Car Air Conditioning FAQS
Rokeby Service Centre are well placed to take care of all of your Car Air Conditioning Re-gas, Inspection, Repairs or Servicing needs
Your vehicle should be taken to a reputable workshop such as Rokeby Service Centre on a regular basis to make sure the air conditioning system continues performing in optimum conditon as well as having the mechanics go over the condition of the whole vehicle.
Repco Authorised Service mechanics perform a 65 point Vehicle Inspection with every service and provide a heads up about any items that may need renewing in the near future or those that are already worn beyond repair.
Rokeby Service Centre can arrange automotive air conditioning service with a licenced technician in and around Rokeby and the surrounding areas.
Air Conditioning FAQ's
How does a car air conditioner work so efficiently?
A car air conditioning system can be broken down to four basic parts - the compressor, a belt driven pump to compress and circulate gas, the condenser to release heat and condense gas to a liquid, an expansion device, usually a thermal expansion valve (TXV) or an orifice tube (subject to the sort of a/c system used). Systems using orifice tubes also have an accumulator before the compressor to remove moisture from the refrigerant while TXV systems have a receiver-dryer before the evaporator to perform the same crucial task. Both the accumulator and receiver-drier are also used to store refrigerant.
An automotive air conditioner system is designed to remove the excess heat from the air in the inside of the vehicle and transfer it out of the vehicle, leaving only cooled or 'conditioned' air behind to be recirculated. Hot air is passed across a gas filled evaporator, where the heat is easily absorbed by the refrigerant (in gas form), effectively removing the heat from the air in the car.
The now heated gas is pulled through the compressor where it is further heated (via compression). The next stage involves the refrigerant being forced through the condenser to quickly extract the heat from the refrigerant. The refrigerant, now condensed to a liquid, then moves through the expansion device (either a TXV or Orifice tube), which regulates the flow of refrigerant going to the evaporator, changing the high-pressure liquid to a low-pressure mist (gas). A fan blowing over the cold fins of the evaporator produces the cold air being blown into the car and the entire process then begins all over again.
What makes up a car air conditioner service?
A typical air conditioner service may include some of the following items;
Check air vent temperature is correct
- Condenser temperature assessment
- Test suction line temperature
- Corrections of drive belt and pulley
- Confirm correct operation of thermostats and valves
- Condenser fins cleaned
- Inspect condition of components and hoses
- Evacuation and recharge of refrigerant (where required)
- Use electronic leak detector to check system lines and components for leaks
Why do I need a car air conditioner system service?
By checking or changing the oil level in the refrigerant you protect the compressor and avoid it seizing up. When the air filters become jammed with dirt and bacteria it will affect the performance of the entire system and it can even cause it to quit altogether. As well as inhibiting air conditioner efficiency, dirty air filters can cause all kinds of health problems too.
A car air conditioner needs to be checked for problems annually for any signs of breakdown in the seals, hoses and connections to ensure there is no loss of refrigerant over time. Regular service of your automotive air con keeps refrigerant at optimum levels meaning the system does not need to work as hard and this in turn protects the system from damage and minimises fuel consumed.
Why does the car air conditioner need to be serviced?
An automotive air conditioner system is designed to remove the excess heat from the air in the inside of the vehicle out of the vehicle, leaving only cooled or 'conditioned' air behind to be recirculated. This is achieved using a special compound called refrigerant, capable of readily absorbing heat as a gas and quickly losing heat as a liquid.
Being exposed to the mercy of the elements and very extreme operating temperatures and being operated occasionally rather than being 'Always On' can cause breakdown of the hoses, connections and seals. A car air conditioning system should be examined on a regular basis to ensure there are no problems or refrigerant loss due to failure or leakage from these points.
Simply by cooling the air in your car under normal running conditions, the filters of the air con get dirty and intermittent use can cause seals to dry and crack, allowing them to leak. Even without leaks, the gas in a car air conditioning system will eventually begin to degrade or evaporate over time and should be recharged where required to keep the air con system in peak running condition.
Can I service my own Air Conditioner?
Only qualified mechanics with the appropriate training should attempt to service a car air conditioner. Specific licences are required to be able to service or repair some types of car air conditioning systems, especially where regas (recharging of the refrigerant) is concerned. Strict guidelines and procedures must be adhered to when handling certain refrigerants, which must always be fully recovered and not allowed to escape into the atmosphere during servicing.
Refrigerant can also pose serious health risks if handled incorrectly. Specialist equipment is also required as the air conditioning system is under extreme pressure and must be pulled into a deep vacuum to remove any moisture, to avoid seriously damaging the system.
Rokeby Service Centre can arrange Air Conditioning Service with a Licenced Technician. You can find out more about licensing on the Australian Refrigeration Council (ARC) Website.
What is creating the bad smell in car air conditioning systems?
The damp environment inside the evaporator core can promote the development of microbes, bacteria and even fungus growth. This can lead to nasty smells and possibly even be bad for the health of any vehicle occupants. While modern evaporator units tend to be more efficient, the addition of extra fins leads to an increased ability to trap moisture, allowing micro-organism development.
Rokeby Service Centre mechanics have the capability to use specialist ultrasonic technology to get rid of any micro-organisms possibly causing any unpleasant odours or health issues.
Just ask about our MIST service, which will kill any bacteria that may be lurking in your car’s air system. These bacteria can cause odours and even make you sick, especially if you have allergies or asthma. A MIST service doesn’t just make your car smell better - it makes it healthier for you and your family.