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@Cybertan    

Sharing what i know and learn so far, i try make it in point form to keep it simple:     contact 4 company: letscool amyth aircon rescue newway         my shortlist are simple: look at google bad review (or any other source) only, the  bad review date last posted how often bad review is posted materials       materials : letscool quote me : SWG22 amyth  quote me : SWG22 aircon rescue  quote me : SWG21 newway  quote me : SWG21   the price all 4 are less then $40 different     all other almost the same of 1/2inch, copper wire almost same core and number of wire etc..... there my shortlisted are aircon rescue  and newway as they quote me the correct materials     i choose newway based on google (or any other source) bad review feedback or lack of  (as explain)  aircon rescue no cause not much of any feedback from any source (it a new company)                 after the piping is 80% done, i go take picture . i take this drain pipe like very little insulation when he saw me take picture he redo (or maybe he already want to redo i dont know) but happy he did redo cause the next 3 to 4hr doing the piping from 3.30pm until 6.30 to 7pm++++++       more checking, so far so good after that strange redo       from here on, all is good, everything is good, dont even need to open mouth liao drain pipe no join connector but using heat to pipe and install with  insulation at blend area       video about layout(before drain pipe redo), vacuum and doing the soap test to check leak , installer auto use soap to check for leak on their own unlike my first installer who dont even vacuum and do the soap test   video link: https://imgur.com/7fYCGkg https://i.imgur.com/7fYCGkg.mp4       last step, they even add rubber on the condenser leg, (this is not needed at all, some may first it a cons if the rubber wear out) i feel adding it, doing the soap test show their professionalism        

@ManOfTheHour

@Cybertan