Maxicon Car Aircon Shop offers great service. They have friendly and honest mechanics to serve you. I just had my car serviced in this shop last Friday (Feb 14, 2013) for compressor replacement and aircon system cleaning because I was experiencing a whirring sound with high rpm while the aircon is on. Lucky me, their compressors were on-sale that time.

The only setback is that it's quite far from the heart of metro manila (the shop is situated in bf paranaque).