Car Air Conditioning FAQS
Ultimate Automotive are well placed to take care of all of your Car Air Conditioning Re-gas, Inspection, Repairs or Servicing needs
You should send your vehicle to a reputable workshop such as Ultimate Automotive on a regular basis to ensure the air conditioner system continues performing at its best as well as having the mechanics check out the condition of the entire car.
Repco Authorised Service mechanics perform a 65 point Vehicle Inspection with every service and are often able to warn you about any items that may need renewal in the near future or those that are already worn beyond repair.
Ultimate Automotive can arrange automotive air conditioning service with a licenced technician in and around Gympie and the surrounding areas.
Air Conditioning FAQ's
How does a car air conditioner get rid of heat from a vehicle?
A car air conditioning system can be classified into four basic parts - the compressor, a belt driven pump to compress and circulate gas, a radiator like unit known as a condenser to redistribute heat and condense gas to a liquid, an expansion device, which could be a thermal expansion valve (TXV) or an orifice tube (dependent on the kind of air conditioner 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 conditioning is designed to remove the heat from the air within the inside of the car and transfer it to the exterior, leaving only cooled or 'conditioned' air 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 does a car air conditioner service usually consist of?
A typical air conditioner service may include some of the following items;
Validate that air vent temperature is correct
- Test condenser temperature
- Confirm suction line temperature correct
- Corrections of pulley and drive belt
- Confirm that valves and thermostats are operating correctly
- Cleaning the fins of the condenser
- Assess condition of components and hoses
- Evacuation and recharge of refrigerant (where required)
- Test system lines and components for leaks with an electronic leak detector
Why do I need a car air conditioner system service?
Compressor Seizure can be prevented by checking or changing the oil level in the refrigerant. If the air filters become clogged with dirt and bacteria it will affect the performance of the entire system and it can even cause it to break down altogether. As well as degrading air conditioner performance, dirty air filters can cause all kinds of health problems too.
Your air conditioner ought to be examined once a year for any signs of breakdown of the hoses, connections and seals to make sure refrigerant levels are being maintained over time. Regularly servicing your car air conditioner 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 reduces the amount of fuel being burned.
Why does the car air conditioner need to be serviced?
An automotive air conditioning is designed to remove the heat from the air within the inside of the car to the exterior, leaving only cooled or 'conditioned' air 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 elements and very extreme operating conditions and being operated intermittently rather than being 'Always On' can cause failure of the connections, hoses and seals. Your automotive air conditioner 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.
Ultimate Automotive 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 the source of the bad smell in car air conditioning?
The evaporator core can become a breeding ground for microbes, bacteria and even fungus due to the damp environment. This can lead to nasty smells and possibly even be bad for the health of any vehicle occupants. Although 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.
Ultimate Automotive mechanics have the capability to use specialised ultrasonic technology to destroy any micro-organisms that may be the source of unpleasant smells or health concerns.
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.