Alternatively, do the air purging by using vacuum pump when installing the aircond, air and moisture in the pipe will reduce the performance of compressor, overheating and eventually refrigerant leak.

Air purging is important for a proper aircon installation, but sadly not many installer will follow the proper procedure.

I almost forgot, don't wast the money to ask the service guy to re-fill the gas without prior vacuum the pipe-line, the moisture accumulated in the system must be removed.

This post has been edited by Lushtree: Nov 2 2012, 04:04 PM