What are the reasons for a car's air conditioning making particularly loud noises?
2 Answers
The reasons for a car's air conditioning making particularly loud noises are: 1. The type of refrigerant added to the air conditioning system is different; 2. There is an issue with the tightness of the air conditioning compressor belt—if it's too loose, it can cause the air conditioning to be excessively loud; 3. Excessive refrigerant has been added to the air conditioning system, increasing the compressor's load and consequently the overall burden. The functions of a car's air conditioning system include: 1. Achieving a cooling effect through the continuous transformation and circulation of refrigerant; 2. Drawing fresh air from outside into the car for ventilation and air exchange, preventing window fogging; 3. Using the engine coolant, waste heat, or heat generated by a burner as a heat source for warming, which is then heated by the heater and blown into the car by the blower to raise the temperature for heating purposes; 4. Removing dust, odors, smoke, and toxic gases from the car's interior air to freshen it, and humidifying the car's air to increase its relative humidity.
As a veteran driver with over a decade of experience, hearing the AC roar like a tractor is all too common. The core issues usually boil down to three things: worn-out bearings in the compressor cause loud clunking; leaves stuck in the cooling fan make it scream; and aged drive belts wail like a broken accordion. Last year, my car's fan was clogged with poplar fluff—the moment I turned on the AC, the RPM shot up to 3500, drowning out the radio. A blast from a high-pressure washer cleared the radiator fins, restoring peace. A heads-up for you rookies: a condenser caked with bug remains can also force the electric fan into overdrive, so remember to clean those crevices every 20,000 km.
