Air Conditioning

Looking for a quick and cheap re-gas? Think again...

A quick fix from a can! People offering a quick and cheap re-gas, or re-charge, usually have no training or qualifications in car air conditioning. They also have no way of telling what amount of refrigerant (if any) is in the system, or indeed whether there is leak. They simply connect a can of refrigerant, open the valve and squirt some in.

A cheap re-gas will leave moisture in the system, often creates air bubbles which are also injected into the system and can also result in too much refrigerant and not enough lubricant (oil). Moisture is an A/C system killer: unless it is removed it will cause component failure as well as causing the A/C system to perform poorly.

A cheap re-gas is a total waste of your time and money, can easily damage your car’s A/C system & can release refrigerant into the environment (releasing CFCs into the atmosphere is also illegal and carries a heavy fine or jail). Pay just once and get it done properly!

A/C systems must be fully degassed of any refrigerant as there is no way of telling how many grams of refrigerant are left (all systems suffer from natural seepage). Each A/C system requires a specific amount of refrigerant, and these levels range from 400gm to 1500gm. The A/C system has to be vacuum-checked for leaks and to remove all air and moisture. The vacuum test runs for 30 to 40 minutes to check for vapour or larger leaks.
When the system is recharged the correct amount of refrigerant, the correct type & amount of oil and an Ultra Violet Dye is put into the system.

Oil is the lubricant that keeps the A/C system running smoothly. It is carried around the system with the refrigerant and is also lost when the refrigerant level drops: a simple re-gas does not replace lost oil – imagine running your car with no oil!

We add an Ultra Violet Dye to save you money in the future! Should your system develop a leak we can quickly and easily find the leak with an ultra-violet light and replace just the faulty parts.

 

Air Conditioning Services by RAC

Basic principal


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The System

The Air Conditioning system is a closed system, consisting of two sections. The section that produces the cooling effect (Low pressure) runs from the expansion valve (3) as a liquid, through the evaporator (4) then back through the expansion valve (3) as a vapour.

The Compressor & Condenser

The vapour from the expansion valve (3) travels to the compressor (2) compressing the vapour condenses it into a heated liquid (High pressure). The liquid then moves to the condenser (1) where it is cooled.

The Drier

The function of the drier (5) is to remove any air bubbles or impurities from the refrigerant. It protects the whole system for damage caused by contamination.

The Evaporator & Expansion valve

The evaporator (4) is basically the same as the condenser: A large surface works as a heat exchanger similar to a radiator. The expansion valve (3) relieves the liquid refrigerant into the evaporator. Due to the expansion the refrigerant changes from liquid back to gaseous. The process of evaporation demands a lot of heat, which is absorbed from the car's interior. If the refrigerant passed the evaporator it flows back to the compressor. This is called the low-pressured side.

Package 1 System Check £34

Visual and functionality check of:

  • AC Switch and recirculation switch operation
  • Heater and controls
  • Evaporator unit for obnoxious odours
  • Compressor engagement (& noise Level)
  • Compressor belt condition
  • Pipe work & condenser for damage and obstructions
  • Condenser fan operation
  • Temperature at air vents Cabin filter condition

Carry out:

AC System pressure test.

If any faults are found an AC Service or Service Plus may be required.

Package 2 – Service (Recharge) £64

All of Package 1 plus:

  • Removal of refrigerant from the AC System
  • Vacuum test and recharge of AC System with the correct amount of R134a Refrigerant and oil

If the system is low on refrigerant a UV Dye Leak Test will be carried out.

Package 3 – Service Plus £134

All of Packages 1 & 2 plus:

  • Replacement of receiver drier if necessary
  • Replacement of cabin filter if necessary
  • Any other additional work required
  • Injection of UV Dye and Leak Test
  • Carry anti bacterial treatment

Nitrogen Leak Detection - £45

Airco-Clean Odour/Bacteria Removal Treatment - £30

  • Fast and efficient
  • Deodorises and refreshes
  • Eliminates pollen and nicotine

Price as stated plus parts and VAT – subject to vehicle make and model.