Air Conditioning R1234yf & R134a

We at
Car Electrical can carry out services, 
repairs & fault diagnostics, 
with air conditioning re-gases & 
UV Dye leak checks starting from only £50
R134a & R1234yf Services Available



Does Your Vehicle Due A Car Air Conditioning Recharge?

It becomes necessary for car air conditioning recharge over time, as the system can lose up to 15% of its coolant each year. Thinking of it in those terms, one can see how even a relatively young vehicle could lose almost all of its coolant within a period of only a few years. This loss could have very negative repercussions if left unaddressed – not least on the performance of the system – and could lead to damage of the component parts concerned. Therefore, a regular top-up to the coolant system is entirely necessary as this will not only reduce general wear and tear on system parts but also assist in avoiding potentially much larger repair bills.

Regassing car air conditioning

As has been mentioned before, a car needs a specific amount of refrigerant present in the air conditioning system in order to operate efficiently, which will vary from vehicle to vehicle. This is where regassing car air conditioning comes into play. Strictly speaking, rather than topping up existing levels of coolant, the correct procedure is to remove all residual levels of this entirely from the system using a deep vacuum to evacuate this altogether. This is achieved by forcing such low pressures within the system that any moisture present will simply boil away at ambient temperature, then being drawn away by the vacuum pump.

When should I think about car air con recharge?

As a purely general guide (as stated above the required levels of coolant vary from vehicle to vehicle) you should consider a recharge of the air conditioning system when your vehicle reaches approximately 4 years of age, with further recharges to follow at 3-yearly intervals thereafter. It certainly makes more sense in the long run to keep in order a healthy system (not least because of the optimum levels of in-car comfort that will be maintained) rather than facing a potentially large repair bill because a system has been allowed to deplete and deteriorate over time.

Does Your Vehicle Need Car Air Conditioning Repair?

Although there are not that many components to the average car air conditioning system, there are still things that can go wrong with them. A list of the most common faults warranting repair is shown below, together with how they may be addressed:

Car air conditioning smell              

This is caused in the main by excessive bacteria being present on the air conditioning evaporator and inside the plastic casing usually surrounding it. The degree of smell can range from a mild odour to something really quite pungent. So, how can you rid your vehicle of these odour-causing bacteria? Well, it is often the case that a recharge of the system will do the trick, however, should this not prove effective, it may be necessary to disinfect the system entirely. This can be achieved either on a DIY basis using a commercially available disinfectant aerosol spray, or through professional cleaning using an ultrasonic piezo device.

Car air con leak

There are various methods that can be employed in detecting leaks in the air conditioning system. A special dye can be introduced into this, an electronic leak detector can be used, or even plain water with a foaming detergent can be added (for this the air con must be running and the water added to suspect hose joints). Most repairs to leaks involve the replacement of O-rings, seals or hoses. However, if the leak is present in the evaporator or condenser the repair could prove expensive.

Other car air con problems

Some other things that can go wrong are as follows, although this is not an exhaustive list:
Faulty switches, bad fuses, broken wires, broken fan belt (which will prevent the pump from turning) or a failure of the seal inside the compressor.