I had my aircon serviced after loosing its cooling. Thinking it was the compressor (good thing it's not). The culprit was the hose with aluminum enclosure on both ends connecting to compressor and condenser (kinda) is already worn out.I also decided to replace the drier, expnasion valve and thermostat switch.Sa o-ring walang problema dahil mura lang ito. Mga 5 to 10 pesos lang. I got the drier for 460Php, expansion valve for 750php and thermostat switch for 150php.Cost me alot of money to have it repaired pero worth it naman dahil super lamig na ulit aircon ko.