Flushing A/C Evaporator

[Craig]

I am looking into flushing my Evaporator. If I do flush the evaporator do I have to remove the Expansion valve first? If so how hard is that process?

Topic

[cunno96]

why do you want to flush the evaporator is it not making cold air or air flow a bit slow why do you want to flush it

[Craig]

I am looking to flush the evaporator because i used to have r134a in the system and i am switching back to r12. The r134a doesnt cool the system as effectivley as it should. Any help you have would be great. 🙂

[cunno96]

i would have it hanging some where so it can drain out other than that i dont know what you can use to clean it out i know a mate that uses LPG in his ac and i dont think he cleaned the system befor adding LPG

just wondering is the condencer clogged with leaves coz that will affect the ac or what you could do is adjust the thermostat switch or change the switch to make it cooler by getting it to kick in for longer periods of time

[John B Kobberstad]

https://ericthecarguy.com/kunena/10-Repair-Central-The-How-To-Forum

[Ecovan150]

flush the condenser if is not clogged, and a new expansion or orifice we work good remember evacuation the system.. check leak… and charge

[Bill]

By the time you get a wrench to disconnect the second fitting all traces of the old refrigerant will boil off and be on it’s way to our atmosphere which is one reason we don’t use R12 anymore.

[derek]

YEA AND THE REASON WHY THE EPA FU**ED US ROYALLY WITH THE THREAT OF CONFISCATING EVERY OUNCE OF R-12 AND NOT INFORMING SERVICE STATIONS TO GIVE THE GOOD AND BAD SIDE OF CONVERSION TO R-134, THAT WE NOW KNOW DESTROYS R-12 COMPONANTS BECAUSE R-134 IS MUCH MORE DENSE AND REQUIRES EVERY PART OF THE SYSTEM TO WORK 10 TIMES HARDER….THIS TREE HUGGING BULL SHIT SHOULD NEVER HAVE HAPPENED AND R-12 SYSTEMS SHOULD HAVE BEEN LEFT ALONE! THERE WAS A REASON WHY THEY WORKED SINCE THE CONCEPT OF AIR CONDU WAS INTRODUCED 40 YEARS AGO !

[Matt Brandsema]

I really do not think this is a good idea at all. I cannot imagine why R12 would cool better than R134a. As long as the boiling point of the refrigerant is very cold, it doesn’t matter WHICH one you use. R12 is VERY expensive and hard to get.

[Author]

Replies