The most common problem with your Car AC

A compressor powered by the engine, an expansion valve that controls the flow of refrigerant, and two heat exchangers, the evaporator and condenser, are just a few of the parts that make up the air conditioning system. As it circulates throughout the system, refrigerant is a liquid that may change into a gas and then back to a liquid state.

AC’s air is not cooling

A refrigerant leak is the most common reason for this problem. The components of your A/C largely rely on the cooling agent to chill the car. The other parts of an air conditioner won't work if there isn't enough refrigerant. A leak can happen at any moment, although it usually results from a broken hose, connector, compressor, condenser, or evaporator. Regrettably, refrigerant leaks are more challenging to locate than oil leaks. This is so that refrigerant may evaporate when it is exposed to the outside air.

Ac’s air is cool but not as per the expectation

Low refrigerant is typically to blame for this problem. The pressure in the system decreases when there is insufficient refrigerant, which prohibits the clutch from releasing and starting the compressor's cycle. Insufficient refrigerant in the system may also result from:

Blocked or malfunctioning Condenser

The condensation system is the component that removes heat from the refrigerant to return it to a liquid condition after it has been in a gaseous state. The air that exits the vents won't be chilly if the condenser is blocked or otherwise damaged.

Failed Clutch Switch

Without this part, the air compressor won't be able to work and won't be able to condense the refrigerant liquid into gas.

AC smells awkward

When you switch on your air conditioner, a foul mildew odor will fill your nose. This is caused by bacteria growing in the system. This is typical of older, hardly used, or regularly maxed out A/C units (owing to excess humidity in the unit) automobiles. On the evaporator, bacteria, mold, fungus, and other microorganisms might grow under the dashboard. A bad smell emanates from the vents as a result of this development. 

AC makes a rattling noise when it is switched on

Any time your automobile emits a noise that wasn't there before, it can be a clue that something is wrong. When in operation, air conditioners are often silent. It's reasonable to feel a little anxious about the problem when you switch on your air conditioner and hear rattling, pounding, or other strange sounds.

The cause of the strange noises might be something as basic as a leaf or other roadside debris obstructing the unit. Additionally, it can be a sign that a crucial component is malfunctioning. A worn-out bearing can cause the air conditioner to make a grinding or screeching noise. If the compressor makes a rattling noise, the clutch may have failed.

AC functions from cold to hot

When the air abruptly changes while you are driving from being pleasantly cold to excruciatingly hot, something is wrong. It's conceivable that the expansion mechanism that supplies the evaporator with the proper quantity of refrigerant has failed. If there is moisture present, a blocked expansion chamber will cause the valve to freeze since it will prevent the refrigerant from getting to the evaporator.

Water-Stained Floorboards

 Under your dashboard, in the A/C heating box, bacteria accumulate on the evaporator coil of the air conditioner. A slimy layer forms on the A/C fins, giving off a musty odor when bacteria from airflow combine with moisture from the coils. The film accumulates over time and has the potential to obstruct the drain pipe. The drain line, a rubber tube used to eliminate extra moisture, starts in the heater evaporator box and travels through the floor to the undercarriage. Once clogged, condensation-related water starts to accumulate in the heating box and starts to leak out, usually onto the passenger side of the car's floor.

A skilled automotive expert is able to correctly diagnose automobile AC problems and restore your air conditioning operation regardless of the symptoms your air conditioner may be showing.