for any unusual clicking sounds when the compressor is running. Blown fuses are common in electrical faults and can be easily checked with a multimeter. Last year, my issue was a stuck fan, which was resolved after cleaning out the debris. I recommend a full inspection before the hot weather hits, replacing any old parts to avoid suffering on the road under the scorching sun. Regular maintenance can prevent these troubles; a professional service doesn’t cost much but saves a lot of hassle. Don’t tough it out while driving—comfort is important.
