How to drain out A/C Freon?

joec wrx · 05-20-2009, 09:26 PM

How do I drain out the freon? I filled up my a/c with a can of R-134 from Kragen and I think I may have put too much. The kit I bought did not come with a pressure gauge, so I had to wing it. It squeals really loud when the a/c is on.

Thanks in advance!

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Mulder · 05-20-2009, 09:30 PM

You really can't do this yourself safely. The refrigerant is under pressure and if it contacts your skin or gets in your eyes, it can cause instant frostbite or blindness.
A shop will have the proper equipment to safely discharge the system, recharge it to the right amount, and check it for leaks.
AC work is not something you can "wing" or DIY unless you have the proper qualifications and tools.

joec wrx · 05-20-2009, 10:39 PM

I was hoping to save myself money by doing it myself. The loud squeal is leading me to believe:

1. Overfilled the freon
2. AC Belt loose
3. AC compressor bad

#2 is ruled out as I tightened the belt and the sound is still there. I guess there is no way around this.. my wallet is gonna hate me for it but it's off to the shop.

crampfan · 05-21-2009, 11:46 AM

I still can't figure out why a shop/tech has to be a/c certified to buy refrigerant, but a individual does not. our government at work I guess.

rick-l · 05-21-2009, 12:19 PM

Quote:

Originally Posted by crampfan

I still can't figure out why a shop/tech has to be a/c certified to buy refrigerant, but a individual does not. our government at work I guess.

You don't have to be certified to buy R-134 just EPA 609 certified for R-12.

You can be certifed for the Exam cost of $19.95. You can pass the test if you remember you are not supposed to vent refrigerant to the atmosphere.

05-20-2009, 09:26 PM	#1
joec wrx Scooby Newbie Member#: 112359 Join Date: Apr 2006 Chapter/Region: BAIC Location: Central Valley,CA Vehicle: 14 Challenger RT	How to drain out A/C Freon? How do I drain out the freon? I filled up my a/c with a can of R-134 from Kragen and I think I may have put too much. The kit I bought did not come with a pressure gauge, so I had to wing it. It squeals really loud when the a/c is on. Thanks in advance! * Registered users of the site do not see these ads.

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05-20-2009, 09:30 PM	#2
Mulder Trust no one Moderator Member#: 11170 Join Date: Oct 2001 Chapter/Region: Tri-State Location: NYC Vehicle: 02 RAV4 MT 15 WRX/11 CRZ	You really can't do this yourself safely. The refrigerant is under pressure and if it contacts your skin or gets in your eyes, it can cause instant frostbite or blindness. A shop will have the proper equipment to safely discharge the system, recharge it to the right amount, and check it for leaks. AC work is not something you can "wing" or DIY unless you have the proper qualifications and tools.

05-20-2009, 10:39 PM	#3
joec wrx Scooby Newbie Member#: 112359 Join Date: Apr 2006 Chapter/Region: BAIC Location: Central Valley,CA Vehicle: 14 Challenger RT	I was hoping to save myself money by doing it myself. The loud squeal is leading me to believe: 1. Overfilled the freon 2. AC Belt loose 3. AC compressor bad #2 is ruled out as I tightened the belt and the sound is still there. I guess there is no way around this.. my wallet is gonna hate me for it but it's off to the shop.

05-21-2009, 11:46 AM	#4
crampfan Scooby Specialist Member#: 74321 Join Date: Nov 2004 Chapter/Region: MWSOC Location: clarksville AR Vehicle: 2004 wrx wag black UTEC stg 4	I still can't figure out why a shop/tech has to be a/c certified to buy refrigerant, but a individual does not. our government at work I guess.