Automobile · January 11, 2024

Best Place For Car Air Conditioning in Darlington

Car air conditioning system is a game changer when it comes to travel in extremely hot and humid climates. We all love the chill blasting from the car’s vents during summer trips, the whole traveling becomes easy and relish. However, believe it or not, no car is equipped with ice machines. 

The cold air that we get from the AC vents is converted from the hot air. The hot air has to go through multiple processes of cooling to convert into cool air.

The air conditioning system works by refrigerant gas and uses a compressor to cool the air in the cabin of your car. The compressor is attached to an evaporator which reduces the temperature of air as it passes through. 

The cooled air goes through the vents in your car cabin. As you turn off your car’s engine, the refrigerant gas stops flowing automatically and your car cabin will warm again in a few seconds. 

Components of a Car AC System

Your car air conditioning system has a few components that help to reduce the temperature inside of your car-


  • It is a power unit of the system that divides the low-pressure side from the high-pressure side.
  • It takes in low-pressure gas and compresses it into high-temperature.
  • Attached to the front of the engine and moved by a serpentine belt.


  • It reduces the temperature of refrigerant while maintaining high pressure.
  • Refrigerant changes from a gaseous state to a liquid state as it cools.
  • It uses forced air from a fan or vehicle movement to transfer heat.
  • Attached in front of the vehicle, behind the grill.


  • It removes water from the refrigerant using a drying agent.
  • Use system-filtering properties.
  • Attached on the high-pressure side of the system, between the metering device and the condenser.

Metering Device

  • It has either the expansion valve or fixed orifice tube
  • Ir lowers refrigerant pressure, which reduces refrigerant temperature.
  • The refrigerant is still in liquid form after leaving the metering device.
  • Attached on the high-pressure side of the system, between the dryer and firewall.


  • In the evaporator the refrigerant changes back to a gaseous state which creates a cooling effect.
  • The car cabin air is cooled and dried as it blows across the evaporator.
  • Only component attached inside the passenger compartment, behind the dashboard.

Types of Air Conditioning Systems in Cars

There are two types of air conditioning systems in cars- 

1. The Expansion Valve System:

It is the most common type of car air conditioning system you will see in the market. It uses an expansion valve to maintain the flow of refrigerant to the evaporator. 

The expansion valve is responsible for the constant rate of cooling released by the refrigerant, which helps to maintain the temperature of the car cabin.

Advantages of the Expansion Valve System:

  • Cool the cabin in less time
  • A more precise temperature control option
  • Longer lifespan of the compressor

Disadvantages of the Expansion Valve System:

  • Expensive than the fixed orifice tube system.
  • Require more maintenance.

2. The Fixed Orifice Tube System:

It is a simpler type of car conditioning system that uses a fixed orifice tube to maintain the flow of refrigerant to the evaporator. It restricts the flow of refrigerant, which helps to maintain the temperature of the car cabin.

Advantages of the Fixed Orifice Tube System:

  • Affordable than the expansion valve system
  • Requires less maintenance

Disadvantages of the Fixed Orifice Tube System:

  • Takes time to cool the car cabin
  • Less option for precise temperature control
  • Short lifespan of the compressor.

Importance of Car Air Conditioning Service 

Your car air conditioning service is important to maintain the health of your car system. You should service your car’s air conditioning every 30,000 miles or two years to avoid any major damage to the air conditioning system. Annually 15% of the refrigerant gas will be lost, so it is important to refill it during the servicing. 

If you are not maintaining a regular schedule for car air conditioning service it can cause several problems apart from driving your car without AC. Your AC system will work properly if you skip the servicing but in the long term, irreversible damages can occur to your air conditioning system.

Symptoms of Low Air-con Refrigerant Level

We understand that it is difficult for car owners to check whether their car air conditioning system works properly or not. Therefore, we give you some symptoms you should look for to detect whether your car needs air conditioning service:

  • Notice visible signs of liquid leakage.
  • Burn more fuel the usual.
  • Takes longer to cool the cabin temperature than usual.
  • Hot air blowing out through vents.
  • Require a higher blower speed than usual to reach optimal temperature.
  • Damaged compressor


As part of our car servicing in the Darlington service center, we carry out a thorough inspection of your car’s air conditioning system and will inform you whether your car needs air con recharge. 

If you are looking for the best place to service your Car Air Conditioning Darlington then you can contact us and schedule your appointment at any time.