aicon re-gassing. - mal
What causes the aircon unit in a car to need re-gassing? does it leak?. Am I mistakenly under the impression it works in a similar way to a domestic fridge, you never hear of those needing re-gassing.
aicon re-gassing. - R40
Have a look here:

www.aircool.biz/

The guy has good recommendations from people on here
aicon re-gassing. - jc2
The thermostat in a fridge probably turns the pump on 25 to 50 times a day.This keeps all the seals in the system lubricated plus the fridge doesn't go round corners,hit potholes and suffer other forms of vibration;the air-con in my car(2000 Escort)is still working[touch wood]probably because I use it regularly.It has never been serviced or re-gassed.
aicon re-gassing. - mjm
The compressor fitted to a car is a semi-hermetic type. It has an "open" shaft drive with a seal on the shaft. That is one possible leak spot. The compressor is fitted to a "moving" engine, the rest of the bits are fitted to a "static" bodyshell, hence flexible joints are needed. They can leak. Most of the rest of the joints on a car are mechanically made with flare type fittings, more possible leak points.

A domestic fridge has a hermetic compressor, all the moving bits are inside a welded shell. The pipes and electrical connections which pass through this shell are fixed at the factory and tested.
The rest of the system is brazed together at the point of manufacture, and can be tested. The number of actual pipe joints needed in a domestic fridge is kept to a minimum and should be far fewer than a car aircon system.

As jc2 says once the fridge has been delivered on the lorry and installed, it then has a nice static life.